This is a trick for GATO which allows you to instantly move the submarine to any coordinate on the map without having to spend your time or the ship's fuel sailing there
To get instantly to any map coordinate:
C Goes to Chart
XXXXXXXXXX Goes to coordinates XXXXXXXXXX on Chart
The XXXXX above can be any decimal number and the two values should be separated by a comma but with no spaces in between. The first number is the East distance the second the North distance from lower left corner of Chart. 00 is the lower left hand corner of the map but the sub sinks if you go there or anywhere less than about 1010. Each Box on Chart Map is 5000 X 5000 and each hatch mark on Quadrant Map is 1000.