Diving under ships.

[Diver below 83]

We had a special diver's tag out list for having them over the side when I was on subs. Oddly enough the only time I've had to aim a loaded weapon at a human was when our topside watch called repel boarders in Pearl Harbor of all places. He saw diver's bubbles coming up near the hull and we weren't rigged for divers or flying the Alpha flag. That lost diver was lucky he didn't get too close to our seawater inductions and that our reactor was shut down. The loaded guns were the least of his worries. I'm sure his chief gave him a talking to.

Now that would be funny. Randomly swimming up on a sub. Oops.

 

[Chidiver1]

I've inspected the bottoms (NDT) of several large freighters and cleaned even more. You go through a lengthy lock out, tag out procedure that you hope doesn't fail. I have pictures of me standing on the nut of the propeller reaching only about half way up a single blade of the prop.