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Seine nets can be deployed from the shore as a beach seine, or from a boat. Boats deploying seine nets are known as seiners. Two main types of seine net are deployed from seiners: purse seines and Danish seines. A seine differs from a gillnet, in that a seine encloses fish, where a gillnet directly snares fish.
The Puretic power block is a special kind of mechanised winch used to haul nets on fishing vessels. The power block is a large pulley of aluminium with a hard rubber-coated sheave. While many men were needed for the back-breaking work of hauling a purse seine manually, the same work could be done by fewer men with a power block. [1]
A factory ship, also known as a fish processing vessel, is a large ocean-going vessel with extensive on-board facilities for processing and freezing caught fish or whales. Modern factory ships are automated and enlarged versions of the earlier whalers , and their use for fishing has grown dramatically.
A fishing vessel is a boat or ship used to catch fish and other valuable nektonic aquatic animals ... On the deck are three drum purse seine winches and a power block ...
The purse seine is an example of a surrounding net. Here any salmon swimming near the surface are surrounded with a wall of netting, supported by floats. A surrounding net is a fishing net which surrounds fish and other aquatic animals on the sides and underneath. It is typically used by commercial fishers, and pulled along the surface of the ...
Given the selective properties of gillnet fishing, alternative methods of harvest are currently being studied. Recent WDF&W reports suggest that purse seine is the most productive method with having highest catch per unit effort (CPUE), but has little information on the effectiveness of selectively harvesting hatchery-reared salmon. [33]
In October 2010, the eight member states Parties to the Nauru Agreement (PNA) extended their prohibition on tuna purse-seine fishing in approximately 4.5 million square kilometres of the Pacific Ocean high seas by purse-seine vessels licensed to fish in their combined Exclusive Economic Zones. [2]
The 60-foot (18.3 m) purse seine fishing vessel sank in Peril Strait in the Alexander Archipelago in Southeast Alaska, 75 nautical miles (139 km; 86 mi) south of Juneau, Alaska, with the loss of two lives. Her lone survivor, her captain, was rescued from the water by a helicopter. [41]