That too is part of my trip plan I leave with my wife - the plan states that I can send and receive morse code. By flashlight or whistle or whatever. Many SAR volunteers are hams. But anymore they are probably no-code folk.

Last time it proved to be handy in a non-ham radio situation was on the bridge of a destroyer in position preparing to come alongside the tanker to practice underway refueling.
I was an ROTC summer cruiser on the bridge and read out the blinking light on the tanker aloud. The Commanding Officer was astounded and fortunately didn't dismiss me from the bridge. But he did wait the additional 7 minutes for the message chit to come down from the signal bridge written by the official signalmen. They agreed with me :-)