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They are used to catch pelagic fish (like tuna, mackerel scad, and kawakawa). Large tuna can be caught in this manner at depths of under 300 meters, far shallower than by contemporary methods like purse seining. [4] [2] Payao have several different variants, ranging from simple to complex constructions.
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]
Further out, 50 to 150m, a less dense group of larger yellowfin and albacore tuna gathered. Yet further out, to 500m, was a dispersed group of mature tuna. The distribution and density of these groups was variable and overlapped. The FADs were also used by other fish, and the aggregations dispersed after dark. [4]
They are used for other fish as well, ... It’s forage food for fish, marine mammals and birds. Bluefin tuna, sharks and whales eat it. ... management areas and types of fishing gear to consider ...
Artist's conception of tuna trolling operation, using outriggers to tow multiple trolling lines and give the appearance of schooling fish. Trolling is a method of fishing where one or more fishing lines, baited with lures or bait fish, are drawn through the water at a consistent, low speed.
Longlines can be set to hang near the surface (pelagic longline) to catch fish such as tuna and swordfish or along the sea floor (demersal longline) for groundfish such as halibut or cod. Longliners fishing for sablefish , also referred to as black cod, occasionally set gear on the sea floor at depths exceeding 1,100 metres (3,600 ft) using ...
Long magurobōchō, used to filet tuna at the Tsukiji fish market A magurobōchō in use at the Tsukiji fish market in Tokyo. A magurobōchō (Japanese: 鮪包丁, lit. "tuna knife"), or magurokiribōchō (鮪切り包丁, lit. "tuna cutter kitchen knife"), is an extremely long, highly specialized Japanese knife that is commonly used to fillet tuna, as well as many other types of large ocean fish.
They can be used as stealthy platforms for fishing shallow waters around lakes. In sheltered coastal waters, anchored or drifting rafts can become effective fish aggregating devices. Payaos were traditional bamboo rafts used in Southeast Asia as aggregating device. Fishermen on the top of the raft used handlines to catch tuna. [7]
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