Quote:
Originally Posted by Pisces
Sorry, this has to be corrected. The TDC does not show the actual target course anywhere but through the tactical map itself (if map-updates are enabled in realism settings). The (azimut) dial shows the direction towards the target relative to your bow. In English we would call this 'bearing'. When the little 1/0 switch is to 1 it should be identical to your periscopes/UZO viewing direction. This is the setting you would normally use. If the switch is set to 0 you can manually enter a direction. But there is little reason to.
As can be seen in the text box, the crew has found (about an hour ago) a contact on (azimut) bearing 304. Which after you turn clockwise from the bow ends up at 56 degrees left of the bow (as a full turn is 360 degrees). So 56 port or red. You would confirm this by turning the periscope/UZO (which only shows bow-relative directions) there and see the dial reflect this.
That is all correct.
In order to set the 3 dials below you need to set the 1/0 switch to 0 temporarily. Once set it should be returned to 1 to re-enable updating the AOB solution based on periscope/UZO direction. Speed and distance will not be updated automatically by turning or locking the periscope/uzo.
2: Distance can be measured with the periscope after successful identification of the ship, noting that in the recognition manual and then calculation of distance using the stadimeter function. If you are on the surface and the watch officer is out you can also ask for the range to the nearest target. Don't be fooled though, it being shown 2nd place does not mean it is important to get a hit. If you shoot the torpedo forward or backwards within only a small gyro angle(torpedo turn is <20 degrees) it's setting is almost meaningless. Only for close range shots (<1km) with large torpedo turn angle (gyro angle>30) it becomes important to get it ballpark-right.
3: Angle on (the target) Bow. As said by John Pancoast, it is the direction from the target to you, from his point of view. It's the bearing to you seen through his periscope or whatever kind of binocular mount. You can either guess it by visual estimation. Make sure you can identify if the target is pointing away or towards you. And so if the AOB is smaller or greater than 90 degrees. After having plotted the position of the target for a while you may have found it's course and current position. Then you can measure this angle on the map drawing from it's course to your position. There are also graphical user interface mods which include a ring mechanism on the periscope which allows you to calculate this from apparent height and width measurements. If you want to know about this search for Range and AOB finder (or RAOBF for short)
4: Together with the AOB this is the most important setting to get the torpedo lead onto a moving target. You can estimate this by eye, but you may not be so succesful. You can measure this if you know the length of the target. Be at a complete stop and put the periscope line right in front of the target. Or set the periscope forward to 0 and turn boat to have the bow just in front of the target. (Then you can keep moving) Time the passage with a stopwatch. Divide the length in meters by the time in seconds. Then as a simplification you can double it. But multiplying by 1.944 would get the correct speed in knots. Of course you can also calculate this from the distance between plotted map positions if you know the time in between. Plotting in intervals of 3 minutes 15 seconds makes this much easier, as every 100m movement equals 1 knot. A real world calculator is handy, but some mods provide a nomograph tool which only takes placing a properly placed diagonal line across the known distance and time to get the speed.
The other 2 dials on the bottom are the gyrocompass. Which as said above indicates the bearing the torpedo will steer to after it leaves the tube. The dial on the left is showing the full gyro angle in a 360 degree circle. The most right dial is showing the single digits (0-9) and fraction of the gyro angle to read it more precisely.
Then there are dials on the right middle section. Those are for setting:
torpedo depth
switch for selecting magnetic or impact detonator
slow/medium/fast speed of the type 1 torpedo
torpedo tube selector
salvo angle
And ofcourse the top torpedo tube status indicators and firing button.
The game provides the notepad function to set up a manual torpedo attack. But I think it is better to understand the meaning of the dials on the attack-map and learn how to measure the various things by hand. The notepad method is prone to make errors in your targeting. But if you want you can read a clear description of how to use it in the GWX 3 manual. It will apply to unmodded SH3 too for the most part.
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Thanks for the correction Pisces. I knew that, but didn't phrase things very well.
Not even close actually !