The biplane Hurricane was meant as a convoy fighter that would only be able to be used once in most circumstances (I can't recall if the Landing gear were to be removed). The pilot would either have to ditch or bailout into the sea. Not a pleasant prospect on say the Murmansk convoys. The Hurricane would of been launched off of a frighter from a catapult like on a cruiser or BB
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Those existed, certainly, but they used fairly standard monoplane Sea Hurricanes, launched from a rocket-powered catapult on the bow of a freighter- see the attached image. I think the landing gear was replaced by a rocket-powered trolley that was jettisoned on takeoff.
Some notes:
The catapult appears to be about 4 times the length of the Hurricane, so about 40 m long.
A Hurricane takes off at 80 mph. That works out, in the length of the catapult, to just under 2G of acceleration.
The ship carrying the catapult also carries a full cargo.
There were 9 combat launches of Sea Hurricanes from freighters, resulting in a total of 9 kills, 1 enemy aircraft damaged and 3 enemy aircraft chased away. In 7 cases, the pilots ditched and were picked back up (once after being shot down). One pilot landed his aircraft at a Russian airfield, and one was killed by enemy fire.