Pls notice that Crimson Tide is about a modern submarine (Ohio class + Akula class)
If you really wanta modern sub simulation, try DANGEROUS WATERS. However, the game is EXTREMELY TECHNICAL (meaning that it is EXTREMELY REALISTIC in the senors) You may not be able to play it unless you have got some basic knowledge about the sub and its senors(like sonar, radar)
I cannot manage the boat in Dangerous waters and cannot find the enemy. So I decided to give up
SH3 is a WWII U-boat simulation. It is less technical and the realism is based on YOUR settings. For me, its better since the hardest job is only
1) Finding enemy
2) Manual Target motion analysis and TDC
If you want to find a copy of SH3, you can
a) Go to amazon / other online store and purchase one (if you have a account)
b) Go to local store and grab one (in case you don't have a account for amazon)
c)
edited - NS