During your oral exam you are shown a diagram: your yacht under power is crossing the path of a sailing vessel on a steady bearing, and you are unsure whether risk of collision exists. What should you do?

A. Maintain course and speed, as the sailing vessel has right of way and must take all necessary action

B. Alter course immediately without checking, since power-driven vessels must always give way to sailing vessels

C. Use all available means, including radar plotting or systematic visual compass bearings, to determine whether risk of collision exists, and if in doubt, assume that it does

D. Assume no risk of collision exists unless the other vessel sounds a signal

A. Neither vessel needs to act; both should maintain course

B. The vessel on the port tack shall keep out of the way of the other

C. Whichever vessel is larger must keep out of the way

D. The vessel on the starboard tack shall always keep out of the way

A. She must always show the full anchor light and ball regardless of location or size

B. Anchor lights are only required for vessels over 50 metres

C. A vessel of less than 7 metres in length, when at anchor in such a location, shall not be required to exhibit the lights or shapes (anchor light/ball) otherwise required by Rule 30 — this is a specific small-vessel exemption tied to both her size and the nature of the location

D. She must instead display the not-under-command lights