SILENT SERVICE


KEYBOARD COMMANDS:

     1,2,3,4,0: ENGINE POWER. 0 IS FULL STOP.
     D-DIVE ([RETURN] TO LEVEL OFF)
     S-SURFACE
     R-REVERSE ALL ENGINES
     T-FIRE TORPEDO
     G-FIRE GUNS (ON SURFACE ONLY)
     +-LEFT RUDDER
     *-RIGHT RUDDER
     [RETURN]-MID RUDDER
     W-PAUSE
     ?-RELEASE FAKE DEBRIS
     Z-ZOOM-ALLOWS DIFFERENT LEVELS OF COURSE PLOTTING.
     X-UNZOOM (Z AND X WORK ONLY ON MAP SCREENS)
     P-RAISE/LOWER PERISCOPE . ALSO LINES SCOPE UP WITH BOW OF SHIP.
     F-SPEEDS UP 'SIMULATION TIME'
     N-RETURN TO NORMAL 'SIMULATION TIME'
     [CTRL]+E-BLOW EMERGENCY AIR TANKS-SURFACES IMMEDIATELY
     < AND >-AIMS GUNS IN 25 DEGREE INCREMENTS
     I-IDENTIFY TARGET VESSEL (WORKS ONLY ON PERISCOPE SCREEN)
     [SPACE BAR]-RETURN TO CONNING TOWER
     A-ANGLE ON BOW-OPERATES ONLY IF SELECTED AS A REALITY LEVEL. 
DEFAULTS TO OFF, COMPUTER CALCULATES AUTOMATICALLY.


SCREEN MOVEMENT:

[SHIFT]+:
     1-MAPS
     2-BRIDGE (ON SURFACE ONLY)
     3-PERISCOPE (WHEN OPERABLE)
     4-GAUGES
     5-DAMAGE CHECK
     6-QUARTERMASTER'S LOG
     8-RESETS PATROL MAP

     NOTE: All screen movement, as well as some other commands, can be 
carried out with the joystick. experiment with it.


GAUGE DESCRIPTIONS:

     Now you must load the game and look at the gauge screen.

     In the upper left hand corner there is a dial with one 0 on it. 
This is the battery charge level. Batteries are necessary for submerging 
and cruising on surface. They are good for about 1 hour of high speed 
movement, up to 6 hours at low speeds. On the surface, they gradually 
recharge themselves.

     Directly beneath this gauge there are two lights. The left will 
light up when the battery is being charged. The right will light up when 
the battery is being drained.

     To the right of the battery gauge is another dial with numbers from 
0 to 15 on it. This is the speed in knots the sub is traveling. 20 knots 
is maximum speed on surface, while 10 is maximum underwater.

     To the right of this is a dial with numbers from 0 to 300 on it. 
This is your depth in feet from the surface. the 'P' indicates your 
periscope level (44 feet). The scope will not operate beneath the 'P'.

     To the right of the depth gauge is a box showing torpedoes. in the 
upper left hand corner of this box is the periscope indicator. black 
means it's down, green means up. the torpedoes in the box indicate which 
of the 10 torpedo tubes are ready to fire. green means ready, black 
means re-loading. it takes about 10 game minutes to re-load a tube. The 
numbers at the bottom of this box indicate how many torpedoes are left 
in addition to the ones already loaded.

     Beneath the battery gauge (on the left side of the screen) there is 
a box with three vertical rows of lights. this is the fuel gauge. as you 
use fuel the tanks fill up with water. the fuel floats on top. the 
lights indicate your fuel and water level in each of the three tanks. 
black= fuel level, white= water level. full fuel tanks can last 50-60 
days.

     To the right of the fuel level there are 2 dials, one on top of the 
other. the top one is the number of feet between your current depth and 
the sea bottom. when it reaches 0, you have run aground. directly 
beneath this gauge is the water temperature gauge. By using clod water 
you may be able to hide from the enemy ships.

     To the right of these gauges is the 'christmas tree'. these lights 
indicate the status of all hull openings. green= closed, red= open. all 
hull openings close automatically when submerged.


     Directly to the right of the christmas tree is the compass. 
underneath that is the throttle indicator, and to the right of these is 
the clock. the sweep hand indicates the minutes, and the hour is printed 
at the bottom.

     Beneath the clock is the dive bubble. the bubble in the bar will 
slide to the right or left to indicate diving or surfacing, or stay in 
the middle to indicate no vertical travel.

