A slightly different sea story some of you might find amusing.
Many years ago I lived in San Diego. I had some close friends at a resort in Mission Bay, just north of the city, who had a 20' catboat they let me borrow whenever I wanted. I often went day sailing with a young lady friend, having a picnic at sea, as it were.
It was my habit on such day sails to leave Mission Bay, sail down and around the Islas de Los Coronados (Mexican islands just a couple miles south of the border), and return.
On our way south on one particular trip, we encountered a runabout with three young men in it. They decided to have fun with the couple in the ever-so-slow sailboat, so they started with the smart-ass catcalls, the buzzing to make us bounce in their wake, and the usual crap such people do. What could we do? You can't chase down a motorboat with a sailboat. We just ignored them until they got bored at went away, after calling us some rather colorful names.
Well, we continued on around the islands, stopped in the lee of the largest island, ate our lunch, and headed back.
Just south of the border (in Mexican waters), guess who we found floating in a kelp bed? Our friends in the runabout. It seams that they weren't smart enough to stay clear of kelp beds in small power craft (kelp [Seaweed] fouls the propeller on such boats), and neither were they smart enough to carry extra shear pins for the prop. (Shear pins are breakaway pins that couple the propellor to the drive shaft. They're designed to break if anything [LIke kelp] jams the prop so as to protect the drive shaft and motor. Coast Guard regulations require that spares be carried at all times.)
Since neither boat had a radio, I threw them a line and towed them—very slowly—back into American waters. We were quickly spotted from shore, and the Coast Guard came and took them off our hands. I love the Coast Guard. I gave a full report of our encounters to the officer in charge, he thanked me, and we went on our way.
I'm willing to bet that our friends' day was not nearly as much fun as ours.