Battle of the Atlantic

Introduction: The Battle of the Atlantic scenario simulates the German submarine and raiding campaign against Allied shipping in the Atlantic Ocean from Fall 1939 to Winter 1944. It is a two-player scenario which uses only the naval, strategic warfare and some research and production rules. Naval units are required, but it is not necessary to use the mapboard.

Record Sheets: The Battle of the Atlantic scenario uses the following record sheets specific to the scenario:

·      German Shipyard/Research Sheet; Allied Shipyard/Research Sheet

·      Capabilities Chart and Submarine and Raider Warfare Tracking Sheet

·      Victory Tracking Sheet

·      Atlantic Ocean Force Deployment Chart

Research and Production: The Axis and Allied players may invest RPs in naval research and/or production categories as set out in their Shipyard and Research Sheets. These indicate for each year the number of RPs available and the maximum number of RPs that may be placed in a single project. The number of RPs per project may be further limited by the number of naval breakthroughs already achieved (41.31B).

In addition to results generated by RP investment in naval projects, players receive the following additional results:

·      Ultra cards: Each player receives one additional Ultra card of his choice in Spring 1941 and a second additional Ultra card of his choice in Spring 1943.

·      Air Range: The Axis receive an Air Range research result in Spring 1941. The Allies achieve an Air Range research result in Summer 1940 and a second Air Range research result in Spring 1943 (these generate favorable modifiers for submarine warfare, as indicated on the Submarine and Raider Warfare Tracking Sheet, and also assist in intercepting German raiders).

·      Radar: The Allies receive a Radar research result in Summer 1940. This modifies subsequent research results for Naval DRM.

·      Air Defense: The Axis receive one Air Defense research result in Spring 1943 and a second Air Defense result in Summer 1944. These add to the air defense level of ships attacked by carrier-based air units.

Force Pools: Only naval units and the NAS on carriers are used. The starting naval forces are indicated on the Shipyard and Research Sheets for each player.

Duration: The scenario begins in Fall 1939 and ends after the earlier of

·       the first turn on or after Spring 1942 when the Allied Loss - Axis Loss (Column N on the Victory Tracking Sheet) is 10 or less, and the Allied destroyer count at the end of the Allied player turn was at or above par, or

·       the Winter 1944 game turn.

Initial Situation: Germany is at war with Britain. The U.S. is neutral until it enters the war in Winter 1941.

Order of Deployment: Germany, Britain, U.S.

Order of Movement: During each game turn Germany moves first and the Allies, including a neutral U.S., move second. The order of movement does not change in the course of the game.

Accelerating Naval Construction: Players may accelerate construction of naval units (27.7272B). BRPs spent on acceleration are recorded on the Victory Tracking Chart.

Victory Conditions

Victory is determined by the total amount by which Allied losses exceed the Axis cost of conducting strategic warfare in the Atlantic (Column Q on the Victory Tracking Chart). The Axis receive a bonus of +15 for each turn the scenario continues beyond Spring 1943; the Allies receive a bonus of -15 for each turn the scenario ends before Spring 1943.

Axis Decisive: 401 or more

Allied Decisive: 275 or less

Axis Tactical: 376 - 400

Allied Tactical: 276 - 300

Axis Marginal: 351 - 375

Allied Marginal: 301 - 325

Draw: 326 - 350

National Capabilities

BRPs are not tracked in this scenario. Germany, Britain and the U.S. are assumed to have sufficient BRPs available to use all available shipbuilding each turn. RP allocations are recorded on each player’s Shipyard and Research Sheet.

Germany

Control: Germany. Germany controls the French ports (including the captured shipyard at Lorient) from Fall 1940 through Summer 1944, inclusive.

Deployment Limits: German PB2s and the German submarine may deploy in the Atlantic SW box during the initial setup. All other German starting units must begin the scenario in port.

Raiding: Germany may raid only in Fall 1939 (using up to three PB2s, which may start the game in the Atlantic) and from Fall 1940 onwards. On-board interception of raiders is not possible in the Battle of the Atlantic scenario.

Carriers: Germany may not build carriers; no NAS are available.

Britain

Deployment Limits: The British starting ASW and transports begin in the Atlantic SW box. All other British units begin the scenario in port.

Carriers: Undamaged British carriers always have their full complement of NAS.

Withdrawals: The following undamaged ships, which are listed by factor and type, must be removed at the end of the indicated turns. These represent the historical transfer of ships to the Pacific theater. If an undamaged ship of the required type is not available for transfer to the Far East, twice as many factors of undamaged Western Allied naval factors must be transferred instead.

      Summer 1941: BB4 (fast), BC3

      Winter 1941: 2 CVL

United States

Deployment Limits: All American starting units begin the scenario in port.

American Shipbuilding: The Capabilities Chart sets out the American Atlantic and Pacific shipbuilding rates and the number of British and American CVEs which may be built each turn. American shipbuilding rates cannot be increased by the allocation of RPs in the Battle of the Atlantic scenario.

Carriers: The U.S. may not build carriers.

U.S. Entry: The United States automatically enters the war during the Axis Winter 1941 player turn.

Historical Notes

The Axis light carrier Graf Zeppelin (CVL) is not included, as it was never finished. Opposition by Goring prevented development of suitable aircraft for carrier warfare.

The British ships Valiant, Queen Elizabeth, Royal Sovereign, Ramillies, Resolution, CA2 and DD3 belong to the Mediterranean fleet and are not available for fighting Atlantic raiders. Most of these ships were deployed to the Pacific after the Japanese attack (Winter 1941).

British CA2 and DD1 begin the game in the Pacific and thus are not represented.

The Royal Oak (BB3) is not included because it was sunk in Scapa Flow on October 14, 1939, by U-47, commanded by Günther Prien.

The American carriers Wasp and Yorktown, the older battleships Colorado, Idaho, Mississippi, New Mexico, and the newer battleships Indiana, Massachusetts and Washington are not included, as historically they were deployed to the Pacific.