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

Damen Shiprepair Oranjewerf receives ISO 9001:2015, ISO 14001:2015 and SCC** 2008/5.1 certifications

Damen Shiprepair Oranjewerf (DSO) has added three new certifications to its existing accreditations.... Read more

Stewart Marine closes deal for Neptune Marine EuroCarrier 2611

UK-based marine services company Stewart Marine has contracted Neptune Marine to build a new EuroCar... Read more

SP Load Cells Integral to Floating Crane Software Package

Polish marine electronics integration specialist Navinord has installed a state-of-the-art software ... Read more

Damen Shipyards Galati hands over 74-metre Fishery Research Vessel to Angolan Government

Damen Shipyards Galati has made provisional delivery of the 74-metre Fishery Research Vessel Baía Fa... Read more

Damen Maaskant Shipyards Stellendam celebrates 70 years and bids farewell to director Frits van Dongen

On Saturday 13 October a party was held at Damen Maaskant Shipyards Stellendam (DMSS) to mark three ... Read more

View all