SUB HUNT
Intellivision Cartridge Instructions
(for 1 players)

TO SUB SQUADRON: Enemy convoys approaching...All have destroyer escorts...Station
subs at sea...Stalk your targets...Fire torpedoes...Evade surface gunnery and
depth charges...Sink all ships...Good hunting!

OBJECT OF THE GAME

You control 4 submarines, one at a time. Your targets: 6 convoys, which are
crossing the open sea. Navigate them, sight ships through the periscope, then
fire your ready torpedoes. Take evasive action to escape hits from deck guns and
depth charges. Sink the ships before they can reach a safe harbor and form an
almost-unstoppable invasion force to attack your home base.

CHECK YOUR CONTROLS

Top Side Buttons: Fire Torpedoes
Bottom Side Buttons: Reverse Engines

Disc controls Runner
Left Side: Port
Right Side: Starboard

Keypad 1-5 set skill level & Engine Speed
1 = Skill *** / Stop Engines
2 = Skill ** / Engines 1/4
3 = Skill * / Engines 1/2
4 = Skill **** / Engines 3/4
5 = Skill ***** / Engines Full

Speed

Keypad 5 = Return Key
Keypad 6 = Dive
Keypad 7 = Surface
Keypad 8 = Sonar On/Off
Keypad Clear = Select Submarine
Keypad 0 = Stop At Sea All Subs
Keypad Enter = Stop At Sea Active Sub

GET READY...
Press RESET.  You see the SUB HUNT Title Screen.

Set the game skill level:

Press * (3) for the Lieutenant's Game (easiest level)
Press ** (2) or the Disc for the Lt. Commander's Game
Press *** (1) for the Commander's Game
Press **** (4) for the Captain's Game
Press ***** (5) for the Admiral's Game (hardest level)

Note: for more info about skill levels, see below.

HOW TO PLAY SUB HUNT

Phase One: Deploy Submarines

When you select the skill level (see above), the ocean map appears.

At the top of the screen (north) is the Enemy Staging Harbor. To the right
(east) is your Home Base. Just to the left of your Base are your 4 Submarines.
On the far left (west) of the screen is the Convoy Location.

In a few seconds, the first of six enemy convoys appears at the west edge of
this Ocean Map, heading eastward. Press SELECT [CLEAR] to activate a sub. Touch
the left side of the Disc to start it moving toward the convoy.  Then send out
your remaining subs. Press SELECT [CLEAR] to turn a vessel dark, then deploy it
toward the area between the convoy and its staging harbor destination.

All subs stop when the first battle begins. SELECT sub nearest the convoy. Guide
it by touching the Disc edge (press top to go North, bottom to head South, etc.)
Intercept the gray ship figure as fast as you can.  When you contact the enemy,
both ships start flashing, and it is time to start...

PHASE TWO: General Quarters!

The screen now shows the situation on your "sonar map". You are still east of
the approaching convoy.

DEPTH GAUGE (marked "D"). In 20' Increments.  At far left, fully submerged.  At
far right, fully surfaced.

RUDDER (marked "R"). Shows rudder position relative to present heading.  At far
left, hard to port.  At far right, hard to starboard.

SPEED (marked "S"). Shows current sub speed. At far left, sub is in reverse.  At
far right, full speed ahead.

TORPEDOES. Show current status. Green means armed, ready to fire. Red means
torpedo tub not yet loaded.

YOU MUST SELECT AN ENGINE SPEED TO START MOVING TOWARD YOUR TARGETS. At long
range, press FULL [5] to move at Full Speed. When you close in, and during your
attack on the convoy, you should proceed at a slower speed. When you touch an
engine room Telegraph symbol [1 to 5 on the KEYPAD], you start to move at that
speed. To go into reverse, keep pressing either lower action button. To resume
forward speed, release the button.

NOTE: Surface speed is about 25% faster than submerged speed.

NOTE: Your rudder is more responsive at every higher speed. When you are
stopped, the rudder does not change sub's direction at all.

ATTACK STRATEGY When you get near the convoy, your sub flashes more slowly. You
are now almost within visual sighting range. Submerge to periscope level at this
point, by pressing DIVE [7] ONE TIME. Every time you press this key you dive 20
feet deeper. The sky color darkens slightly when you go from the surface to
periscope depth. Destroyers can also detect your location at this range if your
sonar is on. Turn

your sonar OFF [9] if you want to mount a sneak attack!

A destroyer always leads the formation. At the 3 highest Skill Levels, each
convoy includes two destroyers. If you're sighted, the escort ship leaves the
convoy and chases you, firing its deck guns if you are surfaced, and dropping
depth charges if you are submerged. The Destroyer tends to stay behind you, and
you cannot outrun it. Try to torpedo the destroyer as it approaches you. If you
miss, dive as deep as you can, stop the engine and turn off the sonar (because
either of them give away your position). After a while, the destroyer may give
up the hunt and return to escort portion. Depth charge sounds get fainter. When
your sub starts flashing at a faster rate, press RETURN [6] to circle around in
front of the convoy. When you see the ocean map again you can start another
attack.

NOTE: You cannot use RETURN [6] to escape when you're in close- range battle
position. You must be far enough from the convoy so your sub is flashing at the
fast, long- range rate.

WHAT YOU CAN SEE

When you're near the convoy, you can see the ships through the periscope. You
also see their position on the sonar map, as dots that are dimmer and smaller
than your flashing sub figure. With some practice, you can relate these sonar
blips to the periscope images, so you can maneuver to attack each sub in turn.

You see the ships either from the side or head-on, depending on the approach
direction. If a ship looms very large on the periscope, then disappears, it
means you passed it. Press either Lower Action Button to go into Reverse. The
target ship will probably reappear.

TORPEDO ATTACK!

When either of the torpedo symbols is green, you can fire one torpedo.

It takes a few seconds to reload the empty torpedo tube.  During that reload
time, the torpedo indicator turns red.  There is no limit to the number of times
torpedo tubes will be reloaded.

TO FIRE A TORPEDO, PRESS EITHER TOP ACTION BUTTON. Your maximum range is about
halfway to the horizon, seen through the periscope.

The torpedo direction is set at the center notch of the periscope view when you
press a "Fire" button.

You MUST be on the surface or at periscope level to fire torpedoes.

GAME OUTCOME

If you sink 36 ships you win the game. The count of sinkings is shown at the
left of the periscope view. When you win, you get a spirited victory salute --
you're a naval hero! You can also win by sinking so many enemy ships that they
cannot form an invasion force to attack you.

The convoys' primary destination is the STAGING HARBOR. Although you can't see
them, 3 destroyers are waiting there. As soon as enough surviving ships arrive,
an invasion fleet forms, consisting of 3 destroyers and 3 troopships. If there
are not enough convoy ships arriving to make up this invasion force, they will
just be held in the harbor until enough survivors get past your subs. The
invasion fleet appears as a dark shape, then moves out of the staging harbor,
heading for your home base.

You MUST sink all ships in this fleet before they arrive at your home base. It
will be very hard to sink 3 destroyers, but this is your last chance to avoid
defeat. If the invasion force reaches your home base, the land mass changes
color, and the game is over.

MORE ABOUT SKILL LEVELS

The skill level you select at the start of the game affects the play a great
deal. At higher skill levels (3, 4 and 5), the destroyer escorts are much
tougher in battle. There are two of them in every convoy. Their deck guns and
depth charges are more accurate, and they are able to find you more often, even
when you dive deep. Also, the convoys appear more frequently and move faster!

DEFENSIVE MANEUVERS

If the destroyer spots you, it will leave the convoy to attack your sub with its
deck guns and depth charges. Don't try to fight the destroyer on the surface!
Dive to maximum depth by pressing DIVE [7] repeatedly, until your depth gauge
needle is all the way to the left side. You hear the depth charges and see the
picture jiggle from the concussion. You can't outrun the destroyer, especially
under water.

A good strategy is to shut off your engine AND your sonar. You'll be motionless
under the sea, and without the sonar blips that show you where the surface
vessels are -- but this will deprive the destroyer of noise-making clues what
will give your position away. If depth charges persist, and seem to be very
close, start up the engine at full speed for a short time, then stop again. Keep
the sonar off until depth charges stop. Wait a few seconds, then press SONAR to
see where your enemy is located.  If you restart sonar and engines too soon, the
destroyer will come back and renew its attack, and you might have to dive and
hide again.

When the convoy moves a long distance away from you, your sub figure starts
flashing faster. Press RETURN to go back to the big map. Now you can start
another attack. REMEMBER, YOU CAN'T USE THE RETURN KEY WHILE YOU ARE WITHIN
ATTACK RANGE!

SUMMARY OF CONTROLS AND WHEN THEY ARE USED

1 Preparation for Game -- Game Title on Screen

Select easiest Skill Level: Press * (KEYPAD 3)
Select Skill Level 2: Press ** (KEYPAD 2) or DISC
Select Skill Level 3: Press *** (KEYPAD 1)
Select Skill Level 4: Press **** (KEYPAD 4)
Select Skill Level 5: Press ***** (KEYPAD 5)

2 Deployment Phase -- Large Map on Screen

Select Active (dark) Sub: Press SELECT (KEYPAD CLEAR)
Steer Active Sub: Press DISC edge at desired direction
Stop All Moving Subs: Press STOP ALL (KEYPAD 0)
Stop Active Sub: Press STOP ONE (KEYPAD ENTER)

3 Battle Phase -- Sonar Map and Periscope on Screen

Stop Engine: Press STOP (KEYPAD 1)
Go ahead 1/4 Speed: Press 1/4 (KEYPAD 2)
Go ahead 1/2 Speed: Press 1/2 (KEYPAD 3)
Go ahead 3/4 Speed: Press 3/4 (KEYPAD 4)
Go Full Speed ahead: Press FULL (KEYPAD 5)
Reverse Engine: Keep Pressing either LOWER ACTION BUTTON
Steer Sub: Press DISC; Left side to Port; Right side Starboard
Submerge 20 Feet : Press DIVE (KEYPAD 7)
Rise 20 Feet: Press SURFACE (KEYPAD 8)
Turn Sonar ON or OFF: Press SONAR (KEYPAD 9)
Return to big map for new attack: Press RETURN (KEYPAD 6)
Fire Torpedo: Press either TOP ACTION BUTTON

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(c)1981, 1998 Intellivision Productions, Inc.
