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CPV550
UNITS
Nm
Nautical Mile (1 NM = 1.15 Sm or 1.85Km)
Sm
Statue Mile (1Sm = 0.87Nm or 1.61Km)
Km
Kilometer (1 Kilometer = 0062 Sm or 0.54Nm)
FT
Feet. (1 Foot = 0.167 Fathoms or 0.305 Meters)
FA
Fathom (1 Fathom = 6 Feet or 1.83 Meters)
Mt
Meter (1 Meter = 3.28 Feet or 0.55 Fathoms)
Kts
Knot (1 Knot = 1.15 MPH or 1.85 KPH)
MPH
Miles Per Hour (1 MPH = 0.87 Knots or 1.61 KPH)
Kmh
Kilometer Per Hour (1 KPH = 0.54 Knots or 0.62 MPH)
VMG
– It is the destination closing Velocity. The VMG is calculated using the current speed
of the vessel (SOG) and the difference between the current vessel course and the bearing
to the Destination.
WAAS 2D/3D
– The GPS is receiving a 2D or 3D position and the correction from the WAAS
Satellite. WAAS consists of approximately 25 ground reference stations positioned across
the United States that monitor GPS satellite data. Two master stations, located on either
coast, collect data from the reference stations and create a GPS correction message. This
correction accounts for GPS satellite orbit and clock drift plus signal delays caused by the
atmosphere and ionosphere. The corrected differential message is then broadcast through
one of two geostationary satellites, or satellites with a fixed position over the equator. The
information is compatible with the basic GPS signal structure, which means any WAAS-
enabled GPS receiver can read the signal.
WATER TEMP
– Shows the sea water temperature when the FF520 50/200kHz BLACK
BOX FISH FINDER or a Digital Speed Log/Temp instrument with NMEA is connected.
XTE
(Cross Track Error) – The distance your vessel is off course (left or right) to a
Destination point.
