AIR SUPPORT VESSEL Russian patent published in 2000 - IPC

FIELD: shipbuilding. SUBSTANCE: vessel has hull with watertight bulkheads. Air feed chamber with air supply fan impellers is arranged between two bulkheads in stern part. Upper panel of chamber is made in form of two spiral sheets mated with upper shaped tongue from one side. From other side, sheets are mated with board shaped tongue. Spiral sheets are connected with chamber bottom by upper tongue and flat sheet passing in diametric plane. Each board tongue is mated with board port. Chamber bottom is made of two bow- shaped parts, each bow-shaped part being mated with bottom shaped tongue and board port. Each bottom port is provided with diffuser made of flat sheet and of flat sheet installed at acute angle to chamber bottom. Board ports of chamber are mated with its upper panel and with chamber bulkheads. Chamber is furnished with partition dividing it into two compartments. Partition is installed in parallel with vessel bulkheads. Two holes in partition are symmetrical relative to diametric plane. Air supply fans mentioned above are installed in holes. Diameter of hole exceeds outer diameter of fan by 10% maximum. EFFECT: improved economy, carrying capacity and endurance of vessel. 5 cl, 3 dwg