The boat is sitting safely on the mud, no one is hurt, and there is no sign of damage. Should the skipper still let anyone know what has happened?

A. Yes — a quick informal call or message to the Coastguard or harbour, giving position and explaining the boat is safely aground and waiting for the tide, means people know where you are and are not worried if you are late back

B. Only call for help if the boat tips over completely

C. Wait until you are back ashore before telling anyone, even if you are now several hours late

D. No — since nobody is hurt and the boat is safe, there is nothing worth telling anyone

A. Immediately call Mayday before checking anything else

B. Keep the engine at full power and try to drive straight off immediately

C. Put the engine into neutral straight away so the propeller is not churning into the mud or sand, then check if anyone is hurt and whether the boat feels level or is leaning over

D. Ignore it completely and carry on as if nothing has happened

A. On a falling tide, the water will keep getting shallower — if nothing is done, the boat could be left high and dry, and on a slope she might tip over onto her side. Acting quickly, before more water disappears, gives the best chance of getting off easily

B. Only the tide at the original harbour matters, not the tide where the boat is now

C. A falling tide is good news because the boat will float free on its own as the tide drops

D. The tide state makes no difference to a boat that is already aground