World's Deepest-Diving Unmanned Submarine Lost
XenonOfArcticus writes "Kaiko, the world's deepest-diving submarine was lost in in late May off Japan, after it snapped its tether as a typhoon approached. Kaiko entered the record books in 1995 by diving 36,008 feet to the bottom of the Challenger Deep - the ocean's deepest point."
Yeah. Without the Challenger, who knows when we can launch the Hubble telescope?
"It's overkill, of course. But you can never have too much overkill." - Anonymous Slashdot Coward
Attach a miniature bathiosphere to the submersable. Have it large enough to contain a homing pigeon. Teach it how to drive the sub but don't let it actually control it unless the cable breaks.
Or alternatively, you could devise a small capsule that would fire a smoke canister and signal flares upon surfacing.