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Eng ID | Term | Definition |
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3561 | ocean weather station | STATION aboard a suitably equipped and staffed ship which tries to maintain a fixed maritime location and which observes and reports for in... more |
|
3562 | octant | A double-reflecting instrument for measuring angles. It is similar to a SEXTANT but has an arc of only 45°. |
|
3563 | ocular micrometer | See MICROMETER. |
|
3564 | odograph | A mechanical instrument containing a distance-measuring element which is moved or turned by an amount proportional to the actual distance t... more |
|
3565 | odometer (or hodometer) | An instrument for measuring the distance travelled by a craft. See also SPEEDOMETER. |
|
3566 | oersted | The CGS unit of MAGNETIC FIELD INTENSITY in the SI system. |
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3567 | offing | That part of the visible SEA a considerable distance from the SHORE, or that part just beyond the limits of the area in which a pilot is nee... more |
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3568 | offset | In SURVEYING, a short line perpendicular to a surveyed line, measured to a line or point for which DATA are desired, thus locating the secon... more |
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3569 | offset lithography | A method of printing in which an image is transferred from a printing PLATE on to a rubber-surfaced blanket and thence on the paper. The ima... more |
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3570 | offshore | (adj. and adv.). Away from the SHORE. |
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3571 | offshore | (n.). The comparatively flat zone of variable width which extends from the outer margin of the rather steeply sloping shoreface to the edge ... more |
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3572 | offshore navigation | See NAVIGATION. |
|
3573 | offshore wind | WIND blowing from the LAND toward the SEA. See LAND BREEZE. |
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3574 | off soundings | Said of a vessel navigating beyond the 100-FATHOM LINE. In earlier times, said of a vessel in water deeper than could be sounded with the HA... more |
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3575 | ohm | The unit of electrical resistance in the SI system. |
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3576 | oil field | An area in which oil occurs in quantities worthy of exploitation. |
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3577 | old ice | Any SEA ICE more than 1 year old. |
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3578 | omnibearing | The MAGNETIC BEARING of an OMNIRANGE. |
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3579 | omnidirectional antenna | See ANTENNA. |
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3580 | omnidirectional beacon | See OMNIRANGE. |