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IHO : International Hydrographic Office
IMO : International Maritime Organization
IR : Radar Interference Rejecter
ISW : Inter Switch unit
JB : Junction Box
KOPU : Keyboard Operation Unit
LMT : Local Mean Time
LON : Longitude
LAT : Latitude
LP : Long Pulse
MED : Marine Equipment Directive. Request standard for standardization of marine
equipment within the EU region
MFD : Abbreviation of this equipment name. The formal name is Multi Function
Display. The navigation support functions such as radar, ECDIS, CID, and
AMS with this equipment can be executed by switching.
MMSI : Maritime Mobile Service Identity
MOB : Man Over Board
MON : Performance MOnitor
MP : Medium Pulse
NM : Nautical Mile 1 nm=1852 m
N up : The north is always pointed to the top center of the radar display. (North up)
P0N : Unmodulated pulse, which is a type of transmission radio wave. While it is a
type of radio wave usually used by radars equipped with magnetrons, radio
waves with a short pulse length are used also by solid-state radars for
short-range detection.
PRIMAR STAVENGER : A Norwegian company supplying charts. Publisher of encrypted charts, S-63
PI : Parallel Index line
Past positions : Equally time-spaced past position marks of a tracked or AIS target and the
own ship.
POSN : POSitioN
PRF : Pulse Repetition Frequency. The number of radar pulses transmitted each
second.
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