Unterseeboot: U-Boat Solitaire

A Torpedo token is removed for every shot, hit or miss, and only one may be fired per turn. The Type VIIC upgrade carries 14 and may fire two at once, split between two adjacent targets at Periscope Depth. A double salvo automatically triggers destroyer detection.

You may only fire one torpedo per turn. You must remove a Torpedo token in order to fire at a target.

A surface attack requires being in the target's space and sinks on 3+. A submerged attack from Periscope Depth against an adjacent target sinks on 4+. Torpedoes cannot be fired from 100m or 200m. Sunk target dice go to the Tonnage Sunk area.

If the U-boat is on the Surface and in the same space as the Target, remove a Torpedo Token from your submarine and roll a die: On a 3+, the Target is hit and sunk.

The boat has six rechargeable Main Battery tokens and three non-rechargeable Auxiliary Power tokens. If it starts the phase submerged it removes one token, and if none remain it is sunk. If it starts surfaced, all Main Battery tokens are restored. This limits how long the boat can stay hidden.

If the U-boat starts this phase submerged (Periscope Depth, 100m, or 200m), remove one Main Battery Token or an Auxiliary Power Token. If you cannot remove one of these tokens, the U-boat is immediately Sunk

Only at the Surface or Periscope Depth can the boat identify targets and fire torpedoes. Aircraft can only spot a surfaced boat. Destroyer attacks damage on 3+ at the Surface, 4+ at Periscope Depth, 5+ at 100m and 6 at 200m. Optional uncontrolled dive: at 200m with one hull token left, after surviving a destroyer attack, a roll of 1 implodes the boat.

There are four depth levels: Surface (1), Periscope Depth (2), 100 Meters (3) and 200 Meters (4).

To succeed the player must survive at least 10 patrols while tracking total tonnage sunk. Each patrol is recorded in the log book with tonnage, torpedoes fired, damage, repairs and survival.

A campaign is a series of linked games where you go out on several consecutive patrols. To be successful, you will need to: Survive at least 10 patrols

Sum the tonnage dice x1000 and consult the honours table, from 0-6000 tons (U-boat War Badge) to 43,000+ tons (Knight's Cross with Oak Leaves, Swords and Diamonds). A sunk boat is a loss whatever its tonnage.

Your victory level is determined by amount of tonnage sunk on your patrol and whether or not you survived.

Firing from the surface means automatic detection. Firing at Periscope Depth places a Searching token, and every Destroyer Phase after that rolls a search (detected on 1-3) until the boat is detected or evades. Once Detected, the destroyer attacks once per turn using the depth table. The boat evades, discarding all tokens, only by ending the phase at 200m after surviving the attacks.

Once a Destroyer begins its search, it will not relent until it has detected your U-boat or you have evaded it.

If surfaced, roll a die: 4+ not spotted, otherwise place a Spotted token. A spotted boat suffers a Strafing Attack each Aircraft Phase, damaged on 3+, until it submerges and discards the token. Submerged boats cannot be spotted.

If the U-boat is surfaced, an enemy plane will attempt to spot you. Roll a die: On 4+, the U-boat is not spotted

The game ends after Turn 20 or when the boat is sunk. At the start of any turn the player may return to base, which requires no Searching or Detected tokens, surfacing, and surviving one last Aircraft Phase. Failing to surface by the end of Turn 20 loses the game.

To successfully return to base you must: Begin the turn with no Detected or Searching tokens in the Enemy Destroyer Area; Return the U-boat to the Surface, and Survive an Aircraft Phase one last time

1 Maneuver, 2 Battery Power, 3 Target Identification, 4 Aircraft, 5 Torpedo, 6 Destroyer. Enemy aircraft and destroyers act in their own phases after the player's movement and identification.

Each turn consists of the following six phases: 1. Maneuver Phase ... 2. Battery Power Phase ... 3. Target Identification Phase ... 4. Aircraft Phase ... 5. Torpedo Phase ... 6. Destroyer Phase

At the Surface or Periscope Depth the boat may try to identify one Unidentified Target in the same or an adjacent space each turn. Roll a target die: on 1 it is a false contact and is removed; on 2+ the die is placed on the target as its tonnage in thousands of tons. Optional Big Ships: a 6 rolls again for a larger die (d8-d20) for tonnage, and ships of 10,000 tons or more need two torpedo hits.

On a 2+, place the die on the Identified Target Token to represent the target's tonnage, with each point representing 1000 tons. On a 1, you've identified a false contact

When damaged, roll once immediately: on 4+ the damage is repaired and ignored, otherwise remove a Hull token. Losing the third Hull token sinks the boat and ends the game.

To Repair the damage, roll a die: On a 4+, your crew has repaired the damage and it is ignored. Otherwise, the crew fails to repair it and you must remove a Hull Token

One Battle die handles identification, spotting, attacks and repairs, all as simple target numbers. Five Target dice sit on identified targets showing their tonnage. Optional Big Ships use a d8, d10, d12 or d20 for tonnage.

You will need a total of six of these, including 1x Battle die and 5x Tanker dice.

Each turn the boat may move one space up, down, left or right, or stay put. The four depth rows are Surface, Periscope Depth, 100m and 200m. Merchant targets sit in the Surface row, so horizontal position decides which targets are in reach.

During the Maneuver Phase, you may move the U-boat one space up, down, right, or left. You may also choose to remain in place.