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An outrigger is a projecting structure on a boat, with specific meaning depending on types of vessel. Outriggers may also refer to legs on a wheeled vehicle that are folded out when it needs stabilization, for example on a crane that lifts heavy loads.
The main advantage of a crawler crane is its ready mobility and use, since the crane is able to operate on sites with minimal improvement and stable on its tracks without outriggers. Wide tracks spread the weight out over a great area and are far better than wheels at traversing soft ground without sinking in.
It has a revolving hydraulic crane with an extending boom that can extend from 10–18 ft with a maximum lift capacity of 20,000 lb with outriggers and boom jacks to the ground. The boom capacity depends on boom extension and placements of truck outriggers and boom jacks. With boom full out and no outriggers, the capacity is only 3000 lb.
On the cross trees, two guys are fastened using swivel outriggers which are stayed vertically and horizontally. In order to maintain a good controlling angle between guys and derrick, the outriggers cannot pass the inboard parallel of the centerline. The right outrigger stays in the centerline while the left outrigger moves outboard.
Outrigger trawlers use outriggers, or booms, to tow the trawl. These outriggers are usually fastened to, or at the foot of the mast and extend out over the sides of the vessel during fishing operations. Each side can deploy a twin trawl or a single otter trawl. Outrigger trawlers may have the superstructure forward or aft.
Austronesians used distinctive sailing technologies, namely the catamaran, the outrigger ship, tanja sail and the crab claw sail.This allowed them to colonize a large part of the Indo-Pacific region during the Austronesian expansion starting at around 3000 to 1500 BC, and ending with the colonization of Easter Island and New Zealand in the 10th to 13th centuries AD.
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Lifting crane or gantry crane. Ferry ramp for vehicles. Ancient Greece ships sometimes had shrines or altars on the afterdeck. [6] Gallery. HMNZS ...
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