Been a while since I have played stock, but I remember this C2 anomaly well. If you are using the "lock" function for targeting, it gives you a spot that's too far forward.
Assuming you are doing a 90AOB impact shot from 1000m or so out, you should:
- Lock
- When the gyroangle meter goes to 357-003, unlock
- Count 2-3 seconds, then fire. You should come up right under the engine-works.
For other approaches, the concept is the same... aim for slightly aft of the lock point.
Remember that the lock points are
not recommendations about where to shoot.
For most merchants, you want to hit under the stack, in calm weather, or under one of the forward cranes in rough seas.
For battleships, on the other hand, you'd try to go under a gun turret (because that's where they keep the kersplosion stuff), or under one of the stacks.