Monthly Archives: September 2015

OOW weekly Answer-When can the OOW use the vessel’s engines?


Question: When can you as officer of the watch use the vessel’s engines?

Answer: The vessel’s engines are at your disposal as  the OOW, and there should be no hesitation in using them in case of need. Where possible, timely notice of intended variations of engine speed should be given to the duty engineer.

Note– As OOW you should know the handling characteristics of the vessel, including its stopping distance, and should appreciate that other vessels may have different handling


A reminder- Rule 8 States:

(e) If necessary to avoid collision or allow more time to assess the situation, a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion.

For the “Really Handy Books To learn the collision regulations click here>

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Weekly COLREG question-When can the OOW use the vessel’s engines?


Before the second of the general Officer of the watch questions, here is a reminder of the words of the most important COLREG rule- Rule 5 Look out.

Rule 5-Lookout Every vessel shall at all times maintain a proper lookout by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and risk of collision

Question: When can you use the vessel’s engines as OOW?

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Officer of the watch prime responsibilities-The Answer


This week’s question was-What are the officer of the watch’s two prime responsibilities?

Answer: As the Master’s representative the OOW  is primarily responsible at all times for the safe navigation of the vessel and for complying with the International Regulations for Preventing Collisions At Sea.

-Safe Navigation
-Compliance with the COLREGS

Note-The OOW shall also be aware of the serious effects of pollution of the marine environment and shall take all possible precautions to prevent such pollution.


Rule 1 (a) These rules shall apply to all vessels upon the high seas and in all waters connected therewith navigable by sea going vessels.

The answer to the bonus question was that the vessel is Not Under Command.

Two balls=NUC.

For some Really Handy Kindle books to learn the Collision Regulations Click here


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The Officer of the watch prime responsibities-The question


After a brief break in the weekly COLREG questions, here they are again. In this series of posts however the COLREGS will be used to widen the subject outwards to general officer of the watch topics. So if you are studying for OOW exams-follow the blog.

The questions and answers are based on official publications, including the UK Mnotice -MGN 315 ‘The keeping a safe navigational watch on Merchant vessels’.  This Mnotice gives the UK’s guidance on complying with the requirements of STCW 95 and its code. A good read for those facing UK MCA examiners. For those of you working under other flags, have a check on line for similar guidance issued by the flag state.

So here is the first question-

Question: What are the officer of the watches two prime responsibilities?

And as a bonus question- What does the shapes being shown in the picture signify?

For the “Really Handy Books To learn the collision regulations click here>

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Weekly COLREG Question: What is a vessel-The answer


The word “vessel” includes every description of water craft, including non-displacement craft and seaplanes, used or capable of being used as a means of transportation on water.
Rule 3(a)

For some Really Handy Kindle books to learn the Collision Regulations Click here


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