NorthStar Navigation EXPLORER 657 operation manual Navigation data

Page 91

Navigation data

The boat is sailing from the start to the destination and has moved oﬀ the plotted course from the start to the destination.

BRG	Bearing to Destination: Bearing to the destination from the boat.
BRG	Bearing to cursor: Bearing to cursor from boat (cursor mode, see section 3-2-1 [note the -1 added
	there])
CDI	Course Deviation Indicator: When the boat is navigating to a point, the chart and highway
	windows show a parallel line on either side of the plotted course. These two lines are called the
	Course Deviation Indicator (CDI) lines. The distance from the plotted course to a CDI line is the
	CDI scale.
	Set the CDI scale (see section 17-2) to the maximum distance that the boat should deviate from
	the plotted course. The chart and highway windows show the CDI lines, which are like a highway
	over the water where the boat will move. The windows show how far the boat has deviated from
	the plotted course and if the boat is approaching a CDI line. If the XTE alarm is enabled (see
	section 17-9) an alarm will sound if the boat reaches a CDI line.
COG	Course Over Ground: Direction in which the boat is moving over the ground.
CTS	Course To Steer: Optimum course to steer to return to the plotted course.
DTG	Distance To Go: Distance from the boat to the destination.
ETA	Expected Time of Arrival: At the destination, assuming that SOG and COG remain constant.
DST	Distance from boat to cursor (cursor mode, see section 3-2)
SOG	Speed Over Ground: Current boat speed over the ground. This is not necessarily the same as
	the boat speed through the water nor the speed at which it is approaching the destination.
STR	Steering: The diﬀerence between COG and CTS.
TTG	Time To Go: The estimated time to reach the destination.
XTE	Cross Track Error: The distance from the boat to the nearest point of the plotted course. XTE
	may have a letter: R means steer to the right to return to the plotted course, L means steer to
	the left.
VMG	Velocity Made Good: The speed at which the boat is approaching the destination.

Destination

DTG (distance)

SOG (speed)

VMG (speed)

BRG

STR COG

CTS

Destination
Plotted	XTE
course	XTE
	(distance)
	Boat
ne	position
ne
li
I
CD
CDI scale	CDI scale
CDI scale

ne li

I CD

Plotted course

Start

Boat position

(distance)	(distance)
(distance)
Start

Northstar Explorer 657 Installation and Operation Manual

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Image 91

Contents Explorer Damage Possible injury or deathCould result in death or serious injury Could result in minor or moderate injuryPage Contents Tides window User card window 15 AIS Installation Other Nmea instruments Installation Northstar petrol/gasoline sensorsIntroduction 657 can use two kinds of plug-in card Cleaning and maintenanceOverview Plug-in cardsReplacing the display unit Changing the plug-in cardRemoving the display unit Turn the display unit off see -2 and put the dust cover onOverview of the keys Using the keysUsing the menus Basic OperationTurning off manually Turning on and off / auto power Turning on manuallyMan overboard MOB Backlight and night modeNight mode To cancel MOB or set another MOBSimulate mode Alarms657 has user settable alarms see section Main windows Page Multi window displays Deleting a favorite display from the list Favorite displaysSelecting a favorite display Adding a favorite display to the listDisplays can show data at the top, called the data header Setting the data header for a displayData header CompassNavigating to a point Navigation ChartGoing to a waypoint or to a point on the chart Introduction to navigatingStarting a route from the routes window Starting a route from the chart windowCancelling a route PreparingLand Sea Cursor see section Typical waypoint see section Chart windowTo go to the Chart window, press then select Chart Typical chart window showsLatitude and longitude Chart modesChart scale Chart symbols and informationProjected course Finding a chart symbolPerspective view Distance and bearing calculatorInterval Track Track 2, 3, 4 or Navigation Highway windowTracks and tracking Time intervals Interval Track Track 2, 3, 4 orWaypoints window Navigation WaypointsMoving a waypoint Displaying a waypoint on the chartManaging waypoints Creating a new waypointSort Waypoints Navigation RoutesDeleting all waypoints Changing a waypoint’s dataCreating a new route Creating a new route from the chart windowRoutes window Managing routesCreating a new route from the routes window Displaying a route on the chartEditing a route from the chart Editing a routeSatellites Satellite window shows UsingSonar fishfinding Introduction Satellite windowStrength of echoes Interpreting the displayDepth Bottom typesFrequency and cone width WaterExample of shadows When to use 50 kHzWhen to use 200 kHz ShadowsWhen to use 50/200 kHz When to use MixedMinute ago Seconds ago Now KHz display 200/50 Khz display Mixed displayFish symbols Fish detection and display Where to find fishFish arches Zoom range and offset Range657 has two range modes AutoThis display is called the gain window Changing modeGain and threshold Gain windowSonar history display no split Sonar fishfinding DisplaysHistory position bar Extended history modeSonar Zoom and Full Screen Zoom displays Screen. Press to return to the most recent echoSonar 50/200 display Sonar Bottom displayBottom type Setting gain and thresholdSonar A-Scope display Fish recognitionChanging a gauge layout Gauges windowData window Selecting a Gauges layoutFuel window shows Fuel functions and displayWhat the fuel computer does Fuel windowWhen you add or remove fuel When you remove fuel Low fuel alarmBoat speed sensors Speed Log Economy Range Water speed and ground speedSpeed Log Economy Press twice, then select Fuel Fuel consumption curvesMaking a curve Start running the boat in a straight lineSelecting a curve Using a curveRenaming a curve Deleting a curveCalibration Setup enginesTo the reading of the fuel dispenser’s gauge Then press Tides window Choosing the date of the tide chartTides window shows data for the chosen date User card window has User card windowSaving data to the user card Rereading the file information 15 AISDeleting a file from the user card Sorting the file namesViewing AIS Vessels Displaying Full AIS Details Safety msgs rxAIS Windows VesselsDisplays Distress Poll 16 DSC/Buddy track windowsDeleting a boat Using the displays Displaying a boat on the chartBoat positions Creating a waypointSetting up SmartCraft Setup option menusTime see Favorites see 17-14 Simulate see Language Setup SystemAuto power off Factory resetPalette Setup ChartSetting map datum RotationMap shift Nmea datum offsetMap shift Applying a map shiftLat/lon grid Digit size Setup SonarPulse power FrequencyDgps Source Setup GPSSetup Fuel GPS SourceNum engines Setup enginesSetup tanks SourceRecord Setup TrackDistance TimeReset engine hours Setup AIS Show Dangerous OnlySetup Logs Reset total distAlarm sounds when it is on Setup AlarmsSymbol Alarm Arrival radius Anchor alarmFuel Setup UnitsTemperature Setup CommsSpeed filter Setup CalibrateTemperature filter SpeedSpeed range Setup TimeSetup Favorites Keel OffsetMode InstallationSetup Simulate SimulateGPS or Dgps antenna For GPS navigation see section Installation What comes withInstallation Options and Accessories Optional sensors and instrumentsDisplay unit 18-3 Black Yellow Blue Power/data cablePin Wire Function ConnectionsThere are two mounting arrangements Installation The display unitFlush Mounting Bracket MountingAuto power Installation Power/data cableBasic power Black Power/data cable Red Yellow Fuse 2AInstalling an antenna Installation GPS antenna Selecting an antennaDgps Source Installation Northstar petrol/gasoline sensors Installation Sonar transducerBlue Sonar cable Either Installation Other NavBus instruments Installation SmartCraftNavBus Installation Other Nmea instruments Installation Northstar VHF radioTilt and rotation for best viewing and hand Installation Setup and testEnter setup data to set up the 657 to your If the display unit is bracket mounted, adjustAppendix a Specifications Adindan Afgooye List of datumsSouth American General problems Appendix B TroubleshootingFuel consumption problems GPS navigation problemsThere is no reading for fuel economy Sonar fishfinding problemsTwin engine installation shows only one flow rate Erratic Fuel Flow readingsBottom is displayed too far up the screen Bottom is not displayedThere is a double bottom trace displayed Glossary Appendix C Glossary and navigation dataNavigation data TBMFT!COUNBSJOFDPN