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The two types of gear are the bag net ("basnig") and the blanket net. Depending on the target species, the catch process is supported by lights or bait. Most of the target species are small pelagic species and so takes place in water areas all over the world. The net is operated from the surface in the upper column, at sea or on inland water.
The pneumatic float consisted of an outer perimeter tube, a floor, and a removable center tube. The 18 short tons (16 t) capacity float was 8 feet 3 inches (2.51 m) wide, 33 feet (10 m) long, 2 feet 9 inches (0.84 m) deep. [45] Solid ponton
A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.
Drum gates are hollow gate sections that float on water. They are pinned to rotate up or down. Water is allowed into or out of the flotation chamber to adjust the dam's crest height. Drum gates are controlled with valves. Drum gates on a diversion dam: Roller gates are large cylinders that move in an angled slot. They are hoisted with a chain ...
Ship caisson at Droogdok Jan Blanken at Hellevoetsluis. A caisson is a form of lock gate.It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock to close it, or pumped dry to float it and allow it to be towed clear of the dock.
The Tainter gate is used in water control dams and locks worldwide. The Upper Mississippi River basin alone has 321 Tainter gates, and the Columbia River basin has 195. A Tainter gate is also used to divert the flow of water to San Fernando Power Plant on the Los Angeles Aqueduct. [1] Tainter gate at McAlpine Dam, Ohio River, Louisville, Kentucky
2. Any contraposing float rigging beyond the side of a vessel to improve the vessel's stability. 3. A thin, long, solid hull used to stabilize the inherently unstable main hull of an outrigger canoe or a sailboat. 4. A variety of structures projecting from a keelboat by which the running rigging may be attached outboard of the hull. 5.
The M934 (M935 with a hydraulic lift-gate) had a 17 ft (5.2 m) van body with a slide out section on each side. When the sections are extended the working floor was over 12 ft (3.7 m) wide. The body could support 5,000 lb (2,300 kg) of communications equipment.