When fighter jet pilots eject, they usually have to do so by firing a detonation cord in the canopy that blows a hole in it -milliseconds before the ejector seat blasts them clear of the aircraft.
Today’s invention is a modification of this scheme. When flying over water, the canopy, which would be specially reinforced, is jettisoned in one piece and attached to the pilot’s seat by a long cable.
When the pilot splashes down, he or she now has a small, transparent life raft to get aboard.
It might even be possible to have this incorporate a small motor and propellor.