little bit of trouble locating convoy

[Midnyte]

i've been using the hydrophone to try and locate contacts.... i do everything as required step for step...

> dive
>take 1st bearing
>set timer and wait 10 mins
> take second bearing
> set timer and wait 10 mins
> take 3rd bearing
>draw a line from 1st to 3rd bearing with the angle settling on the 2nd bearing line
> estimate 4th bearing based on previous bearings
> move boat...10 mins and dive
> take new bearing and then plot target course
> move if need be to line up for attack
> noone around for miles


so im pretty sure im missing something here... i can still hear them on the hydro but can never see them... sometimes no matter what speed im going they seem to be still ahead of me somehow depsite going at 16.3 knots.

am i missing something or doing something wrong?

[Lexor76]

I guess I've seen the same youtube video but never tried it, I'm not the right guy to stay at least 20 minutes stationary before doing anything - in this time they move away from you (4-7 km) which you have to catch up later...

If you want to stick with this procedure I can't help you, if you want to try something else:

• dive and take bearing (if not in sight already)
  
• surface and go full steam ahead towards convoy for 5000m
  
• repeat first two steps

usually I have visual contact after 2 repititions.
From there on ID all vessels, calculate course and speed, get ahead of them and setup ambush.

edit:
Also why are you just doing 16.3kn? Blow all tanks, you should make ~17.7kn

[The_Mask]

Are u on diesel engines or still on electric ?

[Midnyte]

ive been taking bearings while moving to i watched some video on how to do it earlier... but stationary...mobile ... seems i cant locate em ...i might try it the short version way you listed there but i enjoy the immersion but ill try that method to none the less

[Hentai_Fapper_Supreme]

I cannot seem to find anything either and i follow the same steps. its quite frustrating.

[Valen]

>draw a line from 1st to 3rd bearing with the angle settling on the 2nd bearing line

The way the manual explains it is not very precise. The center of the line is not wel marked by the number of the angle, causing you to draw the line in a wrong direction. Consider an alternate way of drawing the target course line:

1: Take the 3 bearings with equal time periods apart. Note the true bearing on the white ring of the hydrophone. If the bearing seems to come from between to degrees marks, use that! Don't rush to be taking it on the second the interval expires, take the time (within reason) to record the angle as precise as you can get.

2: Draw them on the map with the line tool and show angle option. Make them of sufficient length. And again, try to draw them in the as accurate direction as you can.

3: Calculate the opposite direction of bearing 1 and 3. So +180 or -180, whichever one get's it between 0 and 360.

4: From the end of bearing 2 draw 2 lines in the directions (exact) opposite to bearings 1 and 3. That is why you calculated them in step 3. Did I already say you need to be as accurate as can be?

5: Now you should have a parallelogram formed, of which bearing 2 is a diagonal. The other diagonal is the target course (at the wrong distance). This is formed by the intersections of: bearing 3 intersected by the reverse of bearing 1 (from the end of bearing 2), and bearing 1 intersected by the reverse of bearing 3 (from the end of bearing 2)

From that you can extrapolate the distance moved for the 4th bearing and draw that in while the boat is already moving. Usually moving parallel to the target course is enough to get a good crossing with the 4th bearing.

[Valen]

@TheGodfatherx96

>I cannot seem to find anything either and i follow the same steps. its quite frustrating.

From which hydrophone ring did you take the bearings? You need to read the angle of the white ring with the N on it.

[ZaRaK]

https://i.imgur.com/LqcDyzM.png

gamestart -> dive..
depth lower than 12m should do it..

hydrophone > ((black radial = relative to your boat // white radial = compass (use white!!))

listen, start clock, mark direction on map... (1.)
wait 5min...
listen, mark new direction on map... (2.)
wait 5min..
listen, mark new direction on map... (.3)
now you know their course...
painted range between 1. direction and 2. direction needs to be same as between 3. and 2.

>> easier than in manual > mark a spot on 2. listening... draw a line parallel to 1. listening and another parallel to 3. listening...
now draw a line where those two lines cross 1. and 3. bearing to know their course....

now you know where they should be on 4. listen... (distance from 3. to 4. is the same as from 1. to 2., or from 2. to 3.) ...draw a line from 3. like the enemy's course and same distance as said before... there should they be at the next listening..

move forward as fast as possible.. but stop before another 5min are over... mark your position...
listen again... now the new direction should cross the line where they should be... thats the actual position... you know course and distance now....

https://i.imgur.com/LqcDyzM.png (same as above)