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Boats can be refueled at sea using side by side procedures, and run on #2 diesel fuel. Weather survivability includes Sea State 5 survival at the best heading, and full operational capability at Sea State 3, including 20 knots (37 km/h; 23 mph) patrol speed and 10 knots (19 km/h; 12 mph) sustained loitering speed for 12 hours.
These boats are also known as "megayachts", "gigayachts" and even "terayachts", usually depending on length. [ 1 ] [ 2 ] It has been generally accepted by naval architects and industry executives that superyachts range from 37 m (≈120 ft) to 60 m (≈200 ft), while those over 60 m are known as megayachts and boats over 90 m (≈300 ft) have ...
Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth [1] (for example, £2.50 per metre LOA).
In comparison, the next-largest 47' MLB has a towing capacity of 150 long tons (150 t). [6] To increase their endurance and capabilities, the 52' MLB is equipped with a complete galley and a fire/salvage pump with 250 US gal/min (16 L/s) capacity. [4] In the 21st century, the Korean-war era vessels had to use custom built parts to stay operational.
The displacement–length ratio (DLR or D/L ratio) is a calculation used to express how heavy a boat is relative to its waterline length. [1] DLR was first published in Taylor, David W. (1910). The Speed and Power of Ships: A Manual of Marine Propulsion. John Wiley & Sons. p. 99. [2]
A naval ship (or naval vessel) is a military ship (or sometimes boat, depending on classification) that is used by a navy. Naval ships are differentiated from civilian ships by construction and purpose. Generally, naval ships are damage resilient and armed with weapon systems, though armament on troop transports is light or non-existent.
A smaller steel hull tugboat was the 94-foot (29 m) V2-ME-A1; 26 were built. The largest wooden hull was the 148-foot (45 m) V3-S-AH2, of which 14 were built. The smaller wooden hull was the 58-foot (18 m) V2-M-AL1, which 35 were built. Most V2-M-AL1 tugboats were sent to the United Kingdom for the war efforts under the lend-lease act.
The US version was designated 'EC2-S-C1': 'EC' for Emergency Cargo, '2' for a ship between 400 and 450 feet (120 and 140 m) long (Load Waterline Length), 'S' for steam engines, and 'C1' for design C1. The new design replaced much riveting, which accounted for one-third of the labor costs, with welding, and had oil-fired boilers.