Web2 Mar 2016 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press … WebSome derricks have steel plates on the load side of the boom to prevent this. When a guy derrick swings, the boom and mast move together; a pivoted fitting is provided at the mast top, and a ball-and-socket joint is mounted at the bottom. Above the top pivot is the fitting to which 53 54 Chapter Two Figure 2.3â•…

Understanding Heavy Lifting Operations And Vessel …

WebThe 6 modern vessels on our Dover to Dunkirk and Dover to Calais routes cross the English Channel up to 54 times every day and boast excellent facilities to keep everyone … Forms of derricks are commonly found aboard ships and at docking facilities. Some large derricks are mounted on dedicated vessels, and known as floating derricks and sheerlegs. The term derrick is also applied to the framework supporting a drilling apparatus in an oil rig. See more A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self … See more Hallen The boom is connected with the lower part of the mast which is shaped like a "Y" or a bipod and therefore it is a single swinging derrick. On the cross trees, two guys are fastened using swivel outriggers which are stayed vertically and … See more • Ministry of Defence (Navy) (1995). Admiralty Manual of Seamanship. The Stationery Office. pp. 3–194. ISBN 0-11-772696-6. … See more • Types of derrick • A-frame derrick • Basket derrick See more Another kind of derrick is used on oil wells and other drilled holes. Both the structure itself and the complex set of machines associated with it are referred to as a Derrick. This is also used on some offshore oil and gas rigs. See more • Crane • Gyn • Hoist • Lighter • Pumpjack See more • Media related to Derricks at Wikimedia Commons See more aset kota bandung

Light Derricks on a General Cargo Vessel – …

WebMuch like a crane, a derrick is used for moving materials vertically and horizontally, comprised of a hoisting mechanism and pulleys or sheaves to create a mechanical … http://www.planete-tp.com/en/IMG/pdf/5_cle65743c-4.pdf Web8 Feb 2014 · On ships with derricks each derrick is fitted with two preventer guys of wire and rope. These are used to steady a derrick in a set position stopping or preventing it … aset konsesi adalah