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joegrundman · 08-24-07, 07:39 PM

Ok, there is a solution to do it. My wife and i worked this out over pancakes for breakfast.

Unfortunately it's kind of slow.

There are four situations you need to determine, and the equation is different for each.

1. AOB is port, and periscope angle is less than 180

Target course = heading + periscope angle + AOB -180

2. AOB is starboard, periscope angle less than 180

Target course = heading + 180 + periscope angle -AOB

3. AOB is port, and periscope angle is greater than 180

Target course = heading + periscope angle + AOB - 180

4. AOB is starboard, and periscope angle is greater than 180

Target course = heading + periscope angle - AOB -180

e.g. heading 240, scope angle 90, AOB starboard 60, use equation 2

240+ 180 + 90 - 60 = 090

Someone please check the solutions, right now i'm a bit surprised that equations 1 and 3 are the same. EDIT - I've tested them and they all seem to be correct

But you can see right away why the real submarines used a whiz wheel for this

08-24-07, 07:39 PM	#8
joegrundman Ocean Warrior Join Date: May 2007 Posts: 2,689 Downloads: 34 Uploads: 0	Ok, there is a solution to do it. My wife and i worked this out over pancakes for breakfast. Unfortunately it's kind of slow. There are four situations you need to determine, and the equation is different for each. 1. AOB is port, and periscope angle is less than 180 Target course = heading + periscope angle + AOB -180 2. AOB is starboard, periscope angle less than 180 Target course = heading + 180 + periscope angle -AOB 3. AOB is port, and periscope angle is greater than 180 Target course = heading + periscope angle + AOB - 180 4. AOB is starboard, and periscope angle is greater than 180 Target course = heading + periscope angle - AOB -180 e.g. heading 240, scope angle 90, AOB starboard 60, use equation 2 240+ 180 + 90 - 60 = 090 Someone please check the solutions, right now i'm a bit surprised that equations 1 and 3 are the same. EDIT - I've tested them and they all seem to be correct But you can see right away why the real submarines used a whiz wheel for this __________________ "Enemy submarines are to be called U-Boats. The term submarine is to be reserved for Allied under water vessels. U-Boats are those dastardly villains who sink our ships, while submarines are those gallant and noble craft which sink theirs." Winston Churchill Last edited by joegrundman; 08-24-07 at 10:19 PM.