Key			Function

Global Keys

F1			Control Room Screen
F2			Periscope Screen
F3			TBT screen
F4			Bridge Screen
F5			Chart Screen
F6			TDC Screen
F7			Gauges Screen
F8			Status/Damage Screen
F9			Radar Screen
F10			Log Book
+			Increase Time Rate
-			Decrease Time Rate
ENTER			Normal Time 1/1
0			All Stop
1...5			Engines Ahead 
6...9			Engines Back
Right Arrow		Right Rudder
Left Arrow		Left Rudder
Up Arrow		Dive Planes Up
Down Arrow		Dive Planes Down
Keypad 5		Straight and Level
B			Blow Tanks
S			Surface
P			Periscope Depth
C			Crash Dive
H			Heading to view
V			View to heading
R			Radar Depth
BackSpace		Repeat Last Message
Alt-1..0		Fire Tubes 1..10
Alt-D			Detail Level Dialog
Alt-T			Padlock View
Alt-S			SJ radar toggle
Alt-A			SD radar toggle
ALT-P			Periscope Up-Down
Alt-Q			Quit to DOS

Chart Screen

Z			Zoom In
X			Zoom Out

TBT Screen
Periscope Screen

SPACE			Select/Deselect Target
Z			Zoom
T			TDC Gauges
N			Nav Gauges
<			Rotate Left
>			Rotate Right