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JRC JLR-7500 Instruction Manual: Creating Routes

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Memo
· Great-Circle Sailing: The shortest distance from the current position to the waypoint
can be used, but the bearing will be different from that determined on a nautical chart,
and will change during movement.
· Rhumb line Sailing: Sailing can be performed directly from the current position to the
waypoint, without changing bearing.
The ship bearing will match that obtained by drawing a straight line on a nautical chart
between the current position and the waypoint.
· Great-Circle sailing is generally used for long distance sailing, as it results in a shorter
route than that obtained in Rhumb line sailing.
4.5.2

Creating Routes

· To create a route, decide the route number and select, in order, the waypoints to be used as
way points.
· The same waypoint cannot be selected in a continuous manner.
· Up to 100 routes can be created.
· Up to 512 waypoints can be set on 1 route.
Procedure
1.
Press
,
2.
Move the cursor to the number you wish to register, and press
waypoint entry screen.
Please refer to "4.8.2 Moving the Cursor to an Unregistered Number" for more details.
Move cursor to number you wish to register
3.
Press
to display the waypoint list.
4.
Move the cursor to the waypoint number you wish to register, and press
Refer to "4.8.1 Moving the Cursor within a List" for details regarding cursor movement.
5.
The waypoint information screen will be displayed. Select the item you wish to enter with the
numeric keypad, and enter the waypoint information.
Please refer to "4.5.1 Displaying the Route List" for details.
Select "7. DETAIL" to set the TURN RATE, turn radius, or time zone. This is only used for
routes shared with ECDIS.
6.
Press
"ENTRY".
7.
The screen will return to the route information screen where the waypoint is registered. To
continue setting waypoints, repeat steps 4 to 6 above.
4-42
, and then
to display the route list.
Waypoint Entry Screen
to switch to the
Enter First
Waypoint
.

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