Clean salt water is not always (or even often) an automatic death knell for most mechanical devices including vehicles, boats, ships or aircraft.
I've brought back to life more than a few of the above while in the Navy, especially when I was a USN Engineman down in Guantanamo Cuba for 24 months and again at Pensacola Fla for 18 months as well as when I worked in the oilfield in S. Louisiana.
Had a leak overnight in an LCU's starboard engineroom and the water got over both engines, the generator and switch gear. Pumped the water out, ballasted down the port side and the DC guys welded up the hole and we washed everything down with fresh water, changed the lubricants and filter and centrifuged out the fuel system and let everything dry for about a day. Everything was except the synchscope to parallel that gen with the port gen set never did work exactly right but we learned how/when to hit the transfer switch to parallel both generators together or parallel one with shore power. About 20 "minutes" before instead of 5 min before.

But, there is a huge difference in dropping something in the relatively clean calm ocean and then pulling it back out a few days later versus the kind of briny water that a hurricane brings in.
The water.. It's violently stirred up. It stinks...a LOT. It's sandy and gritty with all kinds of almost microscopic organics mixed in, and that stuff is, by high velocity wind/wave action, forced into every possible opening it encounters. Getting the stench of dead decaying organisms out of upholstery, insulation, padding and carpets is nearly impossible.
It's doable certainly, but not nearly as easy, cheap and fast as was after a quick dunk in the South China or Caribbean Sea was for an LCM or LCU or when they accidently sunk the admiral's barge while running at full speed across Guantanamo Bay or dropped the motor whaleboat off it's davits of the destroyer I was on, into Hong Kong harbor.

[This message has been edited by maryjane (edited 10-05-2022).]