NAUTILUS ZHBFK immersion suit is designed and produced according to the standards of the “Safety of Life at Sea (SOLAS)”(1974), its Amendment (1996) and MSC.81 (70) entitled “Revised Recommendation on Testing of Life-saving Appliances”. It is prepared for the operation persons on the ship or on the platform over the sea as a special overcoat for life-saving and thermal insulation when they are in the cold-water area or in the adverse circumstances. It is made of waterproof cloth and thermal insulation floating materials. The jacket, trousers, gloves and oil-proof boots are connected as one to cover the whole body except the face. It has the properties of floatability, waterproof and natural thermo stability. It is equipped with lifejacket light and whistle. It can be used as a lifesaving necessity without another lifejacket to put on for the people on the ship navigating at any area and platform over the sea. It has Large size and Middle size, which can be provided for people at the height of 1.75-1.9 m and shorter than 1.75 m separately.