Arctic Navigation Norvald Kjerstad Professor, Nautical Science Aalesund University College N 62°28’19’’ – E 006°14’06’’ [email protected] 2012 PNT – Challenges and Opportunities Symposium Stanford, 13 November 2012 Norvald©Kjerstad My presentation: -! Geography and some challenges -! High latitude shipping activity -! Survey and chart quality -! Navigation systems -! Future prospects and climate change 2 Norvald©Kjerstad A random snapshot of activity in ice infested waters (from AISSat-1) 3 Norvald©Kjerstad Passengers visiting Svalbard The trend is similar in Antarctica, Greenland, Russia and Canada Growth in shipping activity 50000 45000 demands implementation 40000 of new international 35000 regimes 30000 25000 !!Polar Code 20000 15000 !!Mandatory IMO guidelines 10000 5000 0 2000 2001 2002 2003 2004 2005 2006 2007 Total 25368 29991 25663 29974 32590 44298 44684 48448 Boats 29 25 22 28 28 34 29 30 Passenger vessels conflict – attraction vs. safety 4 Norvald©Kjerstad When technology and humans meets the harsh and remote environment ----- problems occurs 1912 1989 23.11.2007 5 Norvald©Kjerstad Northern Passages – shortcuts between Atlantic and Pacific Waters Northeast-Passage «Open» since 1991 6 Norvald©Kjerstad 2011 – a breakthrough for the Northeast passage 17th of July 2012 north of New Siberian Islands 7 Norvald©Kjerstad 8 Norvald©Kjerstad Demanding season extension This is what you see in the winter time (only 1month after min. ice coverage) 9 Norvald©Kjerstad Radar can be useful to avoid ice ridges Close to the North Pole Ridges can easily be seen Much ice-clutter close to the ship Blind sector 10 Norvald©Kjerstad Navigation Modes of navigation Positioning / Dynamic Positioning (DP) ….. Different needs and requirements •! Accuracy •! Reliability •! Integrity •! Redundancy 11 Norvald©Kjerstad Skyplot of GPS and GLONASS at 75°N (24hrs) GNSS performance •! GPS have no significant latitude limitations •! GLONASS more inclined orbits (64.8 vs. 55°). Improves performance at high latitudes. •! Needs augmentation for integrity •! Galileo og BeiDou will improve integrity, geometry and add SAR functionality •! Signal strength normaly good, but ice on the antenna and auroral activity can reduce performance GPS-HDOP: 24hrs sailing along the Northeast Passage 12 Norvald©Kjerstad Limited DGPS and SBAS coverage Main research area at N 78°50’ Limit for sat. 120 (15.5°E) Route Polar Circle Expected coverage of EGNOS satellites 13 Norvald©Kjerstad Skyplot from N 71°29’ – E 015°20’ Satellites without EGNOS correction Satellites with EGNOS correction EGNOS sat. 124 14 Kongsberg DPS-132 receiver (GPS L1+L2+SBAS) Norvald©Kjerstad DQI – timeplot from the Barents Sea (sat. 124) (Software: Kagstrom NMEA-suite / www.kagstrom.no ) Period with correction (DQI > 1). Period without correction (DQI = 1). Number of sat. are low. Number of sat. are high. HDOP is high HDOP is low Satellites HDOP N 74° N 76°40’ DQI DQI = 1 13 hrs 15 Norvald©Kjerstad Skyplot from N 78°49’ – W 004°08’ EGNOS sat. 120 (Elevation is 2.2°) 16 Norvald©Kjerstad !"#$%"$&''$%()$*"'+,$-+./$ •!$:&)2$A&'()$B9:C$ •!$@'&8('$74712+$*&&)6.-(/&-$ WAAS MSAS •!$%&'()$*&++,-.*(/&-0$ $$$.-123).145$(-6$.*2$6(1($ !"#$ $$$6.71).8,/&-$-22626$ 5$9).6.,+$&)$:;<$ CWAAS SNAS? 5$=;<$>:&'-.4(?$5$=;<$>:&'-.4(?$ SDCM? EGNOS 17 Norvald©Kjerstad All approved compass systems Magnetic have limitations at high latitudes Error = Gyro Latitude (!) approaches 90° !!Cos ! approaches 0 !!Error approaches ! Remember !! Errors will propagate to radar, ECDIS, direction-finders, AIS, SatCom, TV, etc. FOG 18 Norvald©Kjerstad Satellite compass – have no latitude limitations (but still not approved by IMO) Ref. recommendations in IMO guidelines for ships operating in polar waters. Display 19 Norvald©Kjerstad Large and shallow shelf areas. What about the chart quality? The seachart indicated 300m (Hinlopen, Svalbard) 20 Norvald©Kjerstad Navigation in front of Former unauthoriced chart glaciers is dangerous due to limited survey and varying depths Large datum shifts are common New survey, 2007 Not surveyed New location of glacier 21 Norvald©Kjerstad MV Nordkapp grounded in Antarctica Margins between ” ingenuous” grounding and disaster are sharp (ref. Exxon Valdez) 22 Norvald©Kjerstad 2012 – All time low A paradox: Equivalent to year 2040-50 predictions Reduced ice coverage can contribute to more ice-navigation •! Cruise / Expeditions •! Oil and gas •! Mining •! Research •! Fishing Gradual change from thick multi-year ice to thin first-year ice 23 Norvald©Kjerstad “Trans Polar Highway “– a future perspective? Bering Approx. 1000nm shorter NW •! No depth limitations NE •! Only international waters Chinese icebreaker Xue Long tested the Trans Polar route over the North Pole (August-Sept.12) *) Remember – shortest route is rarely the quickest 24 Norvald©Kjerstad Obvious need for: Concluding remarks •! Better competence •! Stricter regulations (national and international) •! Improved infrastructure and presence 25 Norvald©Kjerstad .