Hotrod gets it.
Anyone remember the Glomar Challenger which was supposed to be deep ocean oil drilling? That was to pick up a Commie nuke boat for spying/status checking the Soviet nuke fleet.

I'd bet there was a stealthy attack boat on station within hours and the crash location sensored up so a plankton couldn't float by without being recorded.

Up hills slow,
Down hills fast
Tonnage first and
Safety last.