[onelifecrisis]

How to get a firing solution using the U-Jagd Tools in the OLC GUI

Speed

To get the speed of a ship you need to first identify it and then move directly towards it at slow speed. The easiest way to do this is piont the scope somewhere in front of the target and click the CE's Heading to View order.

Before measuring the target speed, check these three things:

1. The target is more or less directly ahead of you i.e. the bearing shown in the centre of the scope, or UZO, is near to 0 when the scope is pointed at the ship. This doesn't need to be exact. Anywhere between 330 and 030 is fine.
2. You are moving slowly (check your speed is 2 knots or less).
3. Your are not turning (check your rudder is at exactly 0 degrees).

Once all these things are done, point the scope in front of the vessel and when the bow of the vessel touches the vertical line down the centre of the scope, start the U-Jagd Chronometer. When the stern of the vessel crosses the same line, stop it. You must not move the scope left or right, nor turn your U-boat, inbetween starting and stopping the chrono. You can lower and raise the scope if you like (useful when measuring the speed of a slow ship) but be sure not to miss the ship's stern crossing the line!

Once the chrono is stopped you can read the target's speed by looking at the scale that matches the length of the target (100m, 150m, or 200m). If the target it, say, 125m, just average the readings from the 100m scale and the 150m scale. If it is, say, 75m, use the 150m scale and divide the result by two. You get the idea, I hope.

Note that the direction the target is moving in makes no difference. The vessel can be moving towards you or away from you at any angle and this will still work.


Range

Again, the target needs to have been identified.

I will refer to the rings on the range/AOB finder as Basis, Range, Marks and AOB.

The Basis ring is the outer ring, with metres marked up to 300.
The Range is the ring just inside that, and is marked in hundreds of metres (so the 2km mark is labelled "20" for example).
The Marks ring is next, and shows numbers up to a maximum of 30.
And finally, the innermost ring is the AOB ring, with values up to 90 degrees.

To ascertain range to the target lock the scope to it, line up the bottom of the target ship with the horizontal line across the centre of the attack scope, and lower the range/AOB finder. Now count the number of vertical marks to the top of the ship's mast. Now rotate the Marks ring until the number of marks you counted lines up with the "90" mark on the AOB ring. Once this is done the range to the target (shown on the Range ring) will be lined up with the point on the Basis ring which corresponds to the "Mast(x2)" value shown the recognition manual.


AOB

Once you have found the range, you need to line up the range to the target (on the Range ring) with the Length of the target (on the Basis ring) to get the AOB. If you've just used the range/AOB finder to get the range then a nice easy way to get ready to measure the AOB is to click-and-hold on the Basis ring at the point where it equals the "Mast(x2)" value, and drag it around until your mouse is pointing at the place on the Basis ring which equals the "Length" value, then release. So for example if the ship has Mast(x2)=30m and Length=75m, you would click-and-hold on the basis ring at the 30m mark, drag your mouse to the 75m mark, and release.

Now that range to target is aligned with the target length on the range/AOB finder, you can get the AOB. Count the number of horizontal marks between the centre line and either end of the target, and the AOB (on the AOB ring) will be lined up with that number of marks (on the Marks ring).