Overview

This publication, which supersedes the 1st edition of 'Anchoring Systems and Procedures for Large Tankers' published in 1982, has been prepared by OCIMF to provide recommendations and guidance with the aim of promoting the safe operation and satisfactory performance of anchoring systems. As background to the development of this revised publication, concerns had been expressed by OCIMF member companies and others regarding an increase in the number of incidents involving anchor losses, windlass motor failures and associated personnel injuries. A review of third party anchoring incidents by an OCIMF member highlighted the following particular issues: - A number of incidents involving personnel injury and exposure of personnel to hazards during anchoring operations - The loss of anchors and cables in relatively benign environmental conditions - Incidents involving anchors dragging and the associated risk of damage to third parties and the involved vessel - Inability to recover an anchor using the ship's equipment - Reports of windlasses and drive motors being damaged due to excessive loads - Maintenance-related failures, i.e. failures caused by the lack of, or improper, maintenance. Common factors were identified that contributed to these operational incidents and equipment failures which included the following: - Poor seamanship and a general lack of appreciation of the impact of deteriorating environmental conditions on anchoring system loads while remaining anchored or attempting to recover anchors - Improper operation procedures leading to excessive loads being placed on windlasses while in gear - Failure of anchor and chain components including flukes, shanks, shackles, swivels and common links. As a result of the above review, it was agreed to revise and update the information contained in the original 1982 publication to assist in promulgating the lessons learnt from incidents, to provide improved information on anchoring practices and to recognise advances made in anchor systems in the intervening years. In particular, this publication highlights the design capabilities and limitations of anchoring systems and equipment with the aim of enhancing the safety of operations. The scope of this publication addresses anchoring systems and procedures that are applicable to all vessel types, irrespective of their size.

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9781856094047

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