No, it is a secret experimental Mini Sub desiged to break the H2O Barrier. It is launched from the torpedo tube in a regular sub. The initial drive is an H2O2 turbine driven propellor. This drive is dropped after cavitation on the propellor starts. The final drive is a type of Aquatic Ramjet, using pure HTP with a secret catalist, transforming compressed seawater into superheated steam.