London Club Warns of Over-Reliance on GPS

Tuesday, October 05, 2010

The London P&I Club said a recent casualty involving a containership serves as a timely reminder of the consequences of failing to check navigation charts for information about corrections that need to be applied to satellite-derived positions.
In the latest issue of its StopLoss Bulletin, the Club refers to an incident in which a containership grounded as a result of total reliance on GPS, coupled with a failure to recognise that a significant correction had to be applied to GPS positions before they were plotted on the chart. During a coastal passage, the ship ran aground after a navigating officer commenced a significant alteration of course about half a mile before he reached the intended alter-course position.
Investigations suggested that the officer was using no means other than GPS to navigate and, even though the ship was on a regular schedule, he was wholly unaware that a significant correction had to be applied before GPS positions could be plotted onto many of the charts used in the service. The Club says a more detailed passage plan would have alerted the inexperienced officer to the danger and required him to cross-check his position by more than one method.
The Club emphasises that seafarers must be aware that, on many charts still in use, a correction has to be applied to satellite-derived positions before the position is plotted on the chart. It adds that navigating officers should always check the charts for information about corrections that need to be applied to satellite-derived positions when preparing a passage plan and alert the navigators to any existing corrections which are required before positions are plotted on the individual charts.

Maritime Reporter September 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds


Danelec Marine Expands in Brazil

Press release - Danelec Marine has announced that it is expanding its presence in Brazil by naming Telnav Telecomuniçacões Navais a Certified Service Center. With

Choi-Wan to hit SE Japan

Tropical Storm Choi-Wan, located near 21N/158E yesterday (4 October), is forecast to move WNW-NNW over the next days and intensify to a very large typhoon. A large area of HIGH to VERY HIGH sea,

DP World Plans Big for the Panama Canal

DP World is expanding its container terminal at Port of Caucedo following the expansion of the Panama Canal to accommodate larger container ships, reports ASC.

Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Offshore Oil Pipelines Port Authority Ship Electronics Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1163 sec (9 req/sec)