The Watch as a System, Not a Task List
The OOW is not merely executing a checklist — they are maintaining a continuous, dynamic assessment of the vessel's safety. MSN 1858 sets out the minimum certification and manning standards for watchkeeping on yachts, drawing from STCW Chapter VIII and the COLREGS. Understanding the principles means understanding why each element exists, not just that it does.
Keeping a Watch vs. Maintaining a Watch
Examiners will probe this distinction. Keeping a watch implies physical presence and compliance. Maintaining a watch implies active, ongoing situational awareness — monitoring position, traffic, weather, course, speed, and the overall safety picture simultaneously. The OOW is required to maintain, not merely keep.
Proper Lookout vs. Watchkeeping
These are related but legally distinct duties:
- Proper lookout (COLREGS Rule 5) — a continuous process using sight, hearing, and all available means to appraise the situation and risk of collision. It is a seamanship and collision-avoidance obligation.
- Watchkeeping — the broader responsibility to ensure the vessel is navigated safely, encompassing lookout, position monitoring, equipment management, passage plan adherence, and communication.
A dedicated lookout may be posted to assist, but the OOW retains overall responsibility. In confined waters or reduced visibility, a separate lookout is generally required so the OOW is not distracted from the con.
Immediate Action vs. Calling the Master
This is a core examiner trap. The OOW must act immediately to avoid danger — then call the master. Delay in taking avoiding action while waiting to inform the master is a serious failure. Equally, the OOW must know the standing orders and the precise circumstances under which the master is to be called before a situation becomes critical. Calling too late is as serious as failing to call.
Master's Standing Orders vs. Night Orders
- Standing orders — permanent, standing instructions covering the OOW's authority and the threshold for calling the master. Always in force.
- Night orders — voyage-specific instructions for a particular passage or period, updated regularly. Read, signed, and acted upon each watch.
An OOW who cannot distinguish these will concern an examiner. Both must be read and signed; neither overrides the OOW's duty to act in an emergency.
Handing Over the Watch
A watch must not be handed over if a manoeuvre or situation is still developing. The relieving officer must be fully briefed — position, course, speed, traffic, weather, anything pending — and must confirm they are fit and ready to take the watch. An impaired or unprepared relief must not be accepted.