When the V-22 Osprey was still in development, one of the major roles it was expected to fill was that of submarine hunting. But this never happened, to the point that it's now largely been forgotten that it was ever contemplated. Why?
The Hunt-class minesweeper HMS Middleton was open to the public at HMS President. No, they didn't let me look at the engines, and I understand she's recently been given new ones anyway. Images follow: cc-by-sa on everything.
The Soviet ballistic missile submarine K-219 suffered an accident in the Atlantic, and later sank, in October 1986.
HMAS Melbourne was the Royal Australian Navy's last aircraft carrier (to date).
The Yak-38 (NATO reporting name "Forger") was the Soviet carrier-borne fixed-wing aircraft of the Cold War.
Not the ancestor of what would become the SR-71, this A-12 was to be the US Navy's very own stealth bomber.
The Helistat was a hybrid airship/helicopter combination, designed for heavy vertical lift.