My late uncle (dad's brother) was a landing craft officer with the Navy at the first major amphibious landing during WWII, at Tarawa, which was a gory "learning experience." Many years later after a career in sales, he became licensed skipper of a river cruise boat in Florida. He was well-suited to it, a leadership personality, but sociable and a good talker too. He went through all the licensing with the Coast Guard. He was a gifted mechanic. Eventually, he got disgruntled with the owners and went back to sales, but was rebuilding his tractor engine into his eighties. A friend also abandoned his career as a school principal in Alaska to skipper yachts for wealthy owners, and also spent a lot of time as a sailboat bum all over the world. The most nautical I ever got was as a radioman on a minesweeper off Vietnam, and the trans-Pacific return voyage. That ship, USS Gallant MSO 489, had a Washington spruce hull, and in the late 90's was sold to Taiwan and renamed. Now the Navy uses multi-purpose Litoral Combat Ships of two different designs. The crews have to be trained for the various uses, but the ships sure look new-age compared to my boat. We were mostly patrolling for weapons smuggling and warning merchant ships out of the so-called demilitarized zone, which wasn't so demilitarized. Saw a similar sized landing craft ship nose down in the harbor, mined by a swimmer-sapper. Our deck watch was assigned to throw concussion grenades over the side at irregular times to warn off a similar fate. If you were asleep below, you could hear those babies pop.