Chapter 5 Short Range Aids to Navigation
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Aids to Navigation Manual – Administration, COMDTINST M16500.7A
Aids to Navigation Manual Administration 02 MAR 2005 COMDTINST M16500.7A Commandant US Coast Guard Stop 7418 United States Coast Guard 2703 Martin Luther King Jr Ave, SE Washington DC 20593-7418 Staff Symbol: CG-NAV-1 Phone: (202) 372-1551 Fax: (202) 372-8358 COMDTCHANGENOTE 16500 23 FEB 2015 COMMANDANT CHANGE NOTICE 16500 Subj: CH-2 TO AIDS TO NAVIGATION MANUAL – ADMINISTRATION COMDTINST M16500.7A 1. PURPOSE. To provide changes to the Coast Guard’s Aids to Navigation Manual – Administration, COMDTINST M16500.7A. 2. ACTION. All Coast Guard unit commanders, commanding officers, officers-in-charge, deputy/assistant commandants, and chiefs of headquarters staff elements shall comply with the provisions of this Commandant Change Notice. Internet release is authorized. 3. DIRECTIVES AFFECTED. With the incorporation of this Commandant Change Notice, the Coast Guard’s Aids to Navigation Manual – Administration, COMDTINST M16500.7A is updated. 4. DISCLAIMER. This guidance is not a substitute for applicable legal requirements, nor is it itself a rule. It is intended to provide operational guidance for Coast Guard personnel and is not intended to nor does it impose legally-binding requirements on any party outside the Coast Guard. 5. MAJOR CHANGES. The Commandant Change Notice announces the Coast Guard will no longer print copies of the Coast Guard Light Lists. The following Coast Guard Light Lists will remain available on the Coast Guard Navigation Center (NAVCEN) website at http://www.navcen.uscg.gov/?pageName=lightLists. Light List Vol. 1- Atlantic Coast from St. Croix River, ME to Shrewsbury River, NJ, COMDTPUB P16502.1 Light List Vol. -
Celestial Navigation Tutorial
NavSoft’s CELESTIAL NAVIGATION TUTORIAL Contents Using a Sextant Altitude 2 The Concept Celestial Navigation Position Lines 3 Sight Calculations and Obtaining a Position 6 Correcting a Sextant Altitude Calculating the Bearing and Distance ABC and Sight Reduction Tables Obtaining a Position Line Combining Position Lines Corrections 10 Index Error Dip Refraction Temperature and Pressure Corrections to Refraction Semi Diameter Augmentation of the Moon’s Semi-Diameter Parallax Reduction of the Moon’s Horizontal Parallax Examples Nautical Almanac Information 14 GHA & LHA Declination Examples Simplifications and Accuracy Methods for Calculating a Position 17 Plane Sailing Mercator Sailing Celestial Navigation and Spherical Trigonometry 19 The PZX Triangle Spherical Formulae Napier’s Rules The Concept of Using a Sextant Altitude Using the altitude of a celestial body is similar to using the altitude of a lighthouse or similar object of known height, to obtain a distance. One object or body provides a distance but the observer can be anywhere on a circle of that radius away from the object. At least two distances/ circles are necessary for a position. (Three avoids ambiguity.) In practice, only that part of the circle near an assumed position would be drawn. Using a Sextant for Celestial Navigation After a few corrections, a sextant gives the true distance of a body if measured on an imaginary sphere surrounding the earth. Using a Nautical Almanac to find the position of the body, the body’s position could be plotted on an appropriate chart and then a circle of the correct radius drawn around it. In practice the circles are usually thousands of miles in radius therefore distances are calculated and compared with an estimate. -
Chapter 19 the Almanacs
CHAPTER 19 THE ALMANACS PURPOSE OF ALMANACS 1900. Introduction The Air Almanac was originally intended for air navigators, but is used today mostly by a segment of the Celestial navigation requires accurate predictions of the maritime community. In general, the information is similar to geographic positions of the celestial bodies observed. These the Nautical Almanac, but is given to a precision of 1' of arc predictions are available from three almanacs published and 1 second of time, at intervals of 10 minutes (values for annually by the United States Naval Observatory and H. M. the Sun and Aries are given to a precision of 0.1'). This Nautical Almanac Office, Royal Greenwich Observatory. publication is suitable for ordinary navigation at sea, but The Astronomical Almanac precisely tabulates celestial lacks the precision of the Nautical Almanac, and provides data for the exacting requirements found in several scientific GHA and declination for only the 57 commonly used fields. Its precision is far greater than that required by navigation stars. celestial navigation. Even if the Astronomical Almanac is The Multi-Year Interactive Computer Almanac used for celestial navigation, it will not necessarily result in (MICA) is a computerized almanac produced by the U.S. more accurate fixes due to the limitations of other aspects of Naval Observatory. This and other web-based calculators are the celestial navigation process. available from: http://aa.usno.navy.mil. The Navy’s The Nautical Almanac contains the astronomical STELLA program, found aboard all seagoing naval vessels, information specifically needed by marine navigators. contains an interactive almanac as well. -
Aids to Navigation Manual – Technical, Comdtinst M16500.3A
Commandant 2100 Second St, SW Stop 7901 United States Coast Guard Washington DC 20593-7901 Staff Symbol: CG-432 Phone: (202) 475-5629 FAX: (202) 475-5959 Email: [email protected] COMDTNOTE 16500 APR 06 2010 COMMANDANT NOTICE 16500 CANCELLED: APR 06 2011 Subj: CH-7 TO AIDS TO NAVIGATION MANUAL – TECHNICAL, COMDTINST M16500.3A 1. PURPOSE. This Notice promulgates changes to the Aids to Navigation Manual, Technical COMDTINST M16500.3A. 2. ACTION. All Coast Guard unit commanders, commanding officers, officers-in-charge, deputy/assistant commandants, and chiefs of headquarters staff elements shall comply with the provisions of this Manual. Internet release is authorized. 3. PROCEDURES. a. The change consists of 64 pages. Remove & insert the following pages: Remove Insert 2-11 and 2-12 2-11 and 2-12 2-35 and 2-36 2-35 and 2-36 2-169 and 2-170 2-169 and 2-170 Chapter 6 Chapter 6 9-13 and 9-14 9-13 and 9-14 9-73 thru 9-78 9-73 thru 9-78 9-81 thru 9-84 9-81 thru 9-84 9-89 and 9-90 9-89 and 9-90 b. Units that have not received COMDTINST M16500.3A, Aids to Navigation Manual – Technical, but have received this change cannot requisition a copy of the manual as it is out of print. The manual is available through the CG directives system on-line and will be reprinted with all changes 1 through 7 included. DISTRIBUTION – SDL No. 155 a b c d e f g h i j k l m n o p q r s t u v w x y z A 2 2 2 2 2 2 B 3 2 10 1 C 2 1 2 D 1 E F G H NON-STANDARD DISTRIBUTION: C:i Stations Burlington, St. -
New Zealand's System of Buoys and Beacons Booklet
NEW ZEALAND’S SYSTEM OF BUOYS AND BEACONS Disclaimer: All care and diligence has been used in extracting, analysing and compiling this information, however, Maritime New Zealand gives no warranty that the information provided is without error. Copyright Maritime New Zealand 2008 Parts of this publication may be reproduced provided acknowledgement is made to this publication and Maritime New Zealand as the source. ISBN 0-478-18815-3 CONTENTS 3 Introduction 4 System of Buoyage and Beaconage 5 Description of System 6 Rules for Marks 7 Lateral Marks 9 Cardinal Marks 12 Isolated Danger Marks 13 Safe Water Marks 14 Special Marks 15 New Dangers 1 16 Miscellaneous 17 Offshore Oil/Gas Rigs and Platforms 18 Marine Farms 18 Reflective Strips 19 Oceanographic Stations 20 Standard Submarine Cable/Pipeline Marker Beacon 21 Bridges and Overhead Power Lines 22 Overhead Power Lines 22 Safe Clearance Signs 23 Safe Clearance Diagram 24 Light Characteristics INTRODUCTION This book explains the buoyage and beaconage system in New Zealand waters. It describes the recommended requirements for aids to navigation in harbours and their approach channels, methods of marking and lighting, and also describes the requirements for oceanographic stations that may be established around our seaboard. Details of standard markings for Marine Farms, Offshore Isolated Dangers, Oil Rigs and other miscellaneous markings are also included. All members of the maritime community should find this 3 book useful, particularly mariners, Regional Councils, Port Companies, and those studying for nautical examinations. SYSTEM OF BUOYAGE AND BEACONAGE The waters of New Zealand and adjacent islands are marked for safe navigation using the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) System ‘A’ Maritime Buoyage System. -
MLETP) Training Materials: Maritime Operations, 2010-2013
Description of document: Federal Law Enforcement Training Centers (FLETC) Marine Law Enforcement Training Program (MLETP) training materials: maritime operations, 2010-2013 Requested date: 04-September-2013 Released date: 12-November-2013 Posted date: 04-September-2017 Source of document: Federal Law Enforcement Training Center Freedom of Information/Privacy Office Building 681, Suite 187B Glynco, GA 31524 Fax: (912) 267-3113 E-mail: [email protected] FOIA Online Request Form The governmentattic.org web site (“the site”) is noncommercial and free to the public. The site and materials made available on the site, such as this file, are for reference only. The governmentattic.org web site and its principals have made every effort to make this information as complete and as accurate as possible, however, there may be mistakes and omissions, both typographical and in content. The governmentattic.org web site and its principals shall have neither liability nor responsibility to any person or entity with respect to any loss or damage caused, or alleged to have been caused, directly or indirectly, by the information provided on the governmentattic.org web site or in this file. The public records published on the site were obtained from government agencies using proper legal channels. Each document is identified as to the source. Any concerns about the contents of the site should be directed to the agency originating the document in question. GovernmentAttic.org is not responsible for the contents of documents published on the website. Federal Law EnforcemenJ Training Center U. S. Department of Homeland Security 1131 Chapel Crossing Road Glynco, Georgia 31524 November 12, 2013 404-142 (ITD/IBM) Re: FOIA 13-110 This is the final response to your Freedom oflnformation Act (FOlA) request to the Federal Law Enforcement Training Centers (FLETC), dated September 14, 2013, and received by this office on said date. -
1 CSCPWG8-INF5 Informational Paper for Consideration By
CSCPWG8-INF5 Informational Paper for Consideration by CSCPWG New Presentation of Q130.1 and Q130.3 in the U.S. Chart No. 1, Edition 12 Submitted by: USA (NOAA) Executive Summary: The US has modified the presentation of the IALA regions and the in-context lateral mark graphic from INT1 Q130.1, as well as the cardinal marks graphic from Q130.3 for use in Edition 12 of the US Chart No. 1. This information is being provided to CSCPWG and its INT1 sub-working group for their consideration for possible improvements to INT1. Related Documents: INT1, US Chart No. 1 Related Projects: Standardization and Improvement of INT1 Introduction / Background The United States has just released its first update of its Chart No. 1, Nautical Chart Symbols, Abbreviations and Terms since 1997; this will be Edition 11 of the U.S. Chart No. 1. Development of a subsequent update, which will show both paper chart (S-4) symbology and ECDIS (S-52) symbology side-by-side in a single document, is currently underway; this will be Edition 12. Edition 12 is being created in a landscape format to make room for the additional columns needed to include the ECDIS symbols. The landscape format has also enabled greater flexibility in how some sections of Chart No.1 (or INT1) can be presented. The graphics presented in Q130.1 and 130.3 have been modified to take advantage of the extra horizontal space, although some of the changes described here could easily be adopted for use within a portrait formatted document too. -
Chapter 6 Nautical Publications
CHAPTER 6 NAUTICAL PUBLICATIONS INTRODUCTION 600. Publications supply a ship’s chart and publication library. On-line publications produced by the U.S. government are The navigator uses many textual information sources available on the Web. to plan and conduct a voyage. These sources include notices to mariners, summary of corrections, sailing directions, 601. Maintenance and Carriage Requirements of light lists, tide tables, sight reduction tables, and almanacs. Navigation Publications While it is still possible to obtain hard-copy or printed nautical publications, increasingly these texts Vessels may maintain the navigation publications are found online or in other digital formats, including required by Title 33 of the Code of Federal Regulations Compact Disc-Read Only Memory (CD-ROM's) or Parts 161.4, 164.33, and 164.72 and SOLAS Chapter V Digital Versatile Disc (DVD's). Digital publications are Regulation 27 in electronic format provided that they are much less expensive than printed publications to repro- derived from the original source, are currently duce and distribute, and online publications have no corrected/up-to-date, and are readily accessible on the reproduction costs at all for the producer, and only mi- vessel's bridge by the crew. Adequate independent back-up nor costs to the user. Also, one DVD can hold entire arrangements shall be provided in case of libraries of information, making both distribution and electronic/technical failure. Such arrangements include: a on-board storage much easier. The advantages of electronic publications over second computer, CD, or portable mass storage device hard-copy go beyond cost savings. They can be updated readily displayable to the navigation watch, or printed easier and more often, making it possible for mariners paper copies. -
Historically Famous Lighthouses
HISTORICALLY FAMOUS LIGHTHOUSES CG-232 CONTENTS Foreword ALASKA Cape Sarichef Lighthouse, Unimak Island Cape Spencer Lighthouse Scotch Cap Lighthouse, Unimak Island CALIFORNIA Farallon Lighthouse Mile Rocks Lighthouse Pigeon Point Lighthouse St. George Reef Lighthouse Trinidad Head Lighthouse CONNECTICUT New London Harbor Lighthouse DELAWARE Cape Henlopen Lighthouse Fenwick Island Lighthouse FLORIDA American Shoal Lighthouse Cape Florida Lighthouse Cape San Blas Lighthouse GEORGIA Tybee Lighthouse, Tybee Island, Savannah River HAWAII Kilauea Point Lighthouse Makapuu Point Lighthouse. LOUISIANA Timbalier Lighthouse MAINE Boon Island Lighthouse Cape Elizabeth Lighthouse Dice Head Lighthouse Portland Head Lighthouse Saddleback Ledge Lighthouse MASSACHUSETTS Boston Lighthouse, Little Brewster Island Brant Point Lighthouse Buzzards Bay Lighthouse Cape Ann Lighthouse, Thatcher’s Island. Dumpling Rock Lighthouse, New Bedford Harbor Eastern Point Lighthouse Minots Ledge Lighthouse Nantucket (Great Point) Lighthouse Newburyport Harbor Lighthouse, Plum Island. Plymouth (Gurnet) Lighthouse MICHIGAN Little Sable Lighthouse Spectacle Reef Lighthouse Standard Rock Lighthouse, Lake Superior MINNESOTA Split Rock Lighthouse NEW HAMPSHIRE Isle of Shoals Lighthouse Portsmouth Harbor Lighthouse NEW JERSEY Navesink Lighthouse Sandy Hook Lighthouse NEW YORK Crown Point Memorial, Lake Champlain Portland Harbor (Barcelona) Lighthouse, Lake Erie Race Rock Lighthouse NORTH CAROLINA Cape Fear Lighthouse "Bald Head Light’ Cape Hatteras Lighthouse Cape Lookout Lighthouse. Ocracoke Lighthouse.. OREGON Tillamook Rock Lighthouse... RHODE ISLAND Beavertail Lighthouse. Prudence Island Lighthouse SOUTH CAROLINA Charleston Lighthouse, Morris Island TEXAS Point Isabel Lighthouse VIRGINIA Cape Charles Lighthouse Cape Henry Lighthouse WASHINGTON Cape Flattery Lighthouse Foreword Under the supervision of the United States Coast Guard, there is only one manned lighthouses in the entire nation. There are hundreds of other lights of varied description that are operated automatically. -
6.- Methods for Latitude and Longitude Measurement
Chapter 6 Copyright © 1997-2004 Henning Umland All Rights Reserved Methods for Latitude and Longitude Measurement Latitude by Polaris The observed altitude of a star being vertically above the geographic north pole would be numerically equal to the latitude of the observer ( Fig. 6-1 ). This is nearly the case with the pole star (Polaris). However, since there is a measurable angular distance between Polaris and the polar axis of the earth (presently ca. 1°), the altitude of Polaris is a function of the local hour angle. The altitude of Polaris is also affected by nutation. To obtain the accurate latitude, several corrections have to be applied: = − ° + + + Lat Ho 1 a0 a1 a2 The corrections a0, a1, and a2 depend on LHA Aries , the observer's estimated latitude, and the number of the month. They are given in the Polaris Tables of the Nautical Almanac [12]. To extract the data, the observer has to know his approximate position and the approximate time. When using a computer almanac instead of the N. A., we can calculate Lat with the following simple procedure. Lat E is our estimated latitude, Dec is the declination of Polaris, and t is the meridian angle of Polaris (calculated from GHA and our estimated longitude). Hc is the computed altitude, Ho is the observed altitude (see chapter 4). = ( ⋅ + ⋅ ⋅ ) Hc arcsin sin Lat E sin Dec cos Lat E cos Dec cos t ∆ H = Ho − Hc Adding the altitude difference, ∆H, to the estimated latitude, we obtain the improved latitude: ≈ + ∆ Lat Lat E H The error of Lat is smaller than 0.1' when Lat E is smaller than 70° and when the error of Lat E is smaller than 2°, provided the exact longitude is known. -
Ancient Pharology from Google Earth, of a Beautiful Mystery to My Grown up Son and Daughter,Yed and Cristiana Su
Ancient Pharology from Google earth, of a Beautiful Mystery to my grown up son and daughter,Yed and Cristiana Su The emplacement of some of the most ancient lighthouses known, tentatively explained Beauty and lighthouses Lighthouses are beautiful, more often than not, and, undoubtedly, the seafront context in which we expect to find them is quite inspiring. Arts and literature linger since long time on them, some have become tourist resorts, people even tour dozens of distant lighthouses just to see them, or “collect” them, as notably radio-hams do. Italian radio ham diplomas. WAIL, “worked all Italian lighthouses” Fbook group- one sets up a station, many try to confirm a radio contact Lighthouses' society exist in the anglophone world in particular, often populated not just by passionates, but by former, and now ever more rare figures: present lighthouse wardens. Dr. Trethaway, one of the most noted pharologists, discovered he is the descendant of a lighthouse keeper family as he developed his skills and passion. I am indebted to his site for a number of illustrations here, as well as for a few critical concepts. Today, most lighthouses are unmanned. Chania lighthouse Crete, the base is Venetian, end of XVI century, the tower Egyptian, early XIX. Kjeungskjær lighthouse, Ørland, Norway. Torre de Hercules, Galicia, Spain. A splendid Roman Lighthouse Enoshima, Japan, recently renovated Peggy's Cove, Halifax, Nova Scotia, Canada Types of Lighthouses and their emplacement A modern lighthouse equivalent uses radio waves rather than light, and is usually quite uncute. Cape Peloro navigational radio beacon, Sicily, Messina straits: ugly. -
Navigational Duties
CHAPTER 9 NAVIGATIONAL DUTIES Navigation is the art or science of determining the materials either in a ship itself or by magnetic position of a ship or aircraft and directing that ship or materials brought near the compass. aircraft from one position to another. It can be The gyrocompass, on the other hand, points to true regarded as an art because its application involves the north by operation of the gyroscopic principle. It may, exercise of special skills and fine techniques, which however, have a slight mechanical error of a degree or can be perfected only by experience and careful two, which is known and for which due allowance is practice. On the other hand, navigation can be made. regarded as a science inasmuch as it is knowledge dealing with a body of facts and truths systematically Magnetic Compass arranged and showing the operation of general laws. Navigation has been practiced for thousands of years; The ship’s magnetic compasses are named or however, modern methods date from the 18th century classed according to their use. invention of the chronometer, a precision timepiece. As a Signalman, you may be required to assist the The standard compass is the magnetic compass navigator by taking bearings, using the bearing circle used by the navigator as a standard for checking other or alidade. You may assist the officer of the deck compasses on the ship. It is so located that it is least (OOD) by sounding whistle signals and by being alert affected by the internal magnetism of the ship. to aids to navigation.