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Use of a "Dead Man Anchor" - a large heavy weight - and restraining cable to prevent the bag from moving away too far, so that the buoyancy can be corrected to more closely match the load. [ 3 ] Use of shallow bags with long cables to the load to provide breakout, which will only lift a short distance before surfacing, after which the load can ...
The second mate's primary duty is navigational, which includes updating charts and publications, keeping them current, making passage plans, and all aspects of ship navigation. The second mate's other duties may include directing line handlers, cargo watches, directing anchor detail and training and instructing crew members.
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 ...
A third mate (3/M) or third officer is a licensed member of the deck department of a merchant ship. [1] The third mate is a watchstander and customarily the ship's safety officer and fourth-in-command (fifth on some ocean liners). The position is junior to a second mate. Other duties vary depending on the type of ship, its crewing, and other ...
AGT – (3) Azerbaijan – Georgia – Turkey (a region rich in oil related activity) [3] AHBDF – along hole (depth) below Derrick floor; AHD – along hole depth; AHU – air handling unit; AICD – autonomous inflow control device; AIChemE – American Institute of Chemical Engineers; AIM – asset integrity management
An earth anchor is a device designed to support structures, most commonly used in geotechnical and construction applications. Also known as a ground anchor , percussion driven earth anchor or mechanical anchor , it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.