[Shelton]

Originally Posted by joegrundman

OK, start with your heading. Add the periscope angle. Then add the AOB if it's starboard or subtract the AOB if it's port.

E.g.1. your heading 000, periscope angle 090, AOB starboard 90, target course =180
E.g.2 heading 055, scope angle 235, AOB port 25, target course = 055+235-25=290-25=265

In your example, 240, 90,starboard 60, target course =240+90+60=390=030

You can also draw it on the map using the protractor tool

But easiest of all is to build yourself a proper KM or US whiz wheel and solve the problem in seconds without ever having to think about it. You can also use it to plot a course that will give you the desired firing position

http://www.subsim.com/radioroom/show...ght=whiz+wheel

thanks for the tips and the link as well!