[magic452]

Looney is right about zero gyro angle shots, very accurate and easy to set up. Check Rockin Robbins Sub sim Skippers Bag of Tricks thread.

To sink more than one ship in a convoy you have to pick your targets carefully, put yourself into a good firing position and shoot fast.
Night or bad weather helps.

I can often set up two zero angle shots at the same time, Mk.14 one on low speed and the other high. Target ships in two different columns.

TDC/PK can be done the same way high and low speed. Time it right and you'll hit both about the same time before they start to slow and turn.

Take your best shoots and run like hell. TMO 1.9 is tough, no more dashing in guns a blazing. More like real life.
Do a runaround and repeat. Learn to shoot from long range 2,500m or more.

By the way GOOD gaming choice, I'll be playing SH4 and TMO for a long time.

Magic