On VHF radio, why is Channel 16 significant, and what is it generally used for?

A. Channel 16 is reserved exclusively for weather forecast broadcasts

B. Channel 16 is the international VHF distress, safety and calling channel — vessels monitor it while under way, and it's used to make initial contact (including Mayday and Pan Pan calls) before typically being asked to switch to a working channel for routine conversation, keeping 16 clear for genuine emergencies

C. Channel 16 is used only within marinas, never at sea

D. Channel 16 is a channel reserved solely for commercial shipping, not leisure vessels

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