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A deep-penetrating anchor (DPA) is conceptually similar to a torpedo anchor: it features a dart-shaped, thick-walled, steel cylinder with flukes attached to the upper section of the anchor. A full-scale DPA is approximately 15 metres (49 ft) in length, 1.2 metres (4 ft) in diameter, and weighs on the order of 50–100 tonnes (49–98 long tons ...
Since Aiviq is an anchor handling tug and supply vessel, she is fitted with a large towing winch located amidships as well as chain lockers and storage tanks for both liquid and dry bulk cargo under the main deck. [61] Her gross tonnage is 12,892, net tonnage 3,867 and deadweight tonnage 4,129 tonnes. [1]
A suction caisson can effectively be described as an inverted bucket that is embedded in the marine sediment.Attachment to the sea bed is achieved either through pushing or by creating a negative pressure inside the caisson skirt by pumping water out of the caisson; both of these techniques have the effect of securing the caisson into the sea bed.
Each anchor weighed 14 tonnes (30,000 lb) and was connected to the ship by wire rope cables 50 millimetres (2 in) in diameter and 2,100 metres (7,000 ft) in total length. All of the anchor cables on Seacrest were replaced with new cables during the summer of 1989, shortly before the storm. The ship heading as indicated on the last rig move ...
A tension-leg platform (gray) under tow with seabed anchors (light gray) held up by cables (red) on left-hand side; platform with seabed anchors lowered and cables lightly tensioned on right-hand side Tension leg platform (gray) free floating on left-hand side; structure is pulled by the tensioned cables (red) down towards the seabed anchors (light-gray) on right-hand side (very simplified ...
Swing moorings also known as simple or single-point moorings, are the simplest and most common kind of mooring. A swing mooring consists of a single anchor at the bottom of a waterway with a rode (a rope, cable, or chain) running to a float on the surface. The float allows a vessel to find the rode and connect to the anchor.
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An Admiralty Pattern anchor; when deployed on the seafloor the stock forces one of its flukes into the bottom. The Admiralty Pattern anchor, or simply "Admiralty", also known as a "Fisherman", consists of a central shank with a ring or shackle for attaching the rode (the rope, chain, or cable connecting the ship and the anchor). At the other ...