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The otter may have multiple different designs. Otter boards used in bottom trawling are based on a similar design principle. The design takes advantage of the shearing effect achieved when the board is positioned at an oblique angle to the current. The effect is reminiscent of that of a kite in the wind. [2] [1] Different designs are found in ...
Pelagic (midwater) otter trawl. 1: trawl warp, 2: otter boards, 3: longline chains, 4 hunter, 5: weights 6: headline with floats, 7: pre-net, 8: tunnel and belly, 9: codend. The body of the trawl is funnel-like, wide at its "mouth" and narrowing towards the cod end, and usually is fitted with wings of netting on both sides of the mouth.
Some otter trawlers are also outrigger trawlers (above), using outriggers to tow one or two otter trawls from each side. [22] Usually otter trawlers have the superstructure forward, though it can be aft or amidship. Gallows are on the stern quarters or there is a stern gantry for operating the otter boards.
List of free analog and digital electronic circuit simulators, available for Windows, macOS, Linux, and comparing against UC Berkeley SPICE.The following table is split into two groups based on whether it has a graphical visual interface or not.
PollExLogic - PCB schematic tool to import and view schematic sheets, designs, check symbols, nets, and object properties. PollExCP - Cross Probe for design comparison (Board to borad, and board to schematic to BOM) PollExBOM - BOM parsing and formatting tool; PollExCAM - To handle any type of Gerber data and compare revisions
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