What is the general purpose of a "watch system" on a passage of more than a few hours, even with a small crew?

A. Watch systems are only relevant on ocean crossings, never on coastal passages

B. A watch system shares the workload of keeping a proper lookout and managing the boat across the crew, so no one person is left exhausted from staying alert continuously — genuine rest between watches matters for everyone's safety and judgement, not just comfort

C. A watch system exists purely to assign blame if something goes wrong during a particular period

D. With a crew of two or fewer, watch systems serve no useful purpose

A. Port and starboard change depending on which way the boat is facing

B. Port is the left-hand side and starboard is the right-hand side of the boat, when facing forward (toward the bow) — these terms are fixed to the boat itself, not to the direction you happen to be looking

C. Port refers to the front of the boat and starboard refers to the back

D. These terms are only used on larger commercial vessels, never on small craft

A. Always move as quickly as possible regardless of conditions

B. Keep one hand for yourself and one for the boat — maintain a secure handhold wherever practical, and move deliberately rather than rushing, especially in any kind of sea state

C. It doesn't matter how you move around, as long as you get where you need to be

D. Only the skipper needs to think about safe movement around the boat