Wednesday, December 8, 2021

Tag: anchor

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Anchor loss prevention

The root cause of many groundings and collisions, lost anchors are among the top five reasons for claims costs. A rising number of anchor losses reported over the last several years prompted DNV GL, Gard and The Swedish Club to investigate this issue. Based on an analysis of damage cases involving anchor and anchor chain losses, the project partners have issued a presentation identifying the most frequent technical and operational causes, and some steps crews and operators can take to address them.

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DNV GL, Gard and The Swedish Club work together to help reduce anchor losses

The root cause of many groundings and collisions, lost anchors are among the top five reasons for claims costs. A rising number of anchor losses reported over the last several years prompted DNV GL, Gard and The Swedish Club to investigate this issue. Based on an analysis of damage cases involving anchor and anchor chain losses, the project partners have issued a presentation identifying the most frequent technical and operational causes, and some steps crews and operators can take to address them.

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Collision with vessel at anchor

The Swedish P&I Club has published its Monthly Safety for December 2015 regarding a collision with vessel at anchor. While Vessel A was raising its anchor before proceeding to the next port, the master decided to pass ahead of vessel B that was anchored for bunkering. Vessel B was on A’s starboard bow, A was maintaining a speed of 7 knots and a course of 122°. There was a strong southerly ebb tide of about 5 knots.

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USCG highlights important issues re anchor equipment

Focus on proper anchor use, stowage, and maintenance The U.S. Coast Guard (USCG) issued Safety Alert to remind vessel operators and company technical managers of the importance of proper ships anchor use, stowage, and maintenance.Anchor windlass brakes, riding pawls, and devils claws must be used as designed and periodically maintained to ensure effectiveness and safety. Its critical that proper supervision and inspection be conducted during and after anchoring, retrieving and storage evolutions, and maintenance activities. When installing a replacement anchor, it must meet the vessels technical specifications and fit correctly when housed.Recently, a freight ship was underway in 15 foot seas when the forepeak flood alarms activated. The crew investigated and discovered the starboard anchor had slipped 10-15 links, causing it to strike and puncture the hull. As a result, seawater flooded the bow thruster and emergency fire pump compartment. The casualty resulted in excess of $1 million in vessel damage and a months lost revenues while the vessel was out of service affecting repairs.During the repair period, it was discovered that the anchor windlass brake pad had worn down to 2- 3mm thickness. With only this amount of pad the fully applied brake could not achieve its designed holding ...

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