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Eng ID Term Definition
3421
navigation: marine
NAVIGA­TION of water craft.
3422
navigation: offshore
NAVIGATION at distance from a COAST, in contrast with COASTWISE NAVIGATION.
3423
navigation: radio
See NAVIGATION: ELECTRONIC.
3424
navigation: short range
NAVIGATION employing only aids usable at short RANGES. The opposite is LONG RANGE NAVIGATION.
3425
navigation: sonic
NAVIGATION by means of SOUND WAVES whether or not they are within the audible RANGE. Also called acoustic navigation.
3426
navigation: submarine
NAVIGATION of a submarine, whe­ther submerged or sur­faced.
3427
navigation: surface
NAVIGA­TION of a craft on the sur­face of the EARTH. The expression is used par­ticularly with reference to NAVIGATION of vessels on the sur... more
NAVIGA­TION of a craft on the sur­face of the EARTH. The expression is used par­ticularly with reference to NAVIGATION of vessels on the surface of water. See NAVIGATION: LAND and NAVIGATION: UNDER­WATER.
3428
navigation: underwater
The NAVIGATION of a submerged vessel. Occasionally called SUBMARINE NAVIGATION.
3429
navigational
dj.). See NAUTICAL.
3430
navigational aid
(U.S. terminology). An instrument, device, CHART, method, etc., intended to assist in the NAVIGATION of a craft. An AID TO NAVIGATION is a n... more
(U.S. terminology). An instrument, device, CHART, method, etc., intended to assist in the NAVIGATION of a craft. An AID TO NAVIGATION is a navigational aid but the latter expression should not be confused with the former which refers only to devices external to a craft.
3431
navigational astronomy
See ASTRONOMY: NAUTICAL.
3432
navigational drafts
See DRAFT.
3433
navigational observation
Observations necessary to fix the position of a vessel.
3434
navigational parameters
All data characterising the position and motion of a vessel in a system of coordi­nates.
3435
navigational planet(s)
See PLANET(S): NAVIGATIONAL.
3436
navigational (or navigation) satellite
An artificial earth-orbiting SATELLITE designed for navigational purposes.
3437
navigational stars
Selected bright STARS whose POSI­TIONS are precisely tabulated in NAUTICAL ALMANACS for navigational purposes.
3438
navigational triangle
See ASTRONOMICAL TRIANGLE.
3439
navigational warning
A message containing urgent information relevant to safe navigation broadcast to ships in accordance with the provisions of the Internationa... more
A message containing urgent information relevant to safe navigation broadcast to ships in accordance with the provisions of the International Convention for the Safety of Life at Sea, 1974, as amended. See COASTAL WARNING, LOCAL WARNING, NAVAREA WARNING.
3440
navstar global positioning system
A satellite naviga­tion system.