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Vertical transom and stern of a modern cargo ship. In some boats and ships, a transom is the aft transverse surface of the hull that forms the stern of a vessel. Historically, they are a development from the canoe stern (or "double-ender") wherein which both bow and stern are pointed. Transoms add both strength and width to the stern.
The principle of the rate of the turn indicator is based on a gyroscope with an availability of turning in just one direction. When the ship is steering a straight course, the gyroscope will point in a straight direction and the pointer will point to the zero on the display.
Aircraft maneuvering is referenced to a standard rate turn, [1] also known as a rate one turn (ROT). A standard rate turn is defined as a 3° per second turn, which completes a 360° turn in 2 minutes. This is known as a 2-minute turn, or rate one (180°/min).
The wind triangle is used to calculate the effects of wind on heading and airspeed to obtain a magnetic heading to steer and the speed over the ground (groundspeed). Printed tables, formulae, or an E6B flight computer are used to calculate the effects of air density on aircraft rate of climb, rate of fuel burn, and airspeed.
An explanation of the term "dry rot" circles around boatyards periodically. In the age of wooden ships, boats were sometimes hauled for the winter and placed in sheds or dry dock for repair. The boats already had some amount of rot occurring in the wood members, but the wood cellular structure was full of water making it still function ...
A method of fixing together two pieces of wood, usually overlapping planks, by driving a nail through both planks as well as a washer-like rove. The nail is then burred or riveted over to complete the fastening. clew One of the lower corners of a square sail, or, on a triangular sail, the corner at the end of the boom. [2] clewlines clew-lines
Graph of power versus speed for a displacement hull, with a mark at a speed–length ratio of 1.34. For small displacement hulls, such as sailboats or rowboats, wave-making resistance is the major source of the marine vessel drag.
The Mil-HDBK-217 reliability calculator manual in combination with RelCalc software (or other comparable tool) enables MTBF reliability rates to be predicted based on design. A concept which is closely related to MTBF, and is important in the computations involving MTBF, is the mean down time (MDT). MDT can be defined as mean time which the ...