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The mast of a sailing vessel is a tall spar, or arrangement of spars, erected more or less vertically on the centre-line of a ship or boat.
Mast seeding (or mast reproduction) is defined as the highly variable annual production of fruit by a population of trees or shrubs. [8] These intermittent pulses of food production drive ecosystem-level functions and forest dynamics. [ 10 ]
A mast radiator or mast antenna is a radio tower or mast in which the whole structure is an antenna. Mast antennas are the transmitting antennas typical for long or medium wave broadcasting. Structurally, the only difference is that some mast radiators require the mast base to be insulated from the ground.
Mast (botany), the edible parts of woody plants; Mast Arboretum, at Stephen F. Austin State University in Nacogdoches, Texas; Mast cell, involved in the allergy response; Mast., in botanical naming, the standard author abbreviation for Maxwell T. Masters; Two microtubule-associated serine/threonine-protein kinase enzymes:
In naval tradition, mast is the traditional location of the non-judicial hearing under which a commanding officer studies and disposes of cases involving those in his command. In the United States Navy and U.S. Coast Guard , these proceedings take place under the authority of Article 15 of the Uniform Code of Military Justice (UCMJ).
Mast stepping is the process of raising the mast of a boat. It may be a ceremonial occasion on a new boat, a necessary step (as in stepping the mast of a small sailing dinghy or gig), or simply routine (as following seasonal maintenance on a sailboat).
A guyed radio mast. A guyed mast is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground or a base) for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads.
The top on a traditional square rigged ship is the platform at the upper end of each (lower) mast. [1] This is not the masthead "crow's nest" of the popular imagination – above the mainmast (for example) is the main-topmast, main-topgallant-mast and main-royal-mast, so that the top is actually about 1/4 to 1/3 of the way up the mast as a whole.