Prologue

   Imperial Japan reached her limits. Highly progressive Japanese economy, start to felt the shortage of natural resources. Only option to avoid the Great Depression is a aggressive expansion. As a reaction on Manchuria invasion, United States set a many restriction on oil export to Japan. USA goverment create pression on US Navy to once more recheck the Plan Orange. Japan attacked Philippines and Indonesia few days later, starting the Pacific War in April'32. After Japanese aggression US forces started to execute Plan Orange. Long and slow mobilization of entire fleet, is expected around end of the year, when main fleet will sail to decisive battle with Japanese Navy. Meantime submarine forces have to prevent operations and reduce the enemy forces.