Originally posted by Rino
I think a U-boat that could catch a 30 knot plus task group would be
a fascinating vehicle to observe.
Since the submarines would be an individual player operated unit, it would spawn like a PT boat. Either you could scout in a plane and spot an enemy CV group yourself, or listen to scout reports from other players on your country channel. Then you look and find the submarine spawn point that gives you the best chance of a fairly quick and sure intercept, and you spawn there and let the CV group come to you. It isn't like submarines actually chased down armed naval vessels in World War II anyway, they laid in wait or patrolled the shipping lanes and took positions in order to let the enemy come to them. And the Germans use Focke Wulf 200 Condors to scout in the Atlantic.
Also, the submarine, because of the stealth and power factor, would be a perk item, you'd have to earn perks in PT boats or maybe as a ship gunner. Figure a submarine would have between 16 and 24 fish, with 6 forward and 4 aft tubes, similar to a Tang class sub. With that, you could take out the CV and the cruiser, and maybe a couple of the destroyers. The CV group would have to have some sort of ASW capability, maybe the ability to spot the sub via SONAR, RADAR, and visual, along with possible air scouting. Then the group would change course and engage the sub with guns on the surface or depth charges. Sinking the sub would also be a way to earn perks to get a sub with. Many of the old diesel/electric boats were faster on the surface, so the speed on the surface would be an incentive for the sub operator to run on the surface, besides charging the batteries to operate submerged. That would give the group a chance at spotting the sub on the surface. Once the sub is forced to dive, it can't out run the group, it must outsmart it or out maneuver it. Or get really brave and try to shoot its way out with torpedos. The very low profile of a sub would make it hard to hit on the surface, and with a 5" deck gun, it could duke it out with 1 or 2 destroyers.