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Eng ID Term Definition
2821
light: long-flashing
A FLASHING LIGHT in which a single flash of not less than two SECONDS duration is regu­larly repeated.
2822
light: marine
A LIGHT intended primarily for MARINE NAVIGATION.
2823
light: Morse code
A rhythmic LIGHT in which appea­rances of light of two clearly different durations are grouped to represent a character or characters in the... more
A rhythmic LIGHT in which appea­rances of light of two clearly different durations are grouped to represent a character or characters in the Morse code.
2824
light: obstruction
LIGHT indicating the presence of an OBSTRUCTION.
2825
light: occasional
A LIGHT not regularly exhibited.
2826
light: occulting
A rhythmic LIGHT in which the total duration of light in a PERIOD is clearly longer than the total duration of darkness and all the eclipses... more
A rhythmic LIGHT in which the total duration of light in a PERIOD is clearly longer than the total duration of darkness and all the eclipses are of equal duration.
2827
light: point
A luminous SIGNAL appearing without per­ceptible length, as contrasted with a LINEAR LIGHT.
2828
light: quick-flashing
A LIGHT exhibiting without inter­ruption very rapid regular alternations of light and darkness.
2829
light(s): range
Two or more LIGHTS in the same hori­zontal DIRECTION, particularly those LIGHTS so placed as NAVIGA­TIONAL AIDS to mark any line of importan... more
Two or more LIGHTS in the same hori­zontal DIRECTION, particularly those LIGHTS so placed as NAVIGA­TIONAL AIDS to mark any line of importance to vessels, as a CHANNEL. The one nearest the observer is the front light and the one farthest from the observer is the rear light. See LIGHT(S): LEADING.
2830
light: rear
See LIGHT(S): RANGE.
2831
light: revolving
See LIGHT: ROTATING.
2832
light: rhythmic
A signal LIGHT that shows intermittently, in any given direction, with a regular periodicity. Also referred to as intermittent light.
2833
light: rotating (or revolving)
A LIGHT which has one or more BEAMS which rotate.
2834
light(s): runway
LIGHTS marking a RUNWAY.
2835
light: sector (or sectored)
A LIGHT presenting diffe­rent appearances (in particular, different colours) over various parts of the HORIZON of interest to maritime NAVIG... more
A LIGHT presenting diffe­rent appearances (in particular, different colours) over various parts of the HORIZON of interest to maritime NAVIGATION.
2836
light: short-flashing
A FLASHING LIGHT having indivi­dual flashes of less than two seconds duration.
2837
light(s): tidal
LIGHTS shown at the ENTRANCE of a HARBOUR to indicate TIDE and TIDAL CURRENT conditions within the HARBOUR.
2838
light: undulating
A con­tinuously luminous LIGHT which alternatively increases and decreases in brightness in cyclic sequence.
2839
light: unwatched
A naviga­tional LIGHT, usually automa­tic in operation, without any permanently-stationed personnel to superintend it.
2840
light(s): vertical
Two or more LIGHTS disposed verti­cally to give a different CHARACTER or appearance.