SUBSIM Radio Room Forums - View Single Post - Is this a good way to find course and speed?

conura · 07-20-18, 08:50 AM

Hey all,

I've watched quite a few tutorials for how to do this on real navigation/manual tdc and the one that makes most sense to me is to take the range and bearing of a ship, start the timer, then take the range and bearing again in exactly 5 minutes. With this information I have the ships course, and using the distance / time / knots conversion chart the speed too.

With this, I'd then go flank speed, and set myself up ahead of the vessel, submerge, and wait til I have a 90 degree AOB.

I often find the speed is a little off, but this is probably my not being very precise with everything. Is this a good way to get this information? Is this the correct method?

07-20-18, 08:50 AM	#1
conura Swabbie Join Date: Jun 2018 Posts: 14 Downloads: 38 Uploads: 0	Is this a good way to find course and speed? Hey all, I've watched quite a few tutorials for how to do this on real navigation/manual tdc and the one that makes most sense to me is to take the range and bearing of a ship, start the timer, then take the range and bearing again in exactly 5 minutes. With this information I have the ships course, and using the distance / time / knots conversion chart the speed too. With this, I'd then go flank speed, and set myself up ahead of the vessel, submerge, and wait til I have a 90 degree AOB. I often find the speed is a little off, but this is probably my not being very precise with everything. Is this a good way to get this information? Is this the correct method?