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Taut leg mooring
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Chains or cables stretched tight to subject the anchors to vertical forces as well as horizontal. see offshore mooring. taut-line hitch: an adjustable loop knot for use on lines under tension, made by tying a rolling hitch around the standing part after passing around an anchoring object. tension is maintained by sliding the hitch, thus changing the effective length of the standing part without retying the knot. it is typically used for creating adjustable moorings in tidal areas, but has many non-nautical applications—even being used by astronauts to repair the hubble space telescope.
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Horizontal, английский
- Горизонталь; горизонтальный
- Горизонталь; горизонтальный 287
- At right angles to the direction of gravity; on the level; parallel to the horizon; neither vertical nor inclined.
- A direction parallel to the horizon, or what is commonly termed lying flat. one of the greatest inconveniences navigators have to struggle with is the frequent want of a distinct sight of the horizon. to obviate this a horizontal spinning speculum was adopted by mr. lerson, who was lost in the victory man-of-war, in which ship he was sent out to make trial of his instrument. this was afterwards improved by smeaton, and consists of a well-polished metal speculum about 3-1/2 inches in diameter, inclosed within a circular rim of brass, so fitted that the centre of gravity of the whole shall fall near the point on which it spins. this is the end of a steel axis running through the centre of the speculum, above which it finishes in a square for the convenience of fitting a
Adjustable, английский
- Регулируемый; переставной; корректируемый
- Zero, adjustable range регулируемый нуль, регулируемая дальность
- Настраиваемый; регулируемый adjustable arrayмассив переменной длины; массив с переменными границами
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Tectonic plate, английский
Plates are like giant rafts of lithosphere (the earth’s surface) which collide with and are forced underneath other plates. see oceanic trench, ring of fire, and oceanic deep.
Tattooing, английский
The mariners’ obsession with body decoration began in the 17th century among roman catholic sailors who believed that a tattooed crucifix would serve to identify their corpses and ensure a proper funeral with all the churchly rites of burial. a century later sailors often had a pig tattooed on one foot and a rooster on the other, the superstition being that since neither of these creatures can swim, in the event of shipwreck, they would rush ashore taking the seaman with them. it is believed they got the idea from polynesian natives, some of whom were tattooed with sacred pigs and other charms.
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