FIELD: shipbuilding; residual buoyancy, trim different and list control systems. SUBSTANCE: control system includes at least three cavities for change of buoyancy due to reception or discharge of sea water which is kept in these cavities at excessive pressure as compared with outside pressure due to gas entrapped in cavities. Cavities are spaced apart on hull of transport underwater unit for forming list and trim moments. Each cavity is communicated with sea water through respective water discharge valve and is provided with pumping unit fitted with non-return valve for admitting water into cavity. EFFECT: enhanced dynamic of control of underwater unit; enhanced operation safety. 3 cl, 3 dwg
