Appendix A-2 CR44/54 Glossary of terms
flow passing the transducer. The correct pulse rate is calculated by:
19000 x indicated speed (e.g. 4kn)
= 15.200 pulses/nm
actual speed (GPS) (e.g. 5kn)
Measurement units – the user may select the displayed units to be one of the
following:
m meters
ft feet
fm fathoms
nm nautical mile, 1 nm is 1,852 meters
kn knots, nautical mile per hour
km kilometer, 1 km is 1,000 meters
kh kilometer per hour
mi statute mile, 1 mile is 1,609 meters
mh mile per hour
MENU – the selection of main menus will be shown in the upper part of the
screen. Leaf through the menus by means of the cursor key and the [ENT]
key, or use the numerical keys to activate one of the menus.
Navigation simulator - the chartplotter function features a built-in navigation
simulator which can be used for demonstration purpose or for practicing ‘live’
navigation in ‘off season’.
Navigation to cursor or waypoint, in route or in track is started as described in
chapter 5. The navigation simulator is started via the NMEA interface setup:
Press [MENU],[7],[2]; go to ‘OFF’ next to ‘External pos data:’ and press the
[-] key to toggle to: Dead reck.; move cursor to the right and enter a speed
value of e.g. 10 knots; press [ENT] twice.
The ship symbol will now ‘sail’ to the point of destination directly or via the
route you have selected and you can see how the alarms and automatic waypoint
shift all work, as if you were sailing yourself. You can also simulate making a
track trailing the ship or plotting eventmarks, etc. as the ship is ‘sailing’.
NMEA – National Marine Electronics Association. The NMEA is an organi-
zation of manufacturers of marine electronics equipment. They have adopted
the NMEA0183 as a standard for communications between various types of
marine electronic equipment.
Port side – left (red) / Starboard side – right (green).
Position update - if, for some reason, there is no position update from GPS
or external sensor, the displayed position will start to flash and an alarm will
be activated to alert the operator. ‘Position missing’ alarm can be set ON/OFF
- see section 7.5. Reset the alarm by [CLR]. The displayed position will stop
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