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mack A structure which combines the radar mast and the exhaust stack of a surface ship, thereby saving valuable deck space. [citation needed]Mae West A Second World War personal flotation device used to keep people afloat in the water; named after the 1930s actress Mae West, well known for her large bosom.
The first recorded evidence of water depth measurements are from Ancient Egypt over 3000 years ago. [3] Bathymetry has various uses including the production of bathymetric charts to guide vessels and identify underwater hazards, the study of marine life near the floor of water bodies , coastline analysis and ocean dynamics , including ...
Typically used to assist in docking and undocking a boat, with its hook used to pull a boat towards a dock and the blunt end to push it away from a dock, as well as to reach into the water to help people catch buoys or other floating objects or to reach people in the water. boat keeper
UKC = Charted Depth − Draft-/+ Height of Tide. Ship masters and deck officers can obtain the depth of water from Electronic navigational charts. [5] More dynamic or advanced calculations include safety margins for manoeuvring effects and squat. [7] Computer systems and software can be used to manage and calculate UKC for ships and ports.
Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to the order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater ...
Hydrostatic pressure due to depth in the water column. Hydrostatic pressure is linear with depth and increases at approximately 1 bar for every ten metres of depth. [1]: Ch 1.3 Temperature of the water and the air above it. Sea surface temperature can vary from a minimum of −2 °C (28 °F) to a maximum of about 32 °C (90 °F). Higher surface ...
The new jetties at Dunkirk were founded in the sandy beach, by the aid of compressed air, at a depth of 22.75 feet (6.93 m) below low water of spring tides; and their solid masonry portion, on a concrete foundation was raised 50 feet (15 m). above low water of neap tides.
The maximum water depth in this Dock Complex is 12.5 meters (41 ft), which provides the ability to anchor ships up to 277 meters (909 ft) long. It is connected to the deep sea by the Western Channel, with an average depth of 8.3 meters (27 ft); therefore, the dock area is capable of anchoring ships up to 230 meters (750 ft) long.