| 摘要 |
A trawling vessel is provided with a trawl net ( 5 ) for catching marine bio-resources, with a trawl sack ( 3 ) attached aft on a trawl net ( 5 ) for keeping the catch. The vessel comprises lines ( 51, 61 ) for towing and hauling the trawl net ( 5 ), and trawl drums ( 6 ) for hauling the trawl net ( 5 ). A lock chamber ( 1 ) is provided in a stern ( 21 ) of the vessel and has a main portion of its volume arranged below the design water line of the vessel. The lock chamber ( 1 ) is arranged for hauling the trawl sack ( 3 ) with the catch from the sea through a sluiceway ( 2 ) in the stern ( 21 ), for discharging the trawl sack ( 3 ), and for temporarily keeping the catch. A trunk channel ( 16, 12 ) leading up from the lock chamber ( 1 ) enables the trawl sack ( 3 ), in a generally discharged state, to be hauled up through the trunk channel ( 16, 12 ) to a deck ( 24 ), thereby leaving the catch in the lock chamber ( 1 ).
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