What are watches on board ship?

These are the divisions of the working day.

The first watch is from 20.00 until midnight; the middle watch is from midnight to 04.00; the morning watch is from 04.00 until 08.00; the forenoon watch is from 08.00 until noon; the afternoon watch is from noon to 16.00.

The next two watches are divided into 'dog watches' – the first dog watch is from 16.00 until 18.00 and the last dog watch is from 18.00 until 20.00.

The dog watches divide the 24 hour working day into an uneven number of watches so that the watch keepers do not keep the same watches everyday.