You can also use the compass and arrow within as a temp line. You can also use the compass and protractor tool to get a rough course using the WO reports if surfaced (he calls out range and bearing). But remember, there is a margin of error if the seas are rough and the target is zig-zag'ing.
Magui3.3 has new tools using bearing charts and firing angles if speed and course are known. Tried it last night. It worked. Just need more practice.
