While in-game base failure rate is much less than was actually experienced in the early war period, opting for dud torpedoes may cause any of your torpedoes to malfunction. The failure rate was high with torpedoes detonating premature or failing to detonate at all. Opting for longer ranged sensors will cost the player 6 points of realismĪt the outset of World War Two the standard Mark 14 torpedo had never been properly tested under field conditions.Opting for realistic sensors will reduce the range for both SONAR and RADAR.Both were much more limited as to range than modern units. Using map contact updates will cost the game 10 points of realism.ĭuring the World War Two era RADAR and SONAR were still very much cutting-edge technologies.In real world situations the submariners themselves had to keep track of all of these elements and chart them if they wanted them to appear. If available and active SJ surface radar also pinpoints any vessels detected. In the easy mode the game's navigation map is continually updated with the sub's location and the location of any visible vessels or airplanes.
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While at sea refueling was historically possible, it's not been built into the game. Submarines were limited as to range by the amount of diesel fuel they could carry. Opting for unlimited oxygen will cost the player 8 points of realism.With limited oxygen skippers must surface their boats periodically to vent CO2 and re-supply with fresh air.(CO2) With time the air will become un-breathable affecting the performance of the crew and even leading to their deaths. When submerged, submarine crews use oxygen (O2) and generate carbon dioxide. Opting for unlimited compressed air cost the player 2 points of realism.If the compressor becomes damaged one may run out of compressed air making resurfacing problematic. Having limited compressed air means that the submarine's on board compressor must run to replenish compressed air supplies while surfaced.Submarines used compressed air to empty their ballast tanks and bring their boats to the surface. Opting for unlimited batteries costs the player 23 points of realism.Having limited batteries means that skippers must determine when and for how long they can run submerged before having to come up and recharge their batteries.When submerged (and often when surfaced) they were actually driven by electric motors powered by batteries that needed to be recharged by these diesels.
World War 2 era submarines were powered by diesel engines which required air intake in order operate.
Among these options are: Limited Batteries