Using sonar only - barely hitting it

Siberian · 02-28-11, 06:04 PM

I've set up a mission myself just practicing hitting a tanker using sonar only. I manage to hit it, but it's always really close to the bow and sometimes I just miss it. In order to hit it dead center I have to feed the TDC with a lower target speed than what's actually the case. I'm not working the sonar myself - just having it follow the tanker and sending the values to the TDC.

Any thoughts on why I'm not hitting it more midship?

Platapus · 02-28-11, 08:05 PM

That is weird, I would have thought using sonar only would cause you to hit near the rear if anything.

Doenitz2008 · 02-28-11, 08:47 PM

I've noticed the same, as far as hitting bow shots. Not sure why. I am tending more or less to fire the first fish at the zero, then go by wire and try for different points on the ship. I am certainly no expert, and indeed I am wondering why it seems to be a pattern.

magic452 · 03-01-11, 03:05 AM

Sounds like you might be getting the range wrong?????? It's too long.
The TDC is putting a little too much gyro angle in the solution.

Magic

commandosolo2009 · 03-01-11, 06:37 AM

your hydrophone bearing is the propeller bearing. try doing a salvo ahead at different angles and see which one suits you the best. a more reliable way is to track the target to bearing 340 or 20 (according to course), then up scope for a final speed check and firing bearing (using the fixed line method), then down scope, fire one, fire two, and wait for the firecrackers...

02-28-11, 06:04 PM	#1
Siberian Swabbie Join Date: Feb 2011 Posts: 6 Downloads: 15 Uploads: 0	Using sonar only - barely hitting it I've set up a mission myself just practicing hitting a tanker using sonar only. I manage to hit it, but it's always really close to the bow and sometimes I just miss it. In order to hit it dead center I have to feed the TDC with a lower target speed than what's actually the case. I'm not working the sonar myself - just having it follow the tanker and sending the values to the TDC. Any thoughts on why I'm not hitting it more midship?

02-28-11, 08:05 PM	#2
Platapus Fleet Admiral Join Date: Oct 2006 Posts: 19,366 Downloads: 63 Uploads: 0	That is weird, I would have thought using sonar only would cause you to hit near the rear if anything. __________________ abusus non tollit usum - A right should NOT be withheld from people on the basis that some tend to abuse that right.

02-28-11, 08:47 PM	#3
Doenitz2008 Watch Join Date: Jan 2011 Posts: 29 Downloads: 29 Uploads: 0	Similar I've noticed the same, as far as hitting bow shots. Not sure why. I am tending more or less to fire the first fish at the zero, then go by wire and try for different points on the ship. I am certainly no expert, and indeed I am wondering why it seems to be a pattern.

03-01-11, 03:05 AM	#4
magic452 Sea Lord Join Date: Sep 2007 Location: Reno Nevada USA Posts: 1,860 Downloads: 85 Uploads: 0	Sounds like you might be getting the range wrong?????? It's too long. The TDC is putting a little too much gyro angle in the solution. Magic __________________ Reported lost 11 Feb. 1942 Signature by depthtok33l

03-01-11, 06:37 AM	#5
commandosolo2009 Grey Wolf Join Date: Sep 2009 Location: Egypt Posts: 840 Downloads: 132 Uploads: 0	your hydrophone bearing is the propeller bearing. try doing a salvo ahead at different angles and see which one suits you the best. a more reliable way is to track the target to bearing 340 or 20 (according to course), then up scope for a final speed check and firing bearing (using the fixed line method), then down scope, fire one, fire two, and wait for the firecrackers... __________________ x.com/lexatnews