SUBMARINE

摘要

PURPOSE: A submarine is provided to conveniently and safely move people to an upper deck in a state of being floated on the surface of seawater. CONSTITUTION: A submarine comprises a pressure-resistant hull(2) and an upper deck(8). The upper deck is arranged above the pressure-resistant hull and is formed of an outer casing(4) arranged in the upper part of the pressure-resistant hull. Stair-shaped units are arranged on the outer casing so that people can move up to and down from the upper deck.