U.S. Department of Commerce National Oceanic and Atmospheric Administration National Ocean Survey
DESCRIPTIVE REPORT
Type of Survey: Navigable Area
Registry Number: H12389
LOCALITY
State(s): Texas
General Locality: Galveston, TX
Sub-locality: Texas City, Galveston Channel and Offatts Bayou
2014
CHIEF OF PARTY
H12389 Dan Jacobs
LIBRARY & ARCHIVES
Date: U.S. DEPARTMENT OF COMMERCE REGISTRY NUMBER: NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION HYDROGRAPHIC TITLE SHEET H12389
INSTRUCTIONS: The Hydrographic Sheet should be accompanied by this form, filled in as completely as possible, when the sheet is forwarded to the Office.
State(s): Texas
General Locality: Galveston, TX
Sub-Locality: Texas City, Galveston Channel and Offatts Bayou
Scale: 10000
Dates of Survey: 05/20/2014 to 09/09/2014
Instructions Dated: 04/24/2014
Project Number: K414_NRT4_2014
Field Unit: Navigation Response Team 4
Chief of Party: Dan Jacobs
Soundings by: Multibeam Echo Sounder
Imagery by:
Verification by: Pacific Hydrographic Branch
Soundings Acquired in: meters at Mean Lower Low Water
Remarks: H12389 The purpose of this survey is to provide contemporary surveys to update National Ocean Service (NOS) nautical charts. All separates are filed with the hydrographic data. Any revisions to the Descriptive Report (DR) generated during office processing are shown in bold, red italic text. The processing branch maintains the DR as a field unit product, therefore, all information and recommendations within the body of the DR are considered preliminary unless otherwise noted. The final disposition of surveyed features is represented in the OCS nautical chart update products. All pertinent records for this survey, including the DR, are archived at the National Geophysical Data Center (NGDC) and can be retrieved via http:// www.ngdc.noaa.gov/. Table of Contents
A. Area Surveyed...... 1 A.1 Survey Limits...... 1 A.2 Survey Purpose...... 7 A.3 Survey Quality...... 8 A.4 Survey Coverage...... 9 A.5 Survey Statistics...... 12 B. Data Acquisition and Processing...... 15 B.1 Equipment and Vessels...... 15 B.1.1 Vessels...... 15 B.1.2 Equipment...... 17 B.2 Quality Control...... 17 B.2.1 Crosslines...... 17 B.2.2 Uncertainty...... 19 B.2.3 Junctions...... 21 B.2.4 Sonar QC Checks...... 26 B.2.5 Equipment Effectiveness...... 27 B.2.6 Factors Affecting Soundings...... 27 B.2.7 Sound Speed Methods...... 28 B.2.8 Coverage Equipment and Methods...... 29 B.3 Echo Sounding Corrections...... 30 B.3.1 Corrections to Echo Soundings...... 30 B.3.2 Calibrations...... 30 B.4 Backscatter...... 30 B.5 Data Processing...... 30 B.5.1 Software Updates...... 30 B.5.2 Surfaces...... 30 C. Vertical and Horizontal Control...... 31 C.1 Vertical Control...... 31 C.2 Horizontal Control...... 32 D. Results and Recommendations...... 32 D.1 Chart Comparison...... 32 D.1.1 Raster Charts...... 42 D.1.2 AWOIS Items...... 43 D.1.3 Maritime Boundary Points ...... 43 D.1.4 Charted Features...... 43 D.1.5 Uncharted Features...... 44 D.1.6 Dangers to Navigation...... 53 D.1.7 Shoal and Hazardous Features...... 53 D.1.8 Channels...... 53 D.1.9 Bottom Samples ...... 60 D.2 Additional Results...... 60 D.2.1 Shoreline...... 60 D.2.2 Prior Surveys...... 61
i D.2.3 Aids to Navigation...... 61 D.2.4 Overhead Features...... 61 D.2.5 Submarine Features...... 61 D.2.6 Ferry Routes and Terminals...... 61 D.2.7 Platforms...... 62 D.2.8 Significant Features...... 62 D.2.9 Construction and Dredging...... 62 D.2.10 New Survey Recommendation...... 62 D.2.11 Inset Recommendation...... 62 E. Approval Sheet...... 63 F. Table of Acronyms...... 64 List of Tables
Table 1: Survey Limits...... 1 Table 2: Hydrographic Survey Statistics...... 13 Table 3: Dates of Hydrography...... 14 Table 4: Vessels Used...... 15 Table 5: Major Systems Used...... 17 Table 6: Survey Specific Sound Speed TPU Values...... 19 Table 7: Junctioning Surveys...... 22 Table 8: Submitted Surfaces...... 31 Table 9: NWLON Tide Stations...... 31 Table 10: USCG DGPS Stations...... 32 Table 11: Largest Scale Raster Charts...... 42 List of Figures
Figure 1: H12389 Assigned Survey Areas...... 2 Figure 2: H12389 - Texas City - Assigned and Survey Area Polygons...... 3 Figure 3: H12389 - Galveston Channel - Assigned and Survey Area Polygons...... 4 Figure 4: H12389 - Offatts Bayou - Assigned and Survey Area Polygons...... 5 Figure 5: Galveston Channel - Deviation from Survey Limits...... 6 Figure 6: Offatts Bayou - Deviation from Survey Limits...... 7 Figure 7: H12389 Multibeam Coverage - 0.5m CUBE Surface...... 9 Figure 8: Galveston Channel - Deviation from Survey Coverage Requirements...... 10 Figure 9: Texas City - Deviation from Survey Coverage Requirements...... 11 Figure 10: Offatts Bayou - Deviation from Survey Coverage Requirements...... 12 Figure 11: S1211 Survey Launch by SeaArk...... 16 Figure 12: Distribution of Data Histogram Binned at 0.1m...... 18 Figure 13: Uncertainty Standards...... 20 Figure 14: Object Detection Coverage...... 21 Figure 15: Survey Overlap Areas Between H12388 and H12389...... 22 Figure 16: Difference Statistics for H12389 and H12388 within Galveston Channel...... 23
ii Figure 17: Difference Color scale for H12389 and H12388 within Galveston Channel...... 24 Figure 18: Difference Statistics for H12389 and H12388 within Texas City Channel...... 25 Figure 19: Difference Color scale for H12389 and H12388 within Texas City Channel...... 26 Figure 20: Systematic Sonar Noise Error...... 27 Figure 21: Density Holidays - Galveston Channel...... 28 Figure 22: Depth Distribution...... 29 Figure 23: Chart Comparison - Texas City...... 33 Figure 24: Chart Comparison - Texas City...... 34 Figure 25: Chart Comparison - Texas City...... 35 Figure 26: Chart Comparison - Galveston Channel...... 36 Figure 27: Chart Comparison - Galveston Channel...... 37 Figure 28: Chart Comparison - Galveston Channel...... 38 Figure 29: Chart Comparison - Galveston Channel...... 39 Figure 30: Chart Comparison - Offatts Bayou...... 40 Figure 31: Chart Comparison - Offatts Bayou...... 41 Figure 32: Chart Comparison - Offatts Bayou...... 42 Figure 33: PA Wreck, Chart 11324 38th ed...... 44 Figure 34: Potential Wrecks in Offatts Bayou...... 45 Figure 35: Potential Wrecks in Offatts Bayou...... 46 Figure 36: Potential Wrecks in Offatts Bayou...... 47 Figure 37: Potential Wrecks in Offatts Bayou...... 48 Figure 38: Potential Wrecks in Offatts Bayou...... 49 Figure 39: Potential Wrecks in Offatts Bayou...... 50 Figure 40: Potential Wrecks in Offatts Bayou...... 51 Figure 41: Potential Wrecks in Offatts Bayou...... 52 Figure 42: Potential Wrecks in Offatts Bayou...... 53 Figure 43: Texas City Turning Basin Controlling Depths...... 54 Figure 44: Texas City - Bolivar Roads to Turning Basin Controlling Depths...... 55 Figure 45: Texas City - Bolivar Roads to Turning Basin Controlling Depths...... 56 Figure 46: Texas City - Bolivar Roads to Turning Basin Controlling Depths...... 57 Figure 47: Galveston Ship Channel Controlling Depths...... 58 Figure 48: Galveston Ship Channel Areas Where Controlling Depths Not Met...... 59 Figure 49: Galveston Ship Channel Areas Where Controlling Depths Not Met...... 60
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Descriptive Report to Accompany Survey H12389
Project: K414_NRT4_2014 Locality: Galveston, TX Sublocality: Texas City, Galveston Channel and Offatts Bayou Scale: 1:10000 May 2014 - September 2014 Navigation Response Team 4 Chief of Party: Dan Jacobs
A. Area Surveyed
H12389 is comprised of three separate areas located within the vicinity of Galveston Island's northeast side, Galveston, TX. The first area comprises the western most portion of the Galveston Channel. The second area is Offatts Bayou. The third is the Texas City Channel running WNW, into the Port of Texas City, Texas. H12389 junctions to H12388 in the Galveston Channel.
A.1 Survey Limits
Data were acquired within the following survey limits:
Northwest Limit Southeast Limit 29° 23' 7.19" N 29° 16' 34.35" N 94° 53' 42.07" W 94° 48' 6.19" W
Table 1: Survey Limits
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Figure 1: H12389 Assigned Survey Areas
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Figure 2: H12389 - Texas City - Assigned and Survey Area Polygons
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Figure 3: H12389 - Galveston Channel - Assigned and Survey Area Polygons
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Figure 4: H12389 - Offatts Bayou - Assigned and Survey Area Polygons
Survey Limits were acquired in accordance with the requirements in the Project Instructions and the HSSD. There were deviations from the Survey Limit requirements for each location. The Galveston channel included two slip locations along the intracoastal waterway (Figure 5). Both slips were shoaler than 4m and considered outside the scope of this sheet. The western most slip was scouted but depths less than 1m were encountered and the area was deemed too shallow to be safe for further investigation. Near the entrance to Offatts Bayou on the western side of the sheet there was a shallow area with many submerged piles, platforms, pipes, and charted 1ft depths (Figure 6). We surveyed to the 4m curve but deemed the shoaler sections unsafe for further investigation.
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Figure 5: Galveston Channel - Deviation from Survey Limits
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Figure 6: Offatts Bayou - Deviation from Survey Limits
A.2 Survey Purpose
The regional Navigation Manager has received pilot and port authority request for hydrographic surveys in Galveston Bay and vicinity. NOAA's Marine Chart Division is OCS also requested NRT4 investigate many charted features and shoreline in the survey area. These features have been highlighted, by hand, on nautical charts from MCD, and provided to the field team as chart mark ups. The shoreline investigation will use the CSF file and the nautical charts to do their investigations. The main purpose is to survey Anchorage Basin A in Bolivar and the newly charted barge channels along the main Houston Ship Channel. MCD also requested NRT4 to investigate numerous charted features near the main Houston Ship Channel, in an effort to reduce localized chart clutter. In addition, Galveston, Texas City, and Houston are port cities on the MTS175 port list and need an ENC verification investigation on features and shoreline. It is the intent of this survey to supersede all bathymetry, sea floor features, and bottom characteristics within the assigned survey area as defined by these instructions for updating of NOAA charts 11324, 11326, 11327 and 11328.
The Houston Ship Channel, Anchorage Basin A in Bolivar Channel, and charts 11327 and 11328 are outside the survey sheet limits and therefore not applicable to H12389.
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A.3 Survey Quality
The entire survey is adequate to supersede previous data.
Sheet H12389 was completed using a concurrent survey technique that included Sidescan and Multibeam sonar coverage. Sidescan and multibeam data were collected along mainstream channels and open areas. Multibeam sonar data was solely collected in areas that had limited maneuverability or were deemed too shallow for the sidescan sonar to be safely deployed. It was also used to feather out the 4m curve and locate the limits of the navigable survey area. The main part of Galveston Channel was the only section that did not include any side scan sonar data due to technical issues with the sonar system during the survey window. NTR4 opted to run with 100% object detection multibeam coverage instead. The intent of this survey is to supersede all bathymetry, sea floor features, and bottom characteristics within the survey boundaries.
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A.4 Survey Coverage
Figure 7: H12389 Multibeam Coverage - 0.5m CUBE Surface
Coverage to the 4m curve was not completely attained in the vicinity of Galveston Channel (Figure 7). Figure 7 details the locations where the 4m curve was not obtained. Location number 1 was deemed to be unsafe to navigate due to the charted submerged old dike and the potential for the bottom to shoal up rapidly. Location 2 was underneath a bridge and dangerous to navigate. Locations 3-8 were all surveyed to the navigable edges of the piers. Each slip was surveyed at depths deeper than 4m. Holidays within the slips were due to the presence of large ships tied up along the pier edges. They did not move within the time frame of this survey. Location number 9 (black polygon) represents numerous, 200 percent sidescan sonar holidays in the backwaters adjoining the Galveston Channel near the 51st Street Bridge. The missing 200 percent sidescan sonar coverage was blunder on the part of the Hydrographer however, the discrepancy could not be remedied as the survey vessel had been laid up for repairs.
Coverage to the 4m curve was nearly but not completely attained in the vicinity of Texas City (Figure 8). Figure 8 details the locations where the 4m curve was not obtained. Locations 1 and 5 are areas were
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surveyed to the navigable edges of the piers and had surveyed depths greater than 4m. Locations 2, 3, and 6 were not surveyed further due to rapidly shoaling bottoms and unsafe survey conditions. The 4m curve was attempted along location 4 but the channel continues far outside of the assigned sheet limits and surveying the rest of the channel was considered outside the scope of this project. Location 7 had docked vessels that did not vacate their location during the time frame of this survey.
Coverage to the 4m curve was nearly but not completely attained in the vicinity of Offatts Bayou (Figure 9). Figure 9 details the locations where the 4m curve was not obtained. Number 1 and 2 ware due to new construction of the Pelican Rest Marina and The Boy Scouts of Americas new boat docks. Number 3 is the location of the public boat launch. Numbers 4-7 were unable to be obtained due to piers/docks/moored boats in the way of our survey vessel.
Raw Sidescan Data (DN205) was not processed as the data was exceptionally noisy due to heavy vessel traffic within the vicinity of the Galveston Channel on that day.
Figure 8: Galveston Channel - Deviation from Survey Coverage Requirements
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Figure 9: Texas City - Deviation from Survey Coverage Requirements
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Figure 10: Offatts Bayou - Deviation from Survey Coverage Requirements Figure 8 details the locations where coverage to the 4 meter curve was not completely attained in the vicinity of Galveston Channel. Figure 9 details the locations where coverage to the 4 meter curve was not completely attained in the vicinity of Texas City. Figure 10 details the locations where coverage to the 4 meter curve was not completely attained in the vicinity of Offatts Bayou.
A.5 Survey Statistics
The following table lists the mainscheme and crossline acquisition mileage for this survey:
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HULL ID S1211 Total SBES 0 0 Mainscheme MBES 0 0 Mainscheme Lidar 0 0 Mainscheme SSS 0 0 Mainscheme LNM SBES/SSS 0 0 Mainscheme MBES/SSS 756.233 756.233 Mainscheme SBES/MBES 61.705 61.705 Crosslines Lidar 0 0 Crosslines Number of 0 Bottom Samples Number of AWOIS 0 Items Investigated Number Maritime Boundary Points 0 Investigated Number of DPs 0 Number of Items Investigated by 0 Dive Ops Total SNM 0
Table 2: Hydrographic Survey Statistics
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The following table lists the specific dates of data acquisition for this survey:
Survey Dates Day of the Year 05/20/2014 140 06/03/2014 154 06/05/2014 156 06/06/2014 157 06/09/2014 160 06/11/2014 162 06/13/2014 164 06/18/2014 169 06/27/2014 178 07/01/2014 182 07/02/2014 183 07/09/2014 190 07/11/2014 192 07/16/2014 197 07/22/2014 203 07/24/2014 205 07/25/2014 206 07/29/2014 210 07/31/2014 212 08/15/2014 227 08/19/2014 231 08/20/2014 232 08/22/2014 234 08/25/2014 237 08/27/2014 239 08/29/2014 241 09/03/2014 246 09/04/2014 247 09/09/2014 252
Table 3: Dates of Hydrography
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Survey mileage for H12389 is as follows: MBES/SSS Mainscheme: 226.927 LNM; MBES Mainscheme: 58.984 LNM; MBES Crossline: 18.806 LNM B. Data Acquisition and Processing
B.1 Equipment and Vessels
Refer to the Data Acquisition and Processing Report (DAPR) for a complete description of data acquisition and processing systems, survey vessels, quality control procedures and data processing methods. Additional information to supplement sounding and survey data, and any deviations from the DAPR are discussed in the following sections.
B.1.1 Vessels
The following vessels were used for data acquisition during this survey:
Hull ID S1211 LOA 10 meters Draft 0.5 meters
Table 4: Vessels Used
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Figure 11: S1211 Survey Launch by SeaArk
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B.1.2 Equipment
The following major systems were used for data acquisition during this survey:
Manufacturer Model Type Kongsburg EM3002 MBES Edgetech 4125 SSS Conductivity, Temperature, SeaBird SeaCat+ and Depth Sensor Positioning and Applanix POS/MV5 Attitude System
Table 5: Major Systems Used
Refer to the Data Acquisition and Processing Report (DAPR) for a complete description of data acquisition and processing systems, survey vessels, quality control procedures and data processing methods.
The Seabird Model 19 Plus CTD profiler was used to obtain sound speed profiles of the water column as part of survey H12389.An AML Oceanographic Micro X was used to measure surface sound speed as part of survey H12389.
B.2 Quality Control
B.2.1 Crosslines
Crosslines acquired for this survey totaled 8% of mainscheme acquisition.
Crosslines, acquired for this survey, totaled 8.16% of mainscheme acquisition. This percentage is equivalent to 817.94 Linear Nautical Miles. The requirement for a concurrent survey is 8%.
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Figure 12: Distribution of Data Histogram Binned at 0.1m Surface differencing was used to assess crossline agreement with mainscheme lines. The resulting statistics are depicted in Figure 12. Total crossline mileage for H12389 was 18.8 Linear Nautical Miles. Crosslines acquired as part of survey H12389 totaled 8.5% of mainscheme acquisition.
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B.2.2 Uncertainty
Hull ID Measured - CTD Measured - MVP Surface S1211 0.5 meters/second 0 meters/second 0.3 meters/second
Table 6: Survey Specific Sound Speed TPU Values
An IHO Order 1 child layer called "IHOness" was created on the finalized 0.5 meter surface using the formula: ((0.25+((Depth*0.013)^2))^0.5)-Uncertainty. Then using the Pydro IHO tool Uncertainty and Object detection coverage was calculated. Figure 13 shows the Uncertainty standards and that 95.16% of all nodes passed with a 95% confidence or greater.
Uncertainty values of submitted, finalized grids were calculated in CARIS using the "Greater of the Two" of total propagated uncertainty and standard deviation (scaled to 95%). All project depths were less than 100 meters thus the IHO Order 1 Formula: ((0.5^2 + ((Depth *0.013)^2 )) ^0.5), was implemented for quality control analysis. Therefore survey depths of 4~18 meters had an acceptable uncertainty budget range of 0.500 meters to .564 meters. Figure 14 shows that 99.47% of the nodes passed the object detection requirement of 5 soundings per node.
There were many factors that caused increased uncertainty errors. These environmental factors include: 1)Acoustic "ringing"artifacts along piers and hulls of large ships. 2) Dredging and shipping operations the created high turbidity in the water column and often cause the sonar system to lose the bottom trace 3) Environmental factors such as hot water discharge from the factory operations along the piers.
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Figure 13: Uncertainty Standards
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Figure 14: Object Detection Coverage While several environmental factors are identified as possibly increasing uncertainty, it should be noted that the survey data is well within specifications with regard to uncertainty and are adequate for charting.
B.2.3 Junctions
Sheet H12388-Galveston Bay junctions to the South East of H12391 which was surveyed in 2012 and is part of the same project, OPR-K414-NRT4-14.
The following junctions were made with this survey:
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Registry Relative Scale Year Field Unit Number Location H12388 1:110000 2014 Navigation Response Team 4 NE
Table 7: Junctioning Surveys
H12388
The overlapping region of each sheet's BASE surface were compared using the CARIS difference surface tool. The overlapping area along Galveston channel returned difference values of -1.04m for the mean and 0.63m for the standard deviation. The overlapping area along the Texas city channel returned difference values of -0.65m for the mean and 0.52m for the standard deviation. These number are likely high due to a one year time gap between surveys as well as extensive dredging in the area.
Figure 15: Survey Overlap Areas Between H12388 and H12389
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Figure 16: Difference Statistics for H12389 and H12388 within Galveston Channel
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Figure 17: Difference Color scale for H12389 and H12388 within Galveston Channel
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Figure 18: Difference Statistics for H12389 and H12388 within Texas City Channel
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Figure 19: Difference Color scale for H12389 and H12388 within Texas City Channel Survey H12388 has a scale of 1:10,000 and junctions on the east side of survey H12389. Survey H12391 does not share a common boundary with H12389. Junction survey H12388 was conducted 2013. Dredging activity may not entirely account for the shoaler depths of survey H12389 (2014) as compared with H12388 (2013) in the area of common overlap on the east side of the Galveston Channel. H12389 depths as surveyed indicate that sediment accumulation may have occurred during the one year time gap between the two surveys.
B.2.4 Sonar QC Checks
Sonar system quality control checks were conducted as detailed in the quality control section of the DAPR.
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B.2.5 Equipment Effectiveness
There were no conditions or deficiencies that affected equipment operational effectiveness.
B.2.6 Factors Affecting Soundings
Systematic Sonar Noise Error
During survey processing, NRT4 noticed that there was a thin string of soundings along Nadir that always seemed to appear at the surface of our data but were removed by the CARIS processing software before BASE surface creation. After completing the survey we ran a BIST test on our multibeam sonar and discovered our sonar system failed the test.
Figure 20: Systematic Sonar Noise Error Failure of the BITS test may be considered an indication of overall sonar system health; data acquired as part of H12389 were found to be adequate to supersede depths as charted during office processing.
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Density Holidays
Because the Galveston Channel is a highly active shipping port there were many factors that caused density holidays. Despite repeated attempts to go over these areas (sometimes 3 or 4 times) the acoustic dynamics of the bathymetric environment were not conducive to robust data collection. These environmental factors include: 1) Vessels at anchor that didn't move during the survey window 2)Acoustic "ringing"artifacts along piers and hulls of large ships. 3) Data blowouts that needed to be edited out due to the metal lined pier faces and hulls of large ships. 4) Dredging operations the created high turbidity in the water column and often cause the sonar system to lose the bottom trace 5) Environmental factors such as hot water discharge from the factory operations along the piers.
Figure 21: Density Holidays - Galveston Channel The data is adequate for charting despite the environmental factors that reduced the data density.
B.2.7 Sound Speed Methods
Sound Speed Cast Frequency: CTD casts were performed and the data loaded into the Kongsberg EM 3002 (flat-faced) multibeam echo sounder using SIS acquisition software prior to logging MBES data. Sound
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speed casts were taken every four (4) hours except in areas where the Hydrographer expected CTD values to exhibit high variability spatially and/or temporally, i.e. in the vicinity of river mouths or in shallow bays susceptible to rapid thermal changes.
The survey area surrounded 2 major shipping channels and a Bayou. The depth changes were at times rapid and extreme. Figure 22 shows that the majority of the data collected during this survey were in depths between 3-6m (4m curve investigation) and 13-16m (shipping channels). The CTD casts were always collected in the deepest sections of the water body nearest the survey location.
Figure 22: Depth Distribution
B.2.8 Coverage Equipment and Methods
All equipment and survey methods were used as detailed in the DAPR.
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B.3 Echo Sounding Corrections
B.3.1 Corrections to Echo Soundings
All data reduction procedures conform to those detailed in the DAPR.
B.3.2 Calibrations
All sounding systems were calibrated as detailed in the DAPR.
B.4 Backscatter
Backscatter was not collected for this survey.
B.5 Data Processing
B.5.1 Software Updates
There were no software configuration changes after the DAPR was submitted.
The following Feature Object Catalog was used: NOAA Profile V_5_2
B.5.2 Surfaces
The following surfaces and/or BAGs were submitted to the Processing Branch:
Surface Surface Surface Name Resolution Depth Range Purpose Type Parameter MBES 0 meters - TracklineSBES H12389_MBES_50cm_MLLW CUBE 0.5 meters NOAA_0.5m 20 meters Set Line Spacing MBES 0 meters - TracklineSBES H12389_MBES_50cm_MLLW_Final CUBE 0.5 meters NOAA_0.5m 20 feet Set Line Spacing 0 meters - H12389_SSS_100 SSS Mosaic 1 meters N/A 100% SSS 20 meters
H12389_SSS_200 SSS Mosaic 1 meters 0 meters - N/A 200% SSS
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Surface Surface Surface Name Resolution Depth Range Purpose Type Parameter 20 meters
Table 8: Submitted Surfaces
CUBE surfaces submitted to the processing branch have a depth range of -0.38 meters to 23.94 meters.
C. Vertical and Horizontal Control
Additional information discussing the vertical or horizontal control for this survey can be found in the accompanying HVCR.
C.1 Vertical Control
The vertical datum for this project is Mean Lower Low Water.
Standard Vertical Control Methods Used:
TCARI
The following National Water Level Observation Network (NWLON) stations served as datum control for this survey:
Station Name Station ID Galveston North Jetty 8771341 Galveston Pier 21 8771450 Eagle Point 8771013 Morgans Point 8770613 Galveston RR Bridge 8771486
Table 9: NWLON Tide Stations
There was no Water Level file associated with this survey.
There was no Tide Corrector file associated with this survey.
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A request for final approved tides was sent to N/OPS1 on 09/11/2014. The final tide note was received on 09/22/2014.
The tide corrector file 'K414NRT42014.tc' was used for survey H12389. See attached Tide Note dated September 22, 2014
An HVCR was not submitted as part of H12389. C.2 Horizontal Control
The horizontal datum for this project is North American Datum of 1983 (NAD83).
The projection used for this project is UTM Zone 15 North.
The following DGPS Stations were used for horizontal control:
DGPS Stations Angleton, TX 301 KHz
Table 10: USCG DGPS Stations
D. Results and Recommendations
D.1 Chart Comparison
In the following figures below, surveyed soundings that were deeper by more than 2 feet as compared charted soundings were circled in blue. Surveyed soundings which ranged between +/- 2 feet of charted soundings were circled in green. Surveyed soundings that were shoaler by 2 feet or more were circled in red. Sheet H12389 demonstrated a strong correlation between the charted depths and the surveyed depths. The only location where the chart comparison yielded depths shoaler that the charted depths was in Galveston channel inside 3 of the surveyed slips. Although differences reached upwards of 9ft, the port authority is cognizant of these discrepancies and correspondence regarding the issue is documented in the "Survey Correspondence" fold of this project. All other survey locations were shown to be within 1-2 ft of charted depths or deeper.
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Figure 23: Chart Comparison - Texas City
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Figure 24: Chart Comparison - Texas City
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Figure 25: Chart Comparison - Texas City
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Figure 26: Chart Comparison - Galveston Channel
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Figure 27: Chart Comparison - Galveston Channel
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Figure 28: Chart Comparison - Galveston Channel
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Figure 29: Chart Comparison - Galveston Channel
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Figure 30: Chart Comparison - Offatts Bayou
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Figure 31: Chart Comparison - Offatts Bayou
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Figure 32: Chart Comparison - Offatts Bayou Depths as surveyed in Offatts Bayou were found to be shoaler than charted depths by up to four feet. See attached correspondence regarding the Galveston Channel slips.
D.1.1 Raster Charts
The following are the largest scale raster charts, which cover the survey area:
Chart Scale Edition Edition Date LNM Date NM Date 11324 1:125000 38 06/2013 06/22/2013 06/18/2013
Table 11: Largest Scale Raster Charts
11324
Chart 11324 encompasses the Galveston Bay Entrance, the eastern half of Galveston, and the western end of the Bolivar Peninsula. It also includes the southern half of the Houston Ship Channel starting from Bolivar 42 H12389 Navigation Response Team 4
Roads. The controlling depths stated on the chart are discussed in section D.1 Channels. Advancing towards Houston from Bolivar Roads the survey showed extensive deepening throughout the channel due to recent dredging. The chart shows a shoaled area with a depth of 6ft. This location has since been dredged out to approximate depths of 28ft as discussed in section D.1 Chart Comparison.
Chart 11324 has a scale of 1:25,000.
D.1.2 AWOIS Items
No AWOIS items were assigned for this survey.
D.1.3 Maritime Boundary Points
No Maritime Boundary Points were assigned for this survey.
D.1.4 Charted Features
The PA Wreck located at 29/18/48.16N and 94/49/41.89 was disproved at its current, charted (11324) location with object detection MBES. However, incomplete SSS coverage within this vicinity precluded a definitive recommendation by NRT4 to remove or relocate the charted wreck PA symbol.
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Figure 33: PA Wreck, Chart 11324 38th ed. It was determined during office processing that the wreck does not exist and it has been recommended that it be removed.
D.1.5 Uncharted Features
During the concurrent survey of Offatts Bayou 26 potential wrecks or obstructions were located. Local knowledge from NOAA divers indicated that some of the wrecks were vehicles. They also mentioned that it was believed that Moody Airfield had disposed some of their surplus aircraft into the bayou in excess of 50 years ago. Therefore it is possible that some of the more cylindrical wrecks could be the cabins of small planes. Figures 33 through 41 show each potential wreck, its length, height, location, and sidescan sonar contacts where collected. The largest vessel discovered is approximately 40ft in length and 15ft in height. Please reference the Final Features File layer named "H12398_FFF.hob," submitted with this project for further information and S57 attribution.
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Figure 34: Potential Wrecks in Offatts Bayou
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Figure 35: Potential Wrecks in Offatts Bayou
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Figure 36: Potential Wrecks in Offatts Bayou
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Figure 37: Potential Wrecks in Offatts Bayou
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Figure 38: Potential Wrecks in Offatts Bayou
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Figure 39: Potential Wrecks in Offatts Bayou
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Figure 40: Potential Wrecks in Offatts Bayou
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Figure 41: Potential Wrecks in Offatts Bayou
52 H12389 Navigation Response Team 4
Figure 42: Potential Wrecks in Offatts Bayou
D.1.6 Dangers to Navigation
No Danger to Navigation Reports were submitted for this survey.
D.1.7 Shoal and Hazardous Features
Shoaling was evident on the western end of the Galveston Channel, specifically the slips between Piers 37 through 41, Chart 11324. Although initially thought to be Dangers to Navigation, correspondence with various stakeholders and authorities revealed the shoaling is well known within the Galveston maritime community. See Correspondence Folder for email threads and graphics pertaining to this matter.
Numerous wrecks and obstructions ensonified in Offatts Bayou as part of survey H12389 may also be considered potentially hazardous. The shoalest wreck or obstruction has a least depth of 13.4 feet and represents a significant chart discrepancy, however, due to the shoaler controlling depth of 12 feet at the entrance to Offatts Bayou, these features are not considered Dangers to Navigation (DtoNs). See attached correspondence regarding the Galveston Channel slips.
D.1.8 Channels
Texas City Turning Basin: The controlling depths for the channels at MLLW are: Left Outside Quarter: 46.0ft Left Inside Quarter: 46.0ft Right Inside Quarter: 40.0ft Right Outside Quarter: 41.0ft All locations meet controlling depth requirements within the turning basin (Figure 28).
53 H12389 Navigation Response Team 4
Bolivar Roads to Turning Basin: The controlling depths for the channels at MLLW are: Left Outside Quarter: 45.0ft Left Inside Quarter: 48.0ft Right Inside Quarter: 48.0ft Right Outside Quarter: 45.0ft Within the Bolivar Roads to Turning Basin segment there were only 2 areas where shoaling is starting to occur causing the controlling depths to not be met (Figure 31).
Galveston Ship Channel: Most areas surveyed within the western half of the Galveston Channel meet the controlling depth requirements. The controlling depths for the channels at MLLW are: Left Outside Quarter: 24.2ft Left Inside Quarter: 36ft Right Inside Quarter: 35.3ft Right Outside Quarter: 30.3ft There were only 2 locations where shoaling is starting to occur causing the controlling depths to not be met (Figures 33 and 34).
Figure 43: Texas City Turning Basin Controlling Depths
54 H12389 Navigation Response Team 4
Figure 44: Texas City - Bolivar Roads to Turning Basin Controlling Depths
55 H12389 Navigation Response Team 4
Figure 45: Texas City - Bolivar Roads to Turning Basin Controlling Depths
56 H12389 Navigation Response Team 4
Figure 46: Texas City - Bolivar Roads to Turning Basin Controlling Depths
57 H12389 Navigation Response Team 4
Figure 47: Galveston Ship Channel Controlling Depths
58 H12389 Navigation Response Team 4
Figure 48: Galveston Ship Channel Areas Where Controlling Depths Not Met
59 H12389 Navigation Response Team 4
Figure 49: Galveston Ship Channel Areas Where Controlling Depths Not Met All locations within the Texas City turning basin did not meet controlling depths requirements. An obstruction with a least depth of 45.6 feet was ensonified in the Left Inside Quarter and is shoaler than the current controlling depth of 48 feet. Surveyed depths within the Galveston Channel may be deemed unreliable due to ongoing dredging which occurred during data acquistion for H12389.
D.1.9 Bottom Samples
No bottom samples were required for this survey.
D.2 Additional Results
D.2.1 Shoreline
NRT4 completed a limited Shoreline Investigation. Please reference the Final Feature File (intended for review in CARIS Bathy Database software) included with this project in the "Features" folder. All designated soundings WITHOUT S57 feature correlation were soundings which appeared to be the shoalest
60 H12389 Navigation Response Team 4
points over insignificant rises from the seabed. They were designated in order to be honored by the finalized 1meter CUBE surface but not categorized as a feature.
Sidescan Sonar (SSS) contacts (100 percent and 200 percent) are listed as separate layers and usually correlated spacially to a "primary" multibeam designated sounding with S57 attribution. Instances where SSS contacts exist WITHOUT a correlating designated sounding were initially suspected targets that were later disproved during object detection MBES data review.
Unless otherwise specified, designated soundings WITHOUT correlating SSS contacts indicate targets esonified with MBES but too shallow for a safe approach with the towed Sidescan Sonar.
A 50cm resolution CUBE surface was submitted as part of survey H12389.
D.2.2 Prior Surveys
Prior surveys were not investigated as part of survey H12389.
D.2.3 Aids to Navigation
All charted (11324, 38th Edition) navigation aids within the project area were observed to be in serviceable condition and serving their intended purpose.
D.2.4 Overhead Features
No overhead features exist for this survey.
Three charted overhead features exist within the sheet limits of survey H12389 but were not investigated.
D.2.5 Submarine Features
Charted (11324) Pipeline Area found just north of the Texas City Turning Basin.
A charted pipeline area exists in the Texas City Turning basin and should be retained as charted. Side scan imagery indicate the existence of a pipeline in the area. A charted cable area exists at the east end of the Texas City Channel and should be retained as charted. Bathymetry and side scan data indicate that submerged cables exist in the area.
D.2.6 Ferry Routes and Terminals
No ferry routes or terminals exist for this survey.
61 H12389 Navigation Response Team 4
D.2.7 Platforms
No platforms exist for this survey.
One charted platform (ruins) exists outside the Texas City Channel and was disproved as part of survey H12389. Two charted platforms (ruins) exist in Offatts Bayou but were not investigated.
D.2.8 Significant Features
Significant features exist for this survey. Located 26 ship wrecks in the vicinity of Offatts Bayou.
The S-57 file as submitted from the field hydrographer contains a total of fifteen new features attributed as wrecks, fourteen of which are in the vicinity of Offatts Bayou. The rest of the significant new features were submitted as obstructions.
D.2.9 Construction and Dredging
A dredging ship was underway and operating in the east end of the Galveston Channel portion of this survey, July 2014. Some mainscheme line data does not correlate well as a result of these operations.
D.2.10 New Survey Recommendation
No new surveys or further investigations are recommended for this area.
D.2.11 Inset Recommendation
No new insets are recommended for this area.
62
Acronym Definition HSTP Hydrographic Systems Technology Programs HSX Hypack Hysweep File Format HTD Hydrographic Surveys Technical Directive HVCR Horizontal and Vertical Control Report HVF HIPS Vessel File IHO International Hydrographic Organization IMU Inertial Motion Unit ITRF International Terrestrial Reference Frame LNM Local Notice to Mariners LNM Linear Nautical Miles MCD Marine Chart Division MHW Mean High Water MLLW Mean Lower Low Water NAD 83 North American Datum of 1983 NAIP National Agriculture and Imagery Program NALL Navigable Area Limit Line NM Notice to Mariners NMEA National Marine Electronics Association NOAA National Oceanic and Atmospheric Administration NOS National Ocean Service NRT Navigation Response Team NSD Navigation Services Division OCS Office of Coast Survey OMAO Office of Marine and Aviation Operations (NOAA) OPS Operations Branch MBES Multibeam Echosounder NWLON National Water Level Observation Network PDBS Phase Differencing Bathymetric Sonar PHB Pacific Hydrographic Branch POS/MV Position and Orientation System for Marine Vessels PPK Post Processed Kinematic PPP Precise Point Positioning PPS Pulse per second Acronym Definition PRF Project Reference File PS Physical Scientist PST Physical Science Technician RNC Raster Navigational Chart RTK Real Time Kinematic SBES Singlebeam Echosounder SBET Smooth Best Estimate and Trajectory SNM Square Nautical Miles SSS Side Scan Sonar ST Survey Technician SVP Sound Velocity Profiler TCARI Tidal Constituent And Residual Interpolation TPE Total Porpagated Error TPU Topside Processing Unit USACE United States Army Corps of Engineers USCG United Stated Coast Guard UTM Universal Transverse Mercator XO Executive Officer ZDA Global Positiong System timing message ZDF Zone Definition File UNITED STATES DEPARMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Silver Spring, Maryland 20910 TIDE NOTE FOR HYDROGRAPHIC SURVEY
DATE: September , 2014
HYDROGRAPHIC BRANCH: Pacific HYDROGRAPHIC PROJECT: OPR-K414-NRT4-14 HYDROGRAPHIC SHEET: H12389
LOCALITY: TIME *DOYHVWRQ%D\DQG9LFLQLW\7; PERIOD: 0D\20, 2014 - September 09, 2014 TIDE STATION USED: Galveston Bay Entrance, TX 877-1341 Lat.29° 21.4’ N Long. 94° 43.5' W PLANE OF REFERENCE (MEAN LOWER LOW WATER): 0.000 meters HEIGHT OF HIGH WATER ABOVE PLANE OF REFERENCE: 0.473 meters TIDE STATION USED: Galveston Pier 21, TX 877-1450 Lat. 29° 18.6' N Long. 94° 47.6' W PLANE OF REFERENCE (MEAN LOWER LOW WATER): 0.000 meters HEIGHT OF HIGH WATER ABOVE PLANE OF REFERENCE: 0.403 meters TIDE STATION USED: Galveston Railroad Bridge, TX 877-1486 Lat. 29° 18.2' Long. 94° 53.8' PLANE OF REFERENCE (MEAN LOWER LOW WATER): 0.000 meters HEIGHT OF HIGH WATER ABOVE PLANE OF REFERENCE: 0.355 meters TIDE STATION USED: Eagle Point, TX 877-1013 Lat. 29° 28.8' Long. 94° 55.1' PLANE OF REFERENCE (MEAN LOWER LOW WATER): 0.000 meters HEIGHT OF HIGH WATER ABOVE PLANE OF REFERENCE: 0.325 meters TIDE STATION USED: Morgans Point, TX 877-0613 Lat. ° . ' Long. 94° 59.1' PLANE OF REFERENCE (MEAN LOWER LOW WATER): 0.000 meters HEIGHT OF HIGH WATER ABOVE PLANE OF REFERENCE: 0.377 meters REMARKS: RECOMMENDED Grid Please use the TCARI grid "K414NRT42014.tc" as the final grid for project OPR- K414-NRT4-2014, H12389, during the time period between May 20, 2014 - September 09, 2014. Refer to attachments for grid information. Note 1: Provided time series data are tabulated in metric units (meters), relative to MLLW and on Greenwich Mean Time on the 1983-2001 National Tidal Datum Epoch (NTDE). Note 2: Due to inaccurate shoreline data around Galveston Bay, TX, survey tracklines may fall outside the preliminary TCARI boundary. PYDRO will automatically extrapolate the TCARI solution to cover these points.
Digitally signed by HOVIS.GERALD.THOMAS.JR.1365860250 HOVIS.GERALD.THOM DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=OTHER, cn=HOVIS.GERALD.THOMAS.JR.1365860250 AS.JR.1365860250 Date: 2014.09.24 09:41:20 -04'00' CHIEF, PRODUCTS AND SERVICES BRANCH
National Oceanic and Atmospheric Administration Mail - DTON Possible Page 1 of 6
Dan Jacobs - NOAA Federal
DTON Possible 8 messages
Dan Jacobs - NOAA Federal
Hi Alan.
Attached are two graphics of the shoaling found in Galveston Channel's west end last week, (Chart 11324). Can you find out which kind of vessels use these piers and if they accept drafts that would jeapordize?
I will initiate a Danger To Navigation (DTON) Report to our charting branch, the USCG, Pilots and USACE if these shoaler soundings present a risk.
Typically, in a high traffic area in which commercial shipping occurs, a one meter sounding discrepancy in <20 meters depths makes that sounding eligible for DTON status.
R,
-- Dan Jacobs Team Leader (acting) Navigation Response Team 4 206.402.2500
H12389_Analysis.pdf 1540K
Alan Bunn
Gentlemen - our Navigation Response Survey Team lead, Dan Jacobs, has noted some significant shoaling as noted below. Please review and let us know what kind of traffic (barge, ship, typical draft) transits this area, and concerns you may have. Obviously it is outside of the Federally Maintained channel, but may be of concern enough for us in concert with the USCG to give out a NTM Danger to Navigation Alert!?
Please let Dan and I know what you think. I will be out of town the rest of the week, but will discuss further with Dan when we receive responses.
Thanx....ARB.
Sent from my iPad
Begin forwarded message:
From: Dan Jacobs - NOAA Federal
https://mail.google.com/mail/u/0/?ui=2&ik=eb9ca0c6c7&view=pt&q=dton&psize=50&p... 12/10/2014 National Oceanic and Atmospheric Administration Mail - DTON Possible Page 2 of 6
To: Alan Bunn - NOAA Federal
[Quoted text hidden]
H12389_Analysis.pdf 1540K
po
Alan,
With the exception of the Duval Slip, all these shoal areas represent significant reductions in depths relative to the advertised/assumed depths by which we work. Most of these slips are utilized by offshore construction/supply/dive support vessels or smaller freighters with light drafts. These are however, typically in the range of the depths surveyed. There is also a ship repair facility operating out of pier 40/41 slip that occasionally asks us to bring in larger vessels. These depths would result in a "NO GO" for this operation. We have also had several difficulties at the very end of the harbor, near the pelican island bridge with larger deeper vessels.
I'd be happy to be more specific if need be.
Thanks for your diligence.
Best regards, Christos
Captain Christos Sotirelis Presiding Officer Galveston-Texas City Pilots [email protected] (409) 539-9688
On Aug 5, 2014, at 18:29, "Alan Bunn"
Gentlemen - our Navigation Response Survey Team lead, Dan Jacobs, has noted some significant shoaling as noted below. Please review and let us know what kind of traffic (barge, ship, typical draft) transits this area, and concerns you may have. Obviously it is outside of the Federally Maintained channel, but may be of concern enough for us in concert with the USCG to give out a NTM Danger to Navigation Alert!?
Please let Dan and I know what you think. I will be out of town the rest of the week, but will discuss further with Dan when we receive responses.
Thanx....ARB.
Sent from my iPad
Begin forwarded message:
From: Dan Jacobs - NOAA Federal
https://mail.google.com/mail/u/0/?ui=2&ik=eb9ca0c6c7&view=pt&q=dton&psize=50&p... 12/10/2014 National Oceanic and Atmospheric Administration Mail - DTON Possible Page 3 of 6
Date: August 5, 2014 at 11:28:13 AM CDT To: Alan Bunn - NOAA Federal
Hi Alan.
Attached are two graphics of the shoaling found in Galveston Channel's west end last week, (Chart 11324). Can you find out which kind of vessels use these piers and if they accept drafts that would jeapordize?
I will initiate a Danger To Navigation (DTON) Report to our charting branch, the USCG, Pilots and USACE if these shoaler soundings present a risk.
Typically, in a high traffic area in which commercial shipping occurs, a one meter sounding discrepancy in <20 meters depths makes that sounding eligible for DTON status.
R,
-- Dan Jacobs Team Leader (acting) Navigation Response Team 4 206.402.2500
<"AVG certification".txt>
AVG Certification.txt 1K
Alan Bunn
Spoke w Deputy Director, Port of Galveston last night. He was going to review your e-mail I forwarded to him and get back to you. The Galveston Pilots seem to think we need to note these depths, let's see what The Port comes back with and pass up our chain!
I'll b by before noon!
Thanx....ARB.
Sent from my iPad
Begin forwarded message:
From: po
[Quoted text hidden]
https://mail.google.com/mail/u/0/?ui=2&ik=eb9ca0c6c7&view=pt&q=dton&psize=50&p... 12/10/2014 National Oceanic and Atmospheric Administration Mail - DTON Possible Page 4 of 6
AVG Certification.txt 1K
Dan Jacobs - NOAA Federal
Sounds great. I'll be standing by. Your suburban is washed up and gassed. [Quoted text hidden]
Peter Simons
Christos/Alan,
I can only speak to the slips between piers 36 and 37, 38 and 39 and 40 and 41. We had survey work done in those areas in early May and the results see attached – show significantly deeper water. For example, where your team shows approximately 22’ in the slip between 40 and 41, we show 28’ of water. (We don’t get to 22’ until nearly 1000’ into the slips.) We are working on a project with Malin to dredge the slip between 40 and 41. In the meantime, Earl (our harbormaster) coordinates closely with the pilots and the customers re suitability of berths (nav draft, etc.) before we commit to receiving a particular vessel so, since these areas are outside the Federally maintained channel, I would think that a notice would not be necessary.
From: po [mailto:[email protected]] Sent: Wednesday, August 06, 2014 9:04 AM To: Alan Bunn Cc: Peter Simons; Wally Hogan; Dan Jacobs - NOAA Federal Subject: Re: DTON Possible
[Quoted text hidden]
May 2014 condition survey 35 thru 41.pdf 569K
Earl Kalsnes
You are absolutely right Peter! I work closely with Malin, Pilots & Agents before allowing any vessel into P40/41 or any of our slips because of our available depths!
https://mail.google.com/mail/u/0/?ui=2&ik=eb9ca0c6c7&view=pt&q=dton&psize=50&p... 12/10/2014 National Oceanic and Atmospheric Administration Mail - DTON Possible Page 5 of 6
Sent from my iPhone
On Aug 6, 2014, at 2:46 PM, "Peter Simons"
> Christos/Alan, > > I can only speak to the slips between piers 36 and 37, 38 and 39 and 40 and 41. We had survey work done in those areas in early May and the results - see attached – show significantly deeper water. For example, where your team shows approximately 22’ in the slip between 40 and 41, we show 28’ of water. (We don’t get to 22’ until nearly 1000’ into the slips.) We are working on a project with Malin to dredge the slip between 40 and 41. In the meantime, Earl (our harbormaster) coordinates closely with the pilots and the customers re suitability of berths (nav draft, etc.) before we commit to receiving a particular vessel so, since these areas are outside the Federally maintained channel, I would think that a notice would not be necessary. > > From: po [mailto:[email protected]] > Sent: Wednesday, August 06, 2014 9:04 AM > To: Alan Bunn > Cc: Peter Simons; Wally Hogan; Dan Jacobs - NOAA Federal > Subject: Re: DTON Possible > > Alan, > > With the exception of the Duval Slip, all these shoal areas represent significant reductions in depths relative to the advertised/assumed depths by which we work. Most of these slips are utilized by offshore construction/supply/dive support vessels or smaller freighters with light drafts. These are however, typically in the range of the depths surveyed. There is also a ship repair facility operating out of pier 40/41 slip that occasionally asks us to bring in larger vessels. These depths would result in a "NO GO" for this operation. We have also had several difficulties at the very end of the harbor, near the pelican island bridge with larger deeper vessels. > > I'd be happy to be more specific if need be. > > Thanks for your diligence. > > Best regards, > Christos > > Captain Christos Sotirelis > Presiding Officer > Galveston-Texas City Pilots > [email protected]
https://mail.google.com/mail/u/0/?ui=2&ik=eb9ca0c6c7&view=pt&q=dton&psize=50&p... 12/10/2014 National Oceanic and Atmospheric Administration Mail - DTON Possible Page 6 of 6
> Begin forwarded message: > > From: Dan Jacobs - NOAA Federal
Wallace Hogan
Alan, The slips that show less water than advertise are used for offshore research vessels and smaller shallow draft freighters like Christos mentioned. However Malin Ship Repair utilizes slip 41 where in the past we had some boarder line draft ships wanting to call thats when Earl the Galveston Harbor Master produced soundings sufficient for the particular vessel calling otherwise we would not berth her there. As long as I can remember there's always been shoaling by the PI Bridge due to the currents that bottle neck there. In the past we've always worked it out with the POG they know and respect our guidelines. Respectfully,
Capt. Wallace R. Hogan Galveston Texas City Pilots
[Quoted text hidden]
https://mail.google.com/mail/u/0/?ui=2&ik=eb9ca0c6c7&view=pt&q=dton&psize=50&p... 12/10/2014 H12389 Feature Report
Registry Number: H12389 State: Texas Locality: Galveston, Texas Sub-locality: Galveston Channel and Offats Bayou Project Number: OPR-K414-NRT4-14 Survey Dates: May 20th 2014 - September 9th 2014
Charts Affected
Number Edition Date Scale (RNC) RNC Correction(s)* USCG LNM: None (3/17/2015) 11324 38th 06/01/2013 1:25,000 (11324_2) NGA NTM: None (3/21/2015) USCG LNM: 2/3/2015 (3/17/2015) 11324 38th 06/01/2013 1:25,000 (11324_1) NGA NTM: 4/6/2010 (3/21/2015) 11322 32nd 11/01/2008 1:40,000 (11322_1) [L]NTM: ? 11331 21st 01/01/2009 1:40,000 (11331_4) [L]NTM: ? 11323 62nd 12/01/2006 1:80,000 (11323_1) [L]NTM: ? 11326 36th 09/01/2008 1:80,000 (11326_6) [L]NTM: ? 11330 19th 08/01/2008 1:250,000 (11330_1) [L]NTM: ? 11340 73rd 08/01/2008 1:458,596 (11340_1) [L]NTM: ? 1116A 73rd 08/01/2008 1:458,596 (1116A_1) [L]NTM: ? 1117A 42nd 03/01/2008 1:460,732 (1117A_1) [L]NTM: ? 11300 42nd 03/01/2008 1:460,732 (11300_1) [L]NTM: ? 411 52nd 09/01/2007 1:2,160,000 (411_1) [L]NTM: ?
* Correction(s) - source: last correction applied (last correction reviewed--"cleared date")
Features
Feature Survey Survey Survey No. Name Type Depth Latitude Longitude 1.1 3.1m WRECK Wreck 3.17 m 29° 17' 10.9" N 094° 51' 06.4" W 1.2 disproved WRECK Wreck 0.00 m 29° 18' 48.0" N 094° 49' 42.1" W 1.3 6.4m WRECK Wreck 6.47 m 29° 21' 47.8" N 094° 48' 36.6" W 2.1 4.9m WRECK Wreck 4.91 m 29° 16' 39.8" N 094° 51' 16.9" W
Generated by Pydro v14.6(r5024) on Wed May 13 18:52:21 2015 [UTC] 2.2 4.6m WRECK Wreck 4.61 m 29° 16' 54.9" N 094° 51' 16.3" W 2.3 4.2m WRECK Wreck 4.26 m 29° 16' 42.1" N 094° 51' 16.3" W 2.4 4.4m WRECK Wreck 4.46 m 29° 16' 40.7" N 094° 51' 15.0" W 2.5 4.3m WRECK Wreck 4.35 m 29° 16' 53.2" N 094° 51' 09.4" W 2.6 4.2m WRECK Wreck 4.27 m 29° 16' 57.7" N 094° 50' 57.7" W 2.7 4.0m WRECK Wreck 4.09 m 29° 17' 04.7" N 094° 50' 44.6" W 2.8 5.9m WRECK Wreck 5.90 m 29° 17' 00.6" N 094° 50' 41.7" W 2.9 2.6m WRECK Wreck 2.60 m 29° 17' 13.2" N 094° 50' 41.2" W 2.10 4.9m WRECK Wreck 4.91 m 29° 17' 11.4" N 094° 50' 39.9" W 2.11 7.6m WRECK Wreck 7.68 m 29° 17' 07.6" N 094° 50' 16.2" W 2.12 4.9m WRECK Wreck 4.90 m 29° 17' 07.8" N 094° 50' 13.7" W 2.13 5.7m WRECK Wreck 5.76 m 29° 16' 57.3" N 094° 50' 08.3" W
Page 2 1 - Charted Features H12389 Feature Report 1 - Charted Features
1.1) 3.1m WRECK
Survey Summary
Survey Position: 29° 17' 10.9" N, 094° 51' 06.4" W Least Depth: 3.17 m (= 10.40 ft = 1.733 fm = 1 fm 4.40 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288524 00001(02260004670C0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: Update charted (11324) wreck with least depth of 3.1 meters
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288524 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 10ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 1 ¾fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 3.169 m WATLEV - 3:always under water/submerged
Page 4 H12389 Feature Report 1 - Charted Features
Office Notes
A shoaler depth nearby of 5.577 ft was found and is likely the least depth of the wreck. Update depth and position of charted wreck
Page 5 H12389 Feature Report 1 - Charted Features
Feature Images
Figure 1.1.1
Page 6 H12389 Feature Report 1 - Charted Features
1.2) disproved WRECK
Survey Summary
Survey Position: 29° 18' 48.0" N, 094° 49' 42.1" W Least Depth: 0.00 m (= 0.00 ft = 0.000 fm = 0 fm 0.00 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2001-013.00:00:00.000 (01/13/2001) Dataset: H12389_Feature_Report.000 FOID: US 0000288525 00001(02260004670D0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1116A_1, 11340_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: Delete assigned, charted (11324) PA wreck. Nothing seen in SSS and MBES data within vicinity.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288525 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 0ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 0fm (1116A_1, 11340_1, 1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 2:depth unknown SORDAT - 20010113 SORIND - US,US,graph,H12389 VALSOU - 0.000 m WATLEV - 3:always under water/submerged
Page 7 H12389 Feature Report 1 - Charted Features
Office Notes
Concur. Remove wreck.
Page 8 H12389 Feature Report 1 - Charted Features
1.3) 6.4m WRECK
Survey Summary
Survey Position: 29° 21' 47.8" N, 094° 48' 36.6" W Least Depth: 6.47 m (= 21.22 ft = 3.537 fm = 3 fm 3.22 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288511 00001(0226000466FF0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11331_4, 11323_1, 11326_6, 11330_1, 1116A_1, 11340_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: Object with least depth of 6.468 meters seen in MBES bathymetry. Retain charted (11324) wreck.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288511 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 21ft (11324_1, 11324_2, 11322_1, 11331_4, 11323_1, 11326_6, 11330_1) 3 ½fm (1116A_1, 11340_1, 1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 6.468 m
Page 9 H12389 Feature Report 1 - Charted Features
WATLEV - 3:always under water/submerged
Office Notes
A shoaler depth nearby of 12.139 ft was found and is likely the least depth of the wreck. Update depth and position of charted wreck
Page 10 H12389 Feature Report 1 - Charted Features
Feature Images
Figure 1.3.1
Page 11 H12389 Feature Report 1 - Charted Features
Page 12 2 - New Features H12389 Feature Report 2 - New Features
2.1) 4.9m WRECK
Survey Summary
Survey Position: 29° 16' 39.8" N, 094° 51' 16.9" W Least Depth: 4.91 m (= 16.10 ft = 2.684 fm = 2 fm 4.10 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288519 00001(0226000467070001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck found with MBES and SSS. Wreck is 7.5 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288519 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 16ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ½fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.908 m
Page 14 H12389 Feature Report 2 - New Features
WATLEV - 3:always under water/submerged
Office Notes
New wreck is in close proximity to two other new wreck. Chart wreck area encompassing the three new wrecks with a least depth of 14.108
Page 15 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.1.1
Page 16 H12389 Feature Report 2 - New Features
2.2) 4.6m WRECK
Survey Summary
Survey Position: 29° 16' 54.9" N, 094° 51' 16.3" W Least Depth: 4.61 m (= 15.11 ft = 2.519 fm = 2 fm 3.11 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288517 00001(0226000467050001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: new uncharted (11324) wreck is 7 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288517 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 15ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ½fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.607 m WATLEV - 3:always under water/submerged
Page 17 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 18 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.2.1
Page 19 H12389 Feature Report 2 - New Features
2.3) 4.2m WRECK
Survey Summary
Survey Position: 29° 16' 42.1" N, 094° 51' 16.3" W Least Depth: 4.26 m (= 13.97 ft = 2.328 fm = 2 fm 1.97 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288514 00001(0226000467020001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New uncharted (11324) wreck found with MBES and SSS is 12.6 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288514 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 14ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.258 m WATLEV - 3:always under water/submerged
Page 20 H12389 Feature Report 2 - New Features
Office Notes
New wreck is in close proximity to two other new wreck. Chart wreck area encompassing the three new wrecks with a least depth of 14.108
Page 21 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.3.1
Page 22 H12389 Feature Report 2 - New Features
2.4) 4.4m WRECK
Survey Summary
Survey Position: 29° 16' 40.7" N, 094° 51' 15.0" W Least Depth: 4.46 m (= 14.62 ft = 2.437 fm = 2 fm 2.62 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288518 00001(0226000467060001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck found with MBES and SSS is 8.7 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288518 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 14ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.456 m WATLEV - 3:always under water/submerged
Page 23 H12389 Feature Report 2 - New Features
Office Notes
New wreck is in close proximity to two other new wreck. Chart wreck area encompassing the three new wrecks with a least depth of 14.108
Page 24 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.4.1
Page 25 H12389 Feature Report 2 - New Features
2.5) 4.3m WRECK
Survey Summary
Survey Position: 29° 16' 53.2" N, 094° 51' 09.4" W Least Depth: 4.35 m (= 14.26 ft = 2.377 fm = 2 fm 2.26 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288523 00001(02260004670B0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New uncharted (11324) wreck found with MBES and SSS is 7.5 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288523 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 14ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.347 m WATLEV - 3:always under water/submerged
Page 26 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 27 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.5.1
Page 28 H12389 Feature Report 2 - New Features
2.6) 4.2m WRECK
Survey Summary
Survey Position: 29° 16' 57.7" N, 094° 50' 57.7" W Least Depth: 4.27 m (= 14.01 ft = 2.335 fm = 2 fm 2.01 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288520 00001(0226000467080001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck found with MBES and SSS is 9 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288520 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 14ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.270 m WATLEV - 3:always under water/submerged
Page 29 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 30 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.6.1
Page 31 H12389 Feature Report 2 - New Features
2.7) 4.0m WRECK
Survey Summary
Survey Position: 29° 17' 04.7" N, 094° 50' 44.6" W Least Depth: 4.09 m (= 13.42 ft = 2.236 fm = 2 fm 1.42 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288516 00001(0226000467040001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck found with MBES is 9 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288516 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 13ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.090 m WATLEV - 3:always under water/submerged
Page 32 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 33 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.7.1
Page 34 H12389 Feature Report 2 - New Features
2.8) 5.9m WRECK
Survey Summary
Survey Position: 29° 17' 00.6" N, 094° 50' 41.7" W Least Depth: 5.90 m (= 19.34 ft = 3.224 fm = 3 fm 1.34 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288521 00001(0226000467090001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: Uncharted (11324) wreck found with MBES and SSS has length of 4.1 meters.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288521 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 19ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 3 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 5.896 m WATLEV - 3:always under water/submerged
Page 35 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 36 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.8.1
Page 37 H12389 Feature Report 2 - New Features
2.9) 2.6m WRECK
Survey Summary
Survey Position: 29° 17' 13.2" N, 094° 50' 41.2" W Least Depth: 2.60 m (= 8.52 ft = 1.420 fm = 1 fm 2.52 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288515 00001(0226000467030001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: Uncharted (11324) wreck discovered with MBES. Wreck is 8.2 meters in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288515 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 8ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 1 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 2.596 m WATLEV - 3:always under water/submerged
Page 38 H12389 Feature Report 2 - New Features
Office Notes
New wreck verified. Charted wreck cannot be displayed at chart scale due to close proximity to shoaler, unsurveyed charted depth.
Page 39 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.9.1
Page 40 H12389 Feature Report 2 - New Features
2.10) 4.9m WRECK
Survey Summary
Survey Position: 29° 17' 11.4" N, 094° 50' 39.9" W Least Depth: 4.91 m (= 16.12 ft = 2.687 fm = 2 fm 4.12 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288512 00001(0226000467000001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted wreck found with MBES. Length is 5.6 m.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288512 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 16ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ½fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.914 m WATLEV - 3:always under water/submerged
Page 41 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 42 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.10.1
Page 43 H12389 Feature Report 2 - New Features
2.11) 7.6m WRECK
Survey Summary
Survey Position: 29° 17' 07.6" N, 094° 50' 16.2" W Least Depth: 7.68 m (= 25.20 ft = 4.199 fm = 4 fm 1.20 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288522 00001(02260004670A0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck discovered with MBES. Wreck is approx 5m in length.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288522 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 25ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 4 ¼fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 7.680 m WATLEV - 3:always under water/submerged
Page 44 H12389 Feature Report 2 - New Features
Office Notes
Feature verified. Could not determine if feature is wreck. Do not chart feature due to proximity to shoaler wreck.
Page 45 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.11.1
Page 46 H12389 Feature Report 2 - New Features
2.12) 4.9m WRECK
Survey Summary
Survey Position: 29° 17' 07.8" N, 094° 50' 13.7" W Least Depth: 4.90 m (= 16.08 ft = 2.679 fm = 2 fm 4.08 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288526 00001(02260004670E0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck found with MBES has length of 10 meters.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288526 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 16ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 2 ½fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 4.900 m WATLEV - 3:always under water/submerged
Page 47 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 48 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.12.1
Page 49 H12389 Feature Report 2 - New Features
2.13) 5.7m WRECK
Survey Summary
Survey Position: 29° 16' 57.3" N, 094° 50' 08.3" W Least Depth: 5.76 m (= 18.90 ft = 3.151 fm = 3 fm 0.90 ft) TPU (±1.96σ): THU (TPEh) [None] ; TVU (TPEv) [None] Timestamp: 2014-252.00:00:00.000 (09/09/2014) Dataset: H12389_Feature_Report.000 FOID: US 0000288527 00001(02260004670F0001)
Charts Affected: 11324_1, 11324_2, 11322_1, 11323_1, 11330_1, 1117A_1, 11300_1, 411_1
Remarks: WRECKS/remrks: New, uncharted (11324) wreck found with MBES has length of 5 meters.
Feature Correlation
Source Feature Range Azimuth Status H12389_Feature_Report.000 US 0000288527 00001 0.00 000.0 Primary
Hydrographer Recommendations
[None]
Cartographically-Rounded Depth (Affected Charts): 19ft (11324_1, 11324_2, 11322_1, 11323_1, 11330_1) 3fm (1117A_1, 11300_1, 411_1)
S-57 Data
Geo object 1: Wreck (WRECKS) Attributes: CATWRK - 2:dangerous wreck QUASOU - 6:least depth known SORDAT - 20140909 SORIND - US,US,graph,H12389 TECSOU - 3:found by multi-beam VALSOU - 5.762 m WATLEV - 3:always under water/submerged
Page 50 H12389 Feature Report 2 - New Features
Office Notes
Chart new wreck.
Page 51 H12389 Feature Report 2 - New Features
Feature Images
Figure 2.13.1
Page 52 APPROVAL PAGE
H12389
Data meet or exceed current specifications as certified by the OCS survey acceptance review process. Descriptive Report and survey data except where noted are adequate to supersede prior surveys and nautical charts in the common area.
The following products will be sent to NGDC for archive - H12389_DR.pdf - Collection of depth varied resolution BAGS - Processed survey data and records - H12389_GeoImage.pdf
The survey evaluation and verification has been conducted according current OCS Specifications.
Approved:______Peter Holmberg Cartographic Team Lead, Pacific Hydrographic Branch
The survey has been approved for dissemination and usage of updating NOAA’s suite of nautical charts.
Approved:______CDR Benjamin K. Evans, NOAA Chief, Pacific Hydrographic Branch