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knight76 · 06-28-15, 09:19 AM

I seem to be having trouble getting the fast 90 attack to work out. I used to attack with the Dick O'Kane 90 degree attack setting AOB to 75 and shooting along periscope bearing - or + 15 degrees from 0 or 180. This was in silent hunter IV.

This worked out well but meant you were fixed alot of the time on attacking along a set bearing, the fast 90 attack, in the U-boat gives you the option to look around and fire at will, grab a range and shoot.

I'm not sure where I am going wrong though, I am missing from ranges as close as 500m which is practically point blank.

Here is a run down of my attack procedure.

1) I get the sonar contact and run a course to jump well in front of them then setup on the 90 degree angle, this is done from their rough plotting of the sound contact at first.

2) Next up, I sit on the surface awaiting visual contact at which point I mark his position on my map. Then depending, I either measure his speed at that point, followed by a dive to periscope depth, or I go immediately to periscope depth and get the speed when he is a bit closer.

3) Method for getting speed is to measure time interval for 3 minutes plotting positions on map. 3 minutes due to the game being in metric.

4) As I have now plotted his course more accurately I re-plot his track and re-align to the new 90 degree angle.

5) I await his arrival at bearing 15 or 345 and shoot.

Now, here is some pictures of my attack setup which will show you my dials, map screen etc.

Pic 1: Shows my map picture of my step, im on the 90, just waiting now. I have set his speed, and re-plotted his track etc.

Pic 2: Target has arrived in my strike zone and is a bit wider than my plotted track, this would throw out my 90 degree setup maybe 1 degree I think. Also, I have moved in to improve my odds and am now sitting about 600m from the targets plotted course line.

Pic 3: These are all my settings, I am not looking directly at 0 degrees in my periscope here, but when I am, the gyro thingy is pointed at 0, and the AOB is at 90 degree to the direction the target is traveling, in this example, target is traveling right to left in front of me. You can also see my torpedo settings, these are just to set the torps to run shallow with impact detonators and that is it. It is early war. Speed was measured at 8 knots. Torp tubes have been opened also so this is not contributing to the situation. Toprs launch immediately.

Now, even though I am sitting at 600m from the targets track where it intersects my perpendicular track, in this case I set range to 700 as I found previously when I had set it to exactly as measured by the ruler, I had missed and thought the range may have been off. I manually took the range with the statimeter thing (ID target, measure mast height in periscope) once and it measured longer than the ruler. That shot missed aft so I thought my range via ruler may have been too short.

So that pretty much sums up my fast 90 technique, but I tend to miss most shots with it and I have no idea why. On my current patrol I have sunk 6 ships, all but 1 of them were via deck guns which I can get away with early war. But I would really enjoy hitting with a few more torps.

In the example above, I did hit with one but it was a dud, the second missed just barely aft.

I'd appreciate some corrective advice if I am doing something wrong or can improve my setup technique.

06-28-15, 09:19 AM	#1
knight76 Watch Join Date: May 2005 Posts: 16 Downloads: 17 Uploads: 0	Fast 90, where am I going wrong. I seem to be having trouble getting the fast 90 attack to work out. I used to attack with the Dick O'Kane 90 degree attack setting AOB to 75 and shooting along periscope bearing - or + 15 degrees from 0 or 180. This was in silent hunter IV. This worked out well but meant you were fixed alot of the time on attacking along a set bearing, the fast 90 attack, in the U-boat gives you the option to look around and fire at will, grab a range and shoot. I'm not sure where I am going wrong though, I am missing from ranges as close as 500m which is practically point blank. Here is a run down of my attack procedure. 1) I get the sonar contact and run a course to jump well in front of them then setup on the 90 degree angle, this is done from their rough plotting of the sound contact at first. 2) Next up, I sit on the surface awaiting visual contact at which point I mark his position on my map. Then depending, I either measure his speed at that point, followed by a dive to periscope depth, or I go immediately to periscope depth and get the speed when he is a bit closer. 3) Method for getting speed is to measure time interval for 3 minutes plotting positions on map. 3 minutes due to the game being in metric. 4) As I have now plotted his course more accurately I re-plot his track and re-align to the new 90 degree angle. 5) I await his arrival at bearing 15 or 345 and shoot. Now, here is some pictures of my attack setup which will show you my dials, map screen etc. Pic 1: Shows my map picture of my step, im on the 90, just waiting now. I have set his speed, and re-plotted his track etc. Pic 2: Target has arrived in my strike zone and is a bit wider than my plotted track, this would throw out my 90 degree setup maybe 1 degree I think. Also, I have moved in to improve my odds and am now sitting about 600m from the targets plotted course line. Pic 3: These are all my settings, I am not looking directly at 0 degrees in my periscope here, but when I am, the gyro thingy is pointed at 0, and the AOB is at 90 degree to the direction the target is traveling, in this example, target is traveling right to left in front of me. You can also see my torpedo settings, these are just to set the torps to run shallow with impact detonators and that is it. It is early war. Speed was measured at 8 knots. Torp tubes have been opened also so this is not contributing to the situation. Toprs launch immediately. Now, even though I am sitting at 600m from the targets track where it intersects my perpendicular track, in this case I set range to 700 as I found previously when I had set it to exactly as measured by the ruler, I had missed and thought the range may have been off. I manually took the range with the statimeter thing (ID target, measure mast height in periscope) once and it measured longer than the ruler. That shot missed aft so I thought my range via ruler may have been too short. So that pretty much sums up my fast 90 technique, but I tend to miss most shots with it and I have no idea why. On my current patrol I have sunk 6 ships, all but 1 of them were via deck guns which I can get away with early war. But I would really enjoy hitting with a few more torps. In the example above, I did hit with one but it was a dud, the second missed just barely aft. I'd appreciate some corrective advice if I am doing something wrong or can improve my setup technique. __________________ Wife didnt appreciate it when recently whilst she was talking i quiped.....\"rig for silent running\".