SUBSIM Radio Room Forums - View Single Post - Newbie looking for etchasketch's AoB wheel

Puster Bill · 02-19-08, 06:39 PM

My advice to you is instead of getting the AOB wheel, go ahead and download Hitman's Kriegsmarine Whiz-Wheel. The thread is here:

http://www.subsim.com/radioroom/showthread.php?t=114351

This is the side of the wheel that would correspond to the wheel you reference:

It's based on what U-boat commanders actually used. Here is a picture of an actual Kriegsmarine AOB/Course wheel:

The bonus is that the backside of Hitman's wheel is the circular slide rule/"Omnimeter" that roughly corresponds to the US SACF/IS-WAS version. It wasn't present in real life, it appears the Germans used linear slide rules for their calculations, but it is *MUCH* easier to make a circular slide rule than a linear one (trust me!). Here's a pic of the backside:

There is an excellent set of instructions on how to use Hitman's wheel here:

http://www.subsim.com/radioroom/showthread.php?t=126824

You can use it to find AOB using a couple different methods, target course, find your distance to target track and the speed you need to get to an optimum firing position, the speed of the target in a couple different ways, and a bunch of other very useful things.

02-19-08, 06:39 PM	#2
Puster Bill Grey Wolf Join Date: May 2006 Location: BA8758, or FN33eh for my fellow hams. Posts: 833 Downloads: 0 Uploads: 0	My advice to you is instead of getting the AOB wheel, go ahead and download Hitman's Kriegsmarine Whiz-Wheel. The thread is here: http://www.subsim.com/radioroom/showthread.php?t=114351 This is the side of the wheel that would correspond to the wheel you reference: It's based on what U-boat commanders actually used. Here is a picture of an actual Kriegsmarine AOB/Course wheel: The bonus is that the backside of Hitman's wheel is the circular slide rule/"Omnimeter" that roughly corresponds to the US SACF/IS-WAS version. It wasn't present in real life, it appears the Germans used linear slide rules for their calculations, but it is MUCH easier to make a circular slide rule than a linear one (trust me!). Here's a pic of the backside: There is an excellent set of instructions on how to use Hitman's wheel here: http://www.subsim.com/radioroom/showthread.php?t=126824 You can use it to find AOB using a couple different methods, target course, find your distance to target track and the speed you need to get to an optimum firing position, the speed of the target in a couple different ways, and a bunch of other very useful things. __________________ The U-Boat Commander of Love Last edited by Puster Bill; 02-19-08 at 07:20 PM.