Regulation 2.3 of MLC 2006 limits hours of work and rest for seafarers. The idea is simple: a tired watchkeeper or engineer is a risk to themselves and to the ship.
The basic limits
The Convention defines two alternative approaches. One of the following applies:
- Maximum hours of work: not to exceed 14 hours in any 24-hour period and 72 hours in any 7-day period; or
- Minimum hours of rest: not less than 10 hours in any 24-hour period and 77 hours in any 7-day period.
Hours of rest may be divided into no more than two periods, one of which shall be at least six hours in length, and the interval between consecutive periods of rest shall not exceed 14 hours.
Why records matter
Ships must keep a table of working arrangements and records of hours of work and rest, which are examined during inspections. Accurate records are in your interest too. Falsifying records "to look compliant" can put you in a difficult position.
Emergencies
The Master may require a seafarer to work for as long as necessary for the immediate safety of the ship, persons on board or cargo, or to give assistance to other ships or persons in distress at sea. Rest must be taken as soon as practicable afterwards.
This is a summary. Check your flag State and company rules for the details.