Errata 001 & 002 Mariner’s Guide to Preventing Collisions

NL 41

Taken from GlobalMET Newsletter 41, pages 6 & 10:

Errata 001.Table on pg 10 flipped and printed in error, see correct table below.


Rule 8(f) ‘A vessel required not to impede the passage or safe passage of another vessel’ A vessel the passage of which is not to be impeded’.
i i) Shall ‘take early action’ so as ‘not to impede’ or keep clear and ‘allow sufficient sea-room’, or maintain sufficient ‘safe distance’ from the path ‘of the other vessel’.ii) Should not allow ‘risk of collision’ to develop.iii) Action shall be initiated whenever required by Rules 9, 10 and 18, irrespective whether ‘risk of collision exists’ or not.iv) Vessel has full freedom of action. Keep watch and keep observing, no action required at this stage.
ii i) If the situation develops ‘to involve risk of collision’ with the other vessel, obligation to keep clear as per subparagraph ‘i’ remains fully applicable and she shall ‘take action to avoid collision’ in accordance with the Rules of Part ‘B’.ii) ‘Keep her course and speed’ status cannot be applied, even if these vessels are ‘in sight of one another’.
iii i) If the situation develops ‘to involve risk of collision’ with ‘a vessel required not to impede the passage or safe passage’, ‘take action to avoid collision’.ii) Actions shall ‘comply with the Rules of this part’ or Part ‘B’, this may be considered similar to ‘action by stand-on vessel’ as per Rule 17.


Errata 002. Pg 6 A Mariner’s Guide to Preventing Collisions. Several corrections required, article reprinted with corrections in its entirety.


Preventing Collisions

A Mariner’s Guide to Preventing Collisions

review by

Rod Short

This book is a major effort by a man who clearly has the expertise to make a major contribution to the safety of life and property at sea.

Capt Chhabra’s book covers the International Regulations for Preventing Collisions in 225 pages, then goes on to cover the IALA Buoyage System, Basic Ship Handling – for Preventing Risk of Collision, Trend Analysis of Maritime Collisions, Leadership and Management in Preventing Collisions, and the STCW Regulation Code A-VIII/2.  He concludes with 43 pages of Self Assessment Tests and Answers and then the Bahamas Maritime Authority Bulletin on The Use of ARPA RADAR for Collision Avoidance, then provides the Marshall Island Marine Safety Notice on Radar for Collision Avoidance, the Singapore MPA Shipping Circular on Caution on the Use of VHF in Collision Avoidance, and pictures of well-known accidents.

First published in May 2011, it was last revised in August 2014.  Primarily designed as a self-study guide, the book uses distance learning methodologies to help achieve a fuller understanding of a subject which is often difficult.  More mature level study has been placed in boxes, so that they may be skipped until adequate sea experience is gained.

Students tend to learn the COLREGS by rote and then have difficulty in their application when on the bridge. The regulations are at times contentious and the watch-keepers on ships at risk of colliding with one another may have different understandings of what is required.  The author has attempted to provide a full explanation for practical application.

As Capt Chhabra says. ‘the learning involves tasks, analysis of several cases amalgamated with watch-keeping requirements from STCW and SOLAS conventions, quiz and self-assessments, linked to basic ship handing principles’ to assist clarification of core concepts and fundamentals.

In writing this book Capt Chhabra has undertaken a large and difficult task and is to be congratulated on the outcome.  He has made a significant contribution to assisting the watch-keeper develop an essential understanding of the rules for preventing collisions.

Published by Marex Media, Mumbai, India:

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