Diving deep to avoid DDs

mikesn9 · 08-08-18, 03:34 PM

spring of '42, Tambor class thermal at 190ft. (TMOwtw, no other mods)

I was trying to escape from a couple of very aggressive DDs. I had tried various methods of sneaking away, to no avail.
They'd find me, start pinging and run directly over me and drop charges. This went on a long time, I tried diving deeper.. made it down to 535ft ok, but they still found me ?????
I did notice the background noise in the boat (good job guys) but it seemed to be loud and staying on. And the DD's also stayed after me at 535 ft.

When diving deep do the surface ships hear the creaking? That would take trying to escape deep out of the mix. I came back up to about 350 and crept SLOWLY away .

Any thoughts here?

Aoogahman · 08-08-18, 04:58 PM

I'll let you know. I'm about to attack a large convoy (I think I'm about 4,000 yds out) and there's lots of escorts. Did I say I'm new at this and this is my 2nd mission with SH4?

If needed, and I don't get rammed, I'm planning to go deep, rig for silent running, make turns for 1 knot, and show as little profile as possible.

Hope somebody can give you a better answer.

propbeanie · 08-08-18, 07:04 PM

TMOwTw, if I'm not mistaken, put the thermal layer back to almost stock (aanker??), so it should help. If it's found at 190, you would go to about 235 then, to have the whole boat below it. Put the throttle telemetry on 1 knot, or use the rpm gauge somewhere below 90, if it's functional in TMOwTw (50-90rpm), and "Silent Running". Already have an "escape" route picked out, and go that way, stay that way, slight turns every once in a while. Warning though: if it's daylight, and a calm sea, you'll need an additional step: Bend over and kiss the moon goodbye...

ETR3(SS) · 08-09-18, 01:37 AM

Generated noise is linked to one thing and one thing only: shaft rpm. Like it was mentioned set your speed manually and creep away slowly at 1-2kts.

mikesn9 · 08-09-18, 05:37 AM

I had done exactly what everyone suggested. And I usually try to sneak off at 1 knot. What surprised me was that they kept pinging, seemingly accurately.

By the way.. where is that RPM gauge? I've spent much time scanning all around the interior. Obviously I found the deepest depth gauge.

propbeanie · 08-09-18, 06:48 AM

Stock and some mods don't have them easily available, if at all. In TMO-based mods, if you're in a fleet boat and in the Control Room, they are on the un-occupied stand to the Chief's right. In the Conn, they are to the Helmsman's right on his station. In both cases, it's a grouping of 4 small gauges, 2x2, maybe just above waist height... Some mods, you can click on them and set the rpm. Others, they're window dressing, and you'll have to fiddle with the knot gauge to get the rpm down...

It is difficult to not panic or worry when you hear continuous pinging, but patience is key, as is realizing you will take damage. The main ingredient is proper attacking, which is just biding your time, and attack where / when appropriate - if possible...

08-08-18, 03:34 PM	#1
mikesn9 Sonar Guy Join Date: Feb 2013 Location: Sarasota Florida Posts: 391 Downloads: 68 Uploads: 0	Diving deep to avoid DDs spring of '42, Tambor class thermal at 190ft. (TMOwtw, no other mods) I was trying to escape from a couple of very aggressive DDs. I had tried various methods of sneaking away, to no avail. They'd find me, start pinging and run directly over me and drop charges. This went on a long time, I tried diving deeper.. made it down to 535ft ok, but they still found me ????? I did notice the background noise in the boat (good job guys) but it seemed to be loud and staying on. And the DD's also stayed after me at 535 ft. When diving deep do the surface ships hear the creaking? That would take trying to escape deep out of the mix. I came back up to about 350 and crept SLOWLY away . Any thoughts here?

08-08-18, 04:58 PM	#2
Aoogahman Seaman Join Date: Jul 2018 Location: Florida Posts: 31 Downloads: 1 Uploads: 0	I'll let you know. I'm about to attack a large convoy (I think I'm about 4,000 yds out) and there's lots of escorts. Did I say I'm new at this and this is my 2nd mission with SH4? If needed, and I don't get rammed, I'm planning to go deep, rig for silent running, make turns for 1 knot, and show as little profile as possible. Hope somebody can give you a better answer. __________________ Now where did I put that clock key?

08-08-18, 07:04 PM	#3
propbeanie CTD - it's not just a job Join Date: May 2016 Location: One hour from Music City USA! Posts: 9,788 Downloads: 444 Uploads: 2	TMOwTw, if I'm not mistaken, put the thermal layer back to almost stock (aanker??), so it should help. If it's found at 190, you would go to about 235 then, to have the whole boat below it. Put the throttle telemetry on 1 knot, or use the rpm gauge somewhere below 90, if it's functional in TMOwTw (50-90rpm), and "Silent Running". Already have an "escape" route picked out, and go that way, stay that way, slight turns every once in a while. Warning though: if it's daylight, and a calm sea, you'll need an additional step: Bend over and kiss the moon goodbye... __________________ "...and bollocks to the naysayer/s" - Jimbuna

08-09-18, 01:37 AM	#4
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	Generated noise is linked to one thing and one thing only: shaft rpm. Like it was mentioned set your speed manually and creep away slowly at 1-2kts. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

08-09-18, 06:48 AM	#6
propbeanie CTD - it's not just a job Join Date: May 2016 Location: One hour from Music City USA! Posts: 9,788 Downloads: 444 Uploads: 2	Stock and some mods don't have them easily available, if at all. In TMO-based mods, if you're in a fleet boat and in the Control Room, they are on the un-occupied stand to the Chief's right. In the Conn, they are to the Helmsman's right on his station. In both cases, it's a grouping of 4 small gauges, 2x2, maybe just above waist height... Some mods, you can click on them and set the rpm. Others, they're window dressing, and you'll have to fiddle with the knot gauge to get the rpm down... It is difficult to not panic or worry when you hear continuous pinging, but patience is key, as is realizing you will take damage. The main ingredient is proper attacking, which is just biding your time, and attack where / when appropriate - if possible... __________________ "...and bollocks to the naysayer/s" - Jimbuna

08-09-18, 05:37 AM	#5
mikesn9 Sonar Guy Join Date: Feb 2013 Location: Sarasota Florida Posts: 391 Downloads: 68 Uploads: 0	I had done exactly what everyone suggested. And I usually try to sneak off at 1 knot. What surprised me was that they kept pinging, seemingly accurately. By the way.. where is that RPM gauge? I've spent much time scanning all around the interior. Obviously I found the deepest depth gauge.