US Submarine System With Three Sections
| Day 1 | Day 2 | Day 3 | |
|---|---|---|---|
| 2330-0530 (Mid Watch) | Team 1 | Team 2 | Team 3 |
| 0530-1130 (Morning Watch) | Team 2 | Team 3 | Team 1 |
| 1130-1730 (Afternoon Watch) | Team 3 | Team 1 | Team 2 |
| 1730-2330 (Evening Watch) | Team 1 | Team 2 | Team 3 |
Aboard United States submarines, where the working day is 18 hours instead of 24, the crew is normally divided into three sections, with each section standing 6 hours of watch followed by 12 hours off-watch. The 12 hours off-watch are further divided into the first 6 hours being used for maintenance, cleaning, and entertainment; while the second 6 hours are usually for sleeping.
Note that this arrangement results in one of the sections having two watches in one (24 hour) day, and there are no dog watches. Also, watch reliefs occur no later than the bottom of the hour (2330, 0530, 1130, 1730). This is because the first 30 minutes of the hour are used for the oncoming section to eat, and the second 30 minutes of the hour are used for the off-going section to eat.
Read more about this topic: Watch System
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