Not having that much trouble detecting Diesels, but the russian Victors and Sierras are giving me a hard time.
The game is easy to learn, but hard to master.
But fun nonetheles.
My Sonar picked something up, it revealed that there were 2 Novembers and 1 Alfa.
The Novembers did not scare me, but the Alfa scare me ****less.
At the end I got lucky,
A torpedo which stayed active as the other one sunk the November kept going and eventually hit the Alfa while he was doing 42 knots trying to reach me.
And he did not pick it up on his sonar because he was just too loud.
And damn, was I reliefed.
My boat is USS Haddo, a Permit class submarine.