Digital Nautical Chart (DNC) - NGA

MIL-PRF-89023
Appendix A NAV
BR2 Broadcast Frequency (2) The frequency in kilohertz (kHz) on which a
station broadcasts (second occurrence).
Increment: 1 Kilohertz (KHz)
Limits: NA
Variance: NA
CCC Color Code Category Color of the sea floor, light, buoy, structure,
etc.
COL Character of Light Any identifier comprised of the class, number and
color(s) of flashes or occultations, of a light or lights at one
geographic position (e.g. Q(6)+L F1, VQ G, L F1 (3+2)WR).
EOL Elevation of Light The elevation of a light.
Increment: 1 Meter
Limits: Measured from mean sea level to the focal plane of the light.
Variance: NA
HLT Hydrographic Light Type The type of light used for marine
navigation.
IAC IALA Aid Category Whether a navigational aid conforms to the IALA
system of navigational aids.
LVN Light Range, Nominal The luminous range when the meteorological
range is ten sea miles.
MLR Multiple Light Ranges A set of two numbers, light ranges at a light
expressed in nautical miles, separated by a slash (/) if only two
visibilities exist, or by a dash (-) separating the greatest and least
visibilities if 3 or more exist.
NAM Name Any identifier or code.
NST Navigation System Types Type of equipment or system used in
electronic navigation.
NS2 Navigation System Types (2) The type of radio navigational aid
employed (Second occurrence).
PER Period of Light The time occupied by an entire cycle of intervals of
light and eclipse.
REF Radar Reflector Attribute Indicates whether or not a radar reflector
is attached to, or connected with, a feature.
SST Sound Signal Type Type of audible signal.
TMC Top Mark Characteristic The characteristic shape secured at the top
of a buoy or beacon to aid identification.
TXT Text Attribute Narrative or other description.
BC055 Marker A colored (usually white) mark on a cliff, rock, wall, etc.,
which is a conspicuous landmark for marine navigation.
BC070 Light Vessel /Lightship A distinctively marked manned vessel anchored or
moored at a defined point to serve as an aid to navigation.
BRF Broadcast Frequency Broadcast frequency of a communications device.
BR2 Broadcast Frequency (2) The frequency in kilohertz (kHz) on which a
station broadcasts (second occurrence).
Increment: 1 Kilohertz (KHz)
Limits: NA
Variance: NA
COL Character of Light Any identifier comprised of the class, number and
color(s) of flashes or occultations, of a light or lights at one
geographic position (e.g. Q(6)+L F1, VQ G, L F1 (3+2)WR).
EOL Elevation of Light The elevation of a light.
Increment: 1 Meter
Limits: Measured from mean sea level to the focal plane of the light.
Variance: NA
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