The new bomb fuzing needs to be an option.

[Fenrir]

Originally Posted by TheGrunch

For a cargo ship, go down to 40-50m/150ft, drop when the ship's masts are either side of the reflector gunsight. That was in a Spitfire, though. I'll have a go in a bomber of some description, now. B-25 I think.

EDIT: Same deal in the B-25. In a shallow dive, go down to about 50-60m and drop when the ship's masts fill the whole reflector gunsight frame. Bomb delay 2s in addition to the arming delay for both. The angle you drop at is quite important. Better if it's shallower, but too shallow and it'll bounce too far.

As posted earlier I can repeatably hit ships in a B-25J from 100ft (30.48m) 240mph from cockpit instuments and with 1 sec bomb delay. 150ft feels a bit high, 100ft, IMHO seems a bit safer and somewhat more prototypical.