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

Navigation

HMAS Canberra Initial Operational Capability

The Royal Australian Navy’s Amphibious Ship, HMAS Canberra, has completed a graduated operational test and trials program to achieve a key milestone towards Initial Operating Capability.

World’s Quickest Trip Through Northern Sea Route

Chinese sailor Guo Chuan intends to make it world’s quickest Northern Sea Route trip from Murmansk to the Bering Strait in 14 days without engine power. His

MN 100: ContainerTug B.V.

The Company: ContainerTug B.V. is a specialized Dutch naval design engineering and construction company with a strong focus on developing workboats and the evaluation

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Offshore Oil Pod Propulsion Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction Winch
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: 0.2737 sec (4 req/sec)