SH4 Hydrophone firing solution with US Boats?

Yamato_NF · 12-01-13, 11:47 PM

Thanks, ive seen the Dick O'Kane method (after a lengthy search on google...)
and that seems like an excellent option, mainly because range doesnt matter! Any idea how i would go about attacking a convoy with sonar?

I ask because i have tried the O'Kane method on lone ships; i even got a hit on a Destroyer at 8.5nm! but i have yet to find a convoy...

Moonlight · 12-02-13, 06:49 AM

Have a look at HalfjackHJ's video tutorial about sonar only attacks if you haven't seen them.
Manual Torpedo Targeting with Sonar (SH4)

Manual Torpedo Targeting with Sonar (SH4), part 2

Yamato_NF · 12-02-13, 05:19 PM

Quote:

Originally Posted by Moonlight

Have a look at HalfjackHJ's video tutorial about sonar only attacks if you haven't seen them.
Manual Torpedo Targeting with Sonar (SH4)

Manual Torpedo Targeting with Sonar (SH4), part 2

I Tried these, but they do not show how to attack convoys with only sonar...

Bothersome · 12-03-13, 01:55 PM

I think what you're asking for may be too much. But after giving it some thought. This is how I would go about doing a convoy...

First let's assume a small convoy of 4 merchants or target vessels in a 2 x 2 arrangement. And lets also say there are 6 escorts in a hex guard pattern.

Let's say the convoy is traversing from right to left. I'd be set up on a 90 degree O'Kane attack shot. I would have all my torps aligned to fire straight ahead. Preferably using electric torpedoes as I do NOT want any bubbles to point my location. This means I need to be at about 3000 yards from the path of the furthest merchant or target ship as it crosses in front of me.

Using a pre-timed method of getting their speed and heading I find the bearing that my periscope needs to be aimed at to make the torpedoes fire straight ahead. Say about 19 degrees bearing for an 11 knots target speed. I'd set my depth of torpedoes to about 10 feet. And since I'm using electrics, if they happen to run under an escort, they should be none the wiser.

Once the firing solution is set up, I would then go to sonar and set my sonar bearing to 19 degrees. As I heard my targets cross the 19 degree bearing, I'd let loose the fish. Only the first two targets would have any likely chance of a hit in this scenario though because as soon as the first ship is hit, they will know they are under attack and the latter ships will start to slow and serpentine probably causing a miss.

One alternative is to use gas powered torpedoes for the last two ships set on high, but you'd have to recalc the bearing for their crossing and move your hydrophone on that new bearing for the last shots on the last two ships. But then you'll give up your location if you do that.

Firing on convoys using hydrophone only is probably reaching a bit giving the technology we have at our disposal.

Someone else may have a better solution.

12-01-13, 11:47 PM	#1
Yamato_NF King of the Ocean Join Date: Mar 2010 Location: Michigan, United States Posts: 337 Downloads: 621 Uploads: 0	thanks! One more question: Thanks, ive seen the Dick O'Kane method (after a lengthy search on google...) and that seems like an excellent option, mainly because range doesnt matter! Any idea how i would go about attacking a convoy with sonar? I ask because i have tried the O'Kane method on lone ships; i even got a hit on a Destroyer at 8.5nm! but i have yet to find a convoy... __________________ Proud owner of SH3/4/5 Proud owner of the DCS series "He who controls the seas controls the world." Last edited by Yamato_NF; 12-01-13 at 11:48 PM. Reason: Typo

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12-02-13, 06:49 AM	#2
Moonlight Ocean Warrior Join Date: Dec 2010 Location: Fookhall Copse Posts: 2,522 Downloads: 184 Uploads: 0	Have a look at HalfjackHJ's video tutorial about sonar only attacks if you haven't seen them. Manual Torpedo Targeting with Sonar (SH4) Manual Torpedo Targeting with Sonar (SH4), part 2

12-03-13, 01:55 PM	#4
Bothersome Planesman Join Date: Mar 2010 Posts: 194 Downloads: 64 Uploads: 0	I think what you're asking for may be too much. But after giving it some thought. This is how I would go about doing a convoy... First let's assume a small convoy of 4 merchants or target vessels in a 2 x 2 arrangement. And lets also say there are 6 escorts in a hex guard pattern. Let's say the convoy is traversing from right to left. I'd be set up on a 90 degree O'Kane attack shot. I would have all my torps aligned to fire straight ahead. Preferably using electric torpedoes as I do NOT want any bubbles to point my location. This means I need to be at about 3000 yards from the path of the furthest merchant or target ship as it crosses in front of me. Using a pre-timed method of getting their speed and heading I find the bearing that my periscope needs to be aimed at to make the torpedoes fire straight ahead. Say about 19 degrees bearing for an 11 knots target speed. I'd set my depth of torpedoes to about 10 feet. And since I'm using electrics, if they happen to run under an escort, they should be none the wiser. Once the firing solution is set up, I would then go to sonar and set my sonar bearing to 19 degrees. As I heard my targets cross the 19 degree bearing, I'd let loose the fish. Only the first two targets would have any likely chance of a hit in this scenario though because as soon as the first ship is hit, they will know they are under attack and the latter ships will start to slow and serpentine probably causing a miss. One alternative is to use gas powered torpedoes for the last two ships set on high, but you'd have to recalc the bearing for their crossing and move your hydrophone on that new bearing for the last shots on the last two ships. But then you'll give up your location if you do that. Firing on convoys using hydrophone only is probably reaching a bit giving the technology we have at our disposal. Someone else may have a better solution.