As crew, what is a simple, useful thing to understand about "tacking" versus "gybing", even before you're steering through either yourself?

A. Tacking and gybing are two names for exactly the same manoeuvre

B. Both change the boat's course through the wind to the opposite tack, but tacking turns the bow through the wind (generally the calmer, more controlled way) while gybing turns the stern through the wind, which can bring the boom across quickly and with more force — knowing which is happening helps crew understand why the skipper calls a warning and to keep clear of the boom during a gybe especially

C. Only the skipper needs to understand the difference; crew positioning is unaffected either way

D. Gybing is always the safer of the two manoeuvres in any wind strength

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