agent86 wrote:
I also doubt the aircraft were slathered with cosmoline.
I have read many accounts over the years from ground crews reassembling these planes and having to wipe them off with rags soaked in gasoline to remove the cosmoline.Trust me they were coated to prevent corrosion during the ocean transit.Whether or not this matters now is open for discussion.
First, they were coated only enough for a relatively short exposure to ocean spray and such, and to be easily removed once arrived. They were not cocooned to the level required for long term storage.
The really neat thing about cosmoline is that it tends to work both ways- It keeps moisture out, but, if damaged, it allows moisture in, and will not let it back out. Ask any military vehicle collector who has purchased a "New-In Cosmoline" item only to have it arrive with the cosmoline only slightly damaged, and the part useless because of storage issues which allowed moisture to penetrate the cosmoline barrier. What should be a nice, shiny new camshaft for an engine will turn out to be something in relatively good shape, but with localized severe exfoliation corrosion issues. Better yet, something where the cosmoline is not applied directly to the item, but to a wrapper around it, and then sealed, etc. The moisture gets in, and has a shot at the whole part.
I would suggest that sinkings were not always the most gentle of methods. Aircraft on the deck would be breaking loose and sinking independently, while those in the holds would be crashing against one-another as the ship was torpedoed, rolled, or just plain asank after he explosion. It is not "boom, sink, settle smooth"- usually there is great structural damage, jumping, jostling, etc, coupled with a rotation as the vessel takes water, and sinks, with continued breaking up on the way to the bottom. Not complete, but enough to be a potential deterrant to continued cosmoline protection.
Then there is also the hazard of diving the wreck to remove the aircraft. The cosmoline, were it intact in the first place, would certainly be damaged with attempts to extract the plane.
If you want to see pics of aircraft wrecks in-situ in sunken ships holds, I suggest doing a google search- there are plenty of videos of them from the South Pacific...