Some time ago I found a convoy and saved a few klicks from it. Attacked it and found HMS Rodney in the middle. Cocked up the attack so reloaded (weak I know) for another go. Same convoy, only this time there was no Rodney!
Last night I saved just after I'd sunk a Fiji in harbour, getting 10725 tons on my log

. However, when I later reloaded, the Fiji was still there resting on the bottom with its front out of the water, and there was no tonnage on my log! It's no longer a target so I can't hit it again

. Don't get it...
Anyway was wondering is this sort of thing normal? It's certainly a bit frustrating but maybe it teaches that reloads are poor form

.