IN-2
L
Lat/lon display 10-3
Lighthouse data 2-4
Local time 10-5
Loran C chains A-3
Loran C station selection 10-8
M
Magnetic bearing 10-3
Magnetic variation 10-3
Maintenance 12-1
Mark
displaying 4-2
entering 4-1
erasing 4-3
line 4-2
shape 4-2
Memory card
formatting 9-1
saving data 9-1
loading 9-2
Memory/trip clear 12-6
Memory, I/O port test 12-4
MENU key 1-4
Menu tree A-1–A-2
Mini chart cards
aids to navigation data 2-4
buoy data 2-4
chart scale 2-2
chart symbols 2-3
depth info 10-2
grid 10-2
Indices 10-2
indices 2-3
inserting 1-2
lighthouse data 2-4
nav aids 10-2
port service icons (NAVIONICS) 2-4
text info 10-2
N
Nav data display 2-5
Navigation
cancelling 7-5
multiple quick points 7-1
ports, port service 7-2
quick points 7-1–7-5
restarting 7-4
route 7-3
route in reverse order 7-3
single quick point 7-1
specific route leg 7-3
switching route waypoints 7-4
waypoints 7-2
North-up mode 2-1
O
Object 11-1
Operation mode 2-8
P
Port services
description 2-4
navigating to 7-2,11-3
Position format selection 10-4
Power on/off 1-2
POWER/BRILL key 1-3
Presentation modes 2-1
Program number 11-7,11-4
Proximity alarm 8-3
activating, deactivating 8-3
setting radius for individual waypoints 5-3
Q
Quick points
entry method 7-1
multiple points 7-1
single point 7-1
R
Range selection
plotter 2-2
Range unit 10-3
Rhumb line 10-3
Routes
connecting (two) 6-2
entering by cursor 6-2
entering through route list 6-1
entering track based 6-4
erasing 6-5
inserting waypoints on the plotter display 6-3
inserting waypoints through route list 6-2
navigating 7-3
navigating in reverse order 7-3
navigating specific leg 7-3
removing from plotter display 6-4
removing waypoints through route list 7-3
restarting navigation of 7-4
Summary of Contents for GP-1640
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