[in_vino_vomitus]

I have a perverse thing for avoiding the easy option [up to a point], so I usually play 100% realism, and I usually start a campaign in Dec '41. I had great difficulty with the 4 bearings method, but I've worked out a way to establish course, speed and position from sonar bearings only, using MOBO. [A thousand thanks to aaronblood].

Anyway, I've searched unsuccessfully on here for something similar. I find it hard to believe that nobody else is doing this, and I'm pretty sure my method has loads of room for improvement, but if anyone's interested, I'll try to put a tutorial together.

If anyone knows of such a tutorial on here already, I'd be grateful for a pointer. As I say, I'm pretty sure my method can be improved....