Andreas hi,

It has been a while since I've seen that fabulous movie.
But I would be sure he'd have been using what they call a "1936" template and a Bearing Rate Computer, being the circular slide rule you saw.

Using Bearing rate, Own Ship speed, time, and your blood group. You can some how calculate the the contact (other ship) bearing and range using a passive intercept. I'm looking for the instructions for such a circular slide rule (Bearing Rate Computer) at present.

It would make for a fascinating case study in basic applied trig.

I'll publish it online once I locate a copy or develop a step process myself.

Regards,
Gary

>>

Message: 1
Date: Mon, 13 Jun 2005 15:02:31 +0200
From: Andreas Dunker <adunker@...>
Subject: slide rule sighting

>> slide rule. Can anyone confirm this?

Best regards
Andreas