TRAWL SHIP WITH AIR-LOCK CHAMBER Russian patent published in 2006 - IPC B63B35/16 

FIELD: trawl ships equipped with trail net for catching sea products.

SUBSTANCE: proposed trawl ship is provided with trawl bag secured behind trail net for holding the catch; ship is provided with lines for towing and hoisting the net and trawl drums for hoisting the trail net and air-lock chamber available in ship's stern; main part of volume of air-lock chamber occupies the space under designed waterline. Air-lock chamber is intended for hoisting the trawl bag with catch through sluicing passage in stern. Besides that, ship is provided with trunk running upward from air-lock chamber; this trunk is so positioned that trawl bag (in unloaded state) may be hoisted to deck through trunk leaving the catch in air-lock chamber.

EFFECT: possibility of keeping the catch intact in hoisting it on board the ship.

28 cl, 20 dwg