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Knockdown
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- To be capsized by the wind or waves.
- The condition of a sailboat being pushed abruptly to horizontal, with the mast parallel to the water surface.
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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
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Celestial navigation, английский
- To calculate your position using time and the position of celestial bodies.
- Астронавигация
- Астронавигация, астронавтика
- The science of determining position by means of heavenly bodies rather than by surface landmarks as in pilotage.
Make fast, английский
- To attach a line to something so that it will not move.
- (see: fasten) закреплять, скреплять, прикреплять,
- A word generally used for tying or securing ropes. to fasten.
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