Anchor handling tug
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Anchor handling tugs ( Anchor Handling Tug , abbreviation: AHT), sometimes colloquially known as anchor tugs , are a special form of tugs . They are used to assist drilling rigs , large pipelayers and to tow drilling rigs and other large offshore units without their own drive used.
The name comes from “anchor pulling”, the anchor laying , which places high demands on the crew of the anchor pulling tugs. Since the offshore units, such as the pipelayers when laying the pipeline, pull themselves forward on the anchors, the anchors have worked very firmly and deeply into the seabed. They must therefore be "broken out" by the powerful anchor-handling tug so that the anchors can be moved in the direction of travel and re-ejected there.
Some anchor-handling tugs also have transport capacity to deliver material for drilling rigs, for example. Such combined tugs are often called anchor handling tug supplies (AHTS) . The transition from AHT or AHTS to the supplier is fluid.
The Far Samson with a bollard pull of 432 tons of one of the strongest anchor handling tug in the world.
Selection of German shipyards that build anchor-handling tugs
- Volkswerft Stralsund , has only built anchor-handling tugs for Maersk so far
- Mützelfeldtwerft Cuxhaven, built a series of anchor-handling tugs for Harms salvage
Web links
Individual evidence
- ^ Anchor- handling tug »Global Renewables Shipbrokers. In: www.grs-offshore.com. Retrieved December 27, 2016 .