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M500-4.1.8

Hours of work and rest legislation

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The Scenario

It is 0230. You are called to the bridge by the OOW: there is a man overboard alert from a nearby vessel. Your bosun — your most capable deck hand — has been on watch since 1800. He came off a six-hour anchor watch the previous afternoon. You need him on the foredeck for recovery operations. Before you give the order, a second question lands in your mind: your crew rotation for tomorrow's long offshore passage was already tight. Can you legally keep these people working?

This is an hours-of-rest problem. You are the master. The decision and the record are yours.

The Legal Framework

For UK-flagged yachts, hours of rest are governed by MSN 1877 (Amendment 2). MSN 1858 sets out certification and manning requirements; the hours-of-rest rules themselves sit in MSN 1877 Amd 2. Know both references — examiners will probe either.

Minimum rest requirements:

  • 10 hours rest in any 24-hour period
  • 77 hours rest in any 7-day period
  • Rest may be split into no more than two periods, one of which must be at least 6 hours
  • The interval between consecutive rest periods must not exceed 14 hours

These are minimums. Any schedule that breaches them is non-compliant — regardless of what the crew agrees to.

Records:

  • Maintained monthly in arrears
  • Endorsed by both the master and the seafarer
  • A copy given to the seafarer
  • Retained on board for at least 1 year
  • A table of shipboard working arrangements must be posted in English and the vessel's working language

The Master's Override Power

The master has the authority to suspend rest requirements in cases of emergency — safety of the ship, persons on board, or rendering assistance to another vessel in distress. The MOB alert qualifies. You call the bosun, you conduct the recovery, and you record the emergency in the log.

What you cannot do is treat the suspension as a convenience that quietly disappears. Once the emergency is resolved, you must:

  1. Record the suspension and the reason
  2. Ensure compensatory rest is provided as soon as practicable
  3. Revise your passage plan/watch schedule accordingly before departure — the 77-hour weekly limit does not reset just because an emergency occurred

Command Thinking

The bosun scenario forces you to do three things simultaneously: authorise the emergency action, protect the record, and plan the recovery of compliant rest before the next passage. A master who calls the bosun but forgets the compensatory rest and the log entry has solved one problem and created another — a PSC deficiency, or worse, a fatigued crew member on a night watch offshore.

Practice questions

recallcore

State the minimum hours of rest required in any 24-hour period and any 7-day period under UK regulations.

recallcore

What are your obligations regarding hours-of-rest records — how are they produced, endorsed, retained, and disclosed?

scenariocore

At 0330 you suspend rest requirements to deal with a flooding emergency. The situation is resolved by 0600. Your bosun was due to start a 6-hour anchor watch at 0800. What must you do before that watch begins, and what if you cannot achieve compliance in time?

oralcore

I'm the examiner. You're the master of a 350 GT yacht, five crew, about to depart on a 36-hour offshore passage. A PSC officer boards just before you sail and asks to see your hours-of-rest records. Walk me through what you produce, what it must show, and what a deficiency would look like.

scenariostretch

Your chief stewardess approaches you three days into a passage. She says she has been averaging 6 hours' rest per night because of late guest dinners and early morning cleaning schedules set by the chief officer. She has not said anything until now and the records — signed by her — show compliant rest. What is your exposure as master, and what do you do?

Independent preparatory study aligned to the MCA Master (Yachts less than 500 GT) oral examination syllabus. Not an MCA-approved course and confers no credit toward a Certificate of Competency.