Position-fixing intervals warning

Cargo ship Venus Cargo ship Venus aground in Castiglioncello, Livorno, Italy. Image courtesy of Jacopo Marello/ Wikimedia Commons
Industry Database

The London P&I Club say excessive onboard position-fixing intervals have been a contributory factor in some recent costly claims.

Excessive intervals can lead to the officer of the watch not detecting an error in navigation, explained the marine liability insurers’ loss prevention manager, Carl Durow. This can result in financial consequences if vessels or equipment are damaged.

Writing in the club’s latest StopLoss Bulletin, Mr Durow, said: “Club inspectors continue to note a lack of guidance in passage plans for the frequency of position-fixing necessary on individual legs of each voyage. This is often accompanied by excessive intervals in closer proximity to land on inbound voyage charts.

“Naturally, every passage is different, but it is recommended that the passage planning stage considers the appropriate fixing intervals and provides guidance to the officer of the watch.”

Grounded carrier

In one case, a laden bulk carrier grounded on a shoal, in circumstances where a previous inaccurate dead-reckoning plot was not detected in time.

Although there were several contributory factors to the grounding, the club says that, if a more appropriate position-fixing interval had been employed, it is likely that the discrepancy between the erroneous dead-reckoning plot and the ship’s subsequently plotted position would have been observed in time to correct the situation and execute the course alteration safely.

In another case, a ship proceeding in a ballasted condition between two small islands was unexpectedly affected by a strong current, and grounded half-a-mile to port of track before the next fix was plotted.

The ship was not employing parallel indexing, thus denying the officer of the watch two methods of detecting its heavy set to port.

By Rebecca Jeffrey

Latest Press Releases

Fast Ferry for Angolan Transport Ministry launched at Damen Shipyards Singapore

In a ceremony held at Damen Shipyards Singapore on 19 April, His Excellency, Dr. Augusto da Silva To... Read more

Innovative Damen RSD Tug 2513 kicks-off introduction tour in Italy

Always operating ‘bow first’ – a new paradigm in harbour towage Read more

Damen Dredging Equipment launches new DOP Dredger Series

Damen Dredging Equipment has launched a new DOP Dredger Series following the success of the DOP subm... Read more

Kazmortransflot LLP takes delivery of final Damen Shoalbuster 2709 for Caspian Sea operations

National Maritime Shipping Company Kazmortransflot LLP, a leader in transportation in the Caspian Se... Read more

P&O Cruises Ventura completes two-week docking at Damen Shiprepair Brest

The P&O Cruises Grand-class cruise ship Ventura has just completed a two-week docking at Damen Shipr... Read more

Damen shipping multiple pontoons to Rotterdam

Delivery ensures clients fast, cost effective delivery of stock pontoons Read more

View all