Few random question about u-boats, both in game and in real life

Pisces · 08-23-18, 07:13 AM

As for time-speed-distance calculator. There is another movable tool on the map screen above the officer commands. It's has the wider tab. It's called a 'nomograph'. Place it somewhere on the map.

You'll notice 3 scales in units of time, distance and speed. Make sure you know 2 out of 3 of those. The one you don't know is the one this tool wil calculate.

Use the line tool and draw a line completely across it. Do not make the line end on the tool initially. As you won't be able to grab it with the tool in the way.

Grab 1 endpoint of the line. Re-position it on either the outermost left or right scale at the value that you know.

Grab the other endpoint and drag it so that the other known scale is intersected at the 2nd known value.

The line should now cross the unknown scale of the time,distance,speed problem. Read that value.

The line is likely to end up diagonaly. This is correct for the calculation. It does not have to be perfectly horizontal.

BTW, this is not the second (circular) dial that I mentioned in my other post. That one is the stopwatch background with U-jagd on it. It is used to determine target speed: Put periscope vertical line in front of target and reduce speed to 0. Or if you want to keep moving forward turn the periscope to bow (or stern) and turn the boat to get the view in front of the target bow and stop the turn completely. Start the stopwatch when the target bow begins to cross the vertical periscope line. The time is stopped when the target finishes moving through the vertical periscope line with it's stern. (the precise point may be out of sight) One of the curves (green, blue, red, yellow) is chosen to match the target length (75m, 200m, 150m, 100m) as close as possible. The second hand points to the target speed for that curve. If the target length is between those of the curve then take the average of the speeds of the nearest ones. (in terms of length; be mindfull that the colors are in a strange order)

08-23-18, 07:13 AM	#10
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	As for time-speed-distance calculator. There is another movable tool on the map screen above the officer commands. It's has the wider tab. It's called a 'nomograph'. Place it somewhere on the map. You'll notice 3 scales in units of time, distance and speed. Make sure you know 2 out of 3 of those. The one you don't know is the one this tool wil calculate. Use the line tool and draw a line completely across it. Do not make the line end on the tool initially. As you won't be able to grab it with the tool in the way. Grab 1 endpoint of the line. Re-position it on either the outermost left or right scale at the value that you know. Grab the other endpoint and drag it so that the other known scale is intersected at the 2nd known value. The line should now cross the unknown scale of the time,distance,speed problem. Read that value. The line is likely to end up diagonaly. This is correct for the calculation. It does not have to be perfectly horizontal. BTW, this is not the second (circular) dial that I mentioned in my other post. That one is the stopwatch background with U-jagd on it. It is used to determine target speed: Put periscope vertical line in front of target and reduce speed to 0. Or if you want to keep moving forward turn the periscope to bow (or stern) and turn the boat to get the view in front of the target bow and stop the turn completely. Start the stopwatch when the target bow begins to cross the vertical periscope line. The time is stopped when the target finishes moving through the vertical periscope line with it's stern. (the precise point may be out of sight) One of the curves (green, blue, red, yellow) is chosen to match the target length (75m, 200m, 150m, 100m) as close as possible. The second hand points to the target speed for that curve. If the target length is between those of the curve then take the average of the speeds of the nearest ones. (in terms of length; be mindfull that the colors are in a strange order) Last edited by Pisces; 08-23-18 at 07:52 AM.