H2x

H2X was a British underwater glider made of steel and called by the British "'snake wagon." It was designed to attack enemy submarines and ships by releasing its payload of anti-ship bombs. The glider's length was approximately 24 feet, and its diameter was about 90 cm.

The glider was designed by British engineers during World War II. It was used for various maritime targets. The H2X was launched from a catapult on a British ship and could dive up to 500 feet below the surface before releasing its payload. The payment released at a depth of about 60 feet. The glider's payload was made of several semi-armour-piercing bombs or one torpedo.

The pilot could guide it from a distance before releasing the payload using wireless remote control. H2X and its versions were essentially prototypes made to meet emergency operational requirements of the war. A pathfinding spiral glider delivery of torpedoes was allowed by one version of the glider, and a high underwater affinity sail with its own hang time form wasn't spotted.

On test launches, the H2X successfully completed its mission. Results showed low speed, poor range, leaked seals, and adhesive seal second-generation torpedoes. Overall recommendations suggested rearranging the glider structure to provide adequate stability and tackling prevalent limited functionality.