Manual targeting

sharkbit · 08-27-09, 08:38 AM

Sorry-I couldn't find that diagram that shows this idea graphically.

It basically showed 2 ships on parallel courses at different ranges at time of firing and your sub/torpedo perpindicular to their courses.
The computed lead angle was the same for both ships, even though the ships are at a different range(assuming their speeds are the same).

All this can be figured with some trig or make a cool wizwheel-Hitman makes a cool one.
http://www.subsim.com/radioroom/show...t=kriegsmarine

teg916 · 08-27-09, 01:01 PM

Ok, that makes More sense. I didn't understand how to get the lead angle. Thanks

derrinurban · 08-27-09, 04:20 PM

I do the same sort of thing, but just made a chart for the different torpedo speeds. Since torpedo speed and target speed are constants, the shooting angle works for any distance.

http://img31.imageshack.us/img31/798...romthehip1.jpg

DU

JMV · 08-27-09, 05:03 PM

Sharkbit : I think I found it .

You're probably refering to thin post :

http://www.subsim.com/radioroom//sho...d.php?t=138312

It's SH4, but it does'nt really matter. See graphics at # 8 and 15.

sharkbit · 08-28-09, 08:15 AM

Quote:

Originally Posted by JMV

Sharkbit : I think I found it .

You're probably refering to thin post :

http://www.subsim.com/radioroom//sho...d.php?t=138312

It's SH4, but it does'nt really matter. See graphics at # 8 and 15.

THAT'S IT!!!!

Post #15 was the one sticking in my head.

Thanks JMV!

Bosje · 08-28-09, 09:22 AM

and at close range (around 1 kilometer) when the ship runs more or less perpendicular across your stern or bow, this trick also applies:

set all torpedo data to 0 so that it fires exactly on you bearing. fast torpedo leads by target speed in degrees, slow torpedo leads by the target speed x2

a destroyer, for example, crossing your bow at 15 knots after its attack run, needs a fast running torpedo aimed 15 degrees in front of her

this is what I always use when I am inside a convoy and the poo hits the proverbial propellor

edit: ah there is a list of lead angles on that link above. never mind (although I find my numbers are close enough to kill stuff)

09-25-09, 03:10 AM

You can get away with that if your making a straight on bow or stern shot but, when making a 90 degree shot (Target at 090 R or 270 R) you have to get the correct range.

08-28-09, 09:22 AM	#6
Bosje Seasoned Skipper Join Date: Apr 2008 Posts: 732 Downloads: 89 Uploads: 0	and at close range (around 1 kilometer) when the ship runs more or less perpendicular across your stern or bow, this trick also applies: set all torpedo data to 0 so that it fires exactly on you bearing. fast torpedo leads by target speed in degrees, slow torpedo leads by the target speed x2 a destroyer, for example, crossing your bow at 15 knots after its attack run, needs a fast running torpedo aimed 15 degrees in front of her this is what I always use when I am inside a convoy and the poo hits the proverbial propellor edit: ah there is a list of lead angles on that link above. never mind (although I find my numbers are close enough to kill stuff) __________________ And when an 800-ton Uboat has you by the tits... you listen!

08-27-09, 08:38 AM	#1
sharkbit The Old Man Join Date: Apr 2008 Location: Denver, CO Posts: 1,529 Downloads: 334 Uploads: 0	Sorry-I couldn't find that diagram that shows this idea graphically. It basically showed 2 ships on parallel courses at different ranges at time of firing and your sub/torpedo perpindicular to their courses. The computed lead angle was the same for both ships, even though the ships are at a different range(assuming their speeds are the same). All this can be figured with some trig or make a cool wizwheel-Hitman makes a cool one. http://www.subsim.com/radioroom/show...t=kriegsmarine __________________ “Prejudice is blind. There will always be someone who says you aren’t welcome at the table. Stop apologizing for who you are and using all your energy trying to change their minds. Yes, you will lose friends, maybe even family. But you will gain your self-respect. You will know your worth. Once you have that, nothing can stop you.”

08-27-09, 01:01 PM	#2
teg916 Watch Join Date: Aug 2009 Location: California Posts: 27 Downloads: 0 Uploads: 0	Ok, that makes More sense. I didn't understand how to get the lead angle. Thanks

08-27-09, 04:20 PM	#3
derrinurban Mate Join Date: Aug 2009 Location: Calgary, Alberta, Canada Posts: 54 Downloads: 33 Uploads: 0	I do the same sort of thing, but just made a chart for the different torpedo speeds. Since torpedo speed and target speed are constants, the shooting angle works for any distance. http://img31.imageshack.us/img31/798...romthehip1.jpg DU

08-27-09, 05:03 PM	#4
JMV Sonar Guy Join Date: Jun 2008 Location: Galway-IRELAND Posts: 397 Downloads: 179 Uploads: 0	Sharkbit : I think I found it . You're probably refering to thin post : http://www.subsim.com/radioroom//sho...d.php?t=138312 It's SH4, but it does'nt really matter. See graphics at # 8 and 15.

09-25-09, 03:10 AM	#7
Snestorm Stowaway Posts: n/a Downloads: Uploads:	You can get away with that if your making a straight on bow or stern shot but, when making a 90 degree shot (Target at 090 R or 270 R) you have to get the correct range.