SUBSIM Radio Room Forums - View Single Post - The Hunt: An illustrated example of how to sink a ship

Darksun · 09-15-08, 04:49 PM

This is an easy alternative to the 3:15 rule.

If you are doing 100% realism I highly recomend OneLifeCrisis mod. If you don't have it, you can still use it's method for determining the speed of a target you can see.

I order to use it, you need to time the ship moving past a fixed wire like the one in the periscope. In order to work your speed needs to be accounted for. You can either come to a dead stop (good luck) or you can point your boat right at (or away) from the target.

You need an AOB that's somewhat off to the side of the ship. 90 works great. The magic of this method is that as long as the ship isn't heading right toward or directly away from you, it works. Any AOB that's not 350-10 or 170-190 will work.

Put the center line of the scope right in front of the ship. When the bow touches, start the clock. Don't move the scope! When the end of the stern is just passing the wire, stop the clock.

Speed in Knots = 1.94 x ship length / time in seconds

09-15-08, 04:49 PM	#84
Darksun Sailor man Join Date: May 2005 Posts: 49 Downloads: 0 Uploads: 0	Math trick to determine speed. This is an easy alternative to the 3:15 rule. If you are doing 100% realism I highly recomend OneLifeCrisis mod. If you don't have it, you can still use it's method for determining the speed of a target you can see. I order to use it, you need to time the ship moving past a fixed wire like the one in the periscope. In order to work your speed needs to be accounted for. You can either come to a dead stop (good luck) or you can point your boat right at (or away) from the target. You need an AOB that's somewhat off to the side of the ship. 90 works great. The magic of this method is that as long as the ship isn't heading right toward or directly away from you, it works. Any AOB that's not 350-10 or 170-190 will work. Put the center line of the scope right in front of the ship. When the bow touches, start the clock. Don't move the scope! When the end of the stern is just passing the wire, stop the clock. Speed in Knots = 1.94 x ship length / time in seconds __________________ "[A submarine's] seaworthyness is unlimited and is, in this respect, in a stronger position than surface ships..." - U-Boat Commander's Handbook.