Underwater range and endurance

ETR3(SS) · 02-22-14, 07:07 PM

The problem with the recharge times and endurance has to do with the speed you travel at. I don't recall the exact speed offhand but traveling at less than that speed will drain the batteries faster than if you were traveling faster than speed X. Adjusting the range at speed endurance typically results is longer recharge times. In short, you're chasing a ghost. The problem is in a part of the game that we don't have access to.

Sniper297 · 02-22-14, 11:51 PM

"...what does it do with 2 miles and 96 knots?"

Something similar to 0.5 miles and 90 knots, about 62-63 miles and about 20-30 hours recharge time.

ETR3, I did try the speed control dial, set 1 knot, 2 knots, 4 knots, all result in less range than the default 3 knots I get with ahead 1/3rd on the standard engine telegraph control.

Curious, I was an AX which is also an electronics rate, but the BEEP school at NAS Memphis was overcrowded so the sent a bunch of us to BEEP at SSC/NTC San Diego. Did you go to BEEP there, and where was your A school?

ETR3(SS) · 02-23-14, 07:19 AM

Not sure what BEEP is offhand, but I was a striker and struck radio after trying for STS which was a waste of time. I didn't go to A school but it would've been back in Groton, CT with the rest of the A schools except for MT and nuc. C school would've been in Bangor, WA for the Trident Radio Room setup. Think the pipeline was about a year/ year and a half.

Sniper297 · 02-23-14, 12:02 PM

BEEP = Basic Electricity and Electronics Preparation. When I was active there were two, one at NTC San Diego for all the blackshoes and the other at NAS Memphis for airdales. Most of those bases are closed these days, and of course this;

Was retired long ago, replaced by the SH-60.

ETR3(SS) · 02-23-14, 01:14 PM

Ah ok. We had SECF which was a common intro for all the "T" rates and then you would branch off from there to your specific rate. SH-3 right? For all the training we did for ASW assets helos never figured prominently into it. P-3's on the other hand was drilled into us.

Sniper297 · 02-24-14, 08:57 PM

Yep, the Orion crews used to call our Sea Kings "Winnebagos", but I didn't take offense since they were right - I got a few rides in P-3s and it's like comparing a Volkswagen Beetle to a Rolls Royce limo. Smooth ride, no vibration, lots of room inside. The standard joke was that a helicopter was 1000 mismatched parts flying in close formation around an oil leak while waiting for metal fatigue to set in.
But then again, a P-3 can't hover or land on a ship.

Forgot some other tests, working on those when I'm not tearing my hair out trying to figure out the texture mapping on these blasted subs. All Stop, Ahead 1/3rd, Ahead 2/3rds, Ahead Standard all have the same recharge rate, about 6 hours. Ahead Full takes 11 hours, Ahead Flank 22 hours. Discharge is keyed to speed rather than power, running at Ahead Flank, diving, then going to All Stop the battery continues to drain while the sub is coasting. 9 knots submerged you get 10 miles in a little over an hour before the battery drops to 10%, and the speed is down to 4 knots.

Sniper297 · 10-28-14, 06:03 PM

Well, after modding a Sargo to run at a max of 12 knots submerged I found that flank speed wasn't draining the battery nearly as fast as I thought it should, and running all ahead standard actually drained the battery faster than flank and decreased the range. Fiddled with the numbers again;

miles = 2
knots = 25

Then ran some tests;

5 1/2 hour recharge from 10%

2 knots (1/3rd)
70 miles

5 knots (2/3rd)
37 miles

8 knots (Standard)
16 miles

10 knots (Full)
51 miles

12 knots (Flank)
47 miles

The first three make perfect sense, increase from 2 to 5 knots cuts the range almost in half, increase to 8 knots less than a quarter, but then 10 knots INCREASES the range, and flank is better than 2/3rds. There must be other files and/or data factored in here, horsepower and/or drag possibly.

02-22-14, 07:07 PM	#1
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	The problem with the recharge times and endurance has to do with the speed you travel at. I don't recall the exact speed offhand but traveling at less than that speed will drain the batteries faster than if you were traveling faster than speed X. Adjusting the range at speed endurance typically results is longer recharge times. In short, you're chasing a ghost. The problem is in a part of the game that we don't have access to. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

02-23-14, 07:19 AM	#3
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	Not sure what BEEP is offhand, but I was a striker and struck radio after trying for STS which was a waste of time. I didn't go to A school but it would've been back in Groton, CT with the rest of the A schools except for MT and nuc. C school would've been in Bangor, WA for the Trident Radio Room setup. Think the pipeline was about a year/ year and a half. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

02-23-14, 01:14 PM	#5
ETR3(SS) Ocean Warrior Join Date: Dec 2007 Location: Between test depth and periscope depth Posts: 3,021 Downloads: 175 Uploads: 16	Ah ok. We had SECF which was a common intro for all the "T" rates and then you would branch off from there to your specific rate. SH-3 right? For all the training we did for ASW assets helos never figured prominently into it. P-3's on the other hand was drilled into us. __________________ USS Kentucky SSBN 737 (G) Comms Div 2003-2006 Qualified 19 November 03 Yes I was really on a submarine.

02-22-14, 11:51 PM	#2
Sniper297 The Old Man Join Date: Dec 2005 Location: Philadelphia Shipyard Brig Posts: 1,386 Downloads: 160 Uploads: 19	"...what does it do with 2 miles and 96 knots?" Something similar to 0.5 miles and 90 knots, about 62-63 miles and about 20-30 hours recharge time. ETR3, I did try the speed control dial, set 1 knot, 2 knots, 4 knots, all result in less range than the default 3 knots I get with ahead 1/3rd on the standard engine telegraph control. Curious, I was an AX which is also an electronics rate, but the BEEP school at NAS Memphis was overcrowded so the sent a bunch of us to BEEP at SSC/NTC San Diego. Did you go to BEEP there, and where was your A school?

02-23-14, 12:02 PM	#4
Sniper297 The Old Man Join Date: Dec 2005 Location: Philadelphia Shipyard Brig Posts: 1,386 Downloads: 160 Uploads: 19	BEEP = Basic Electricity and Electronics Preparation. When I was active there were two, one at NTC San Diego for all the blackshoes and the other at NAS Memphis for airdales. Most of those bases are closed these days, and of course this; Was retired long ago, replaced by the SH-60.

02-24-14, 08:57 PM	#6
Sniper297 The Old Man Join Date: Dec 2005 Location: Philadelphia Shipyard Brig Posts: 1,386 Downloads: 160 Uploads: 19	Yep, the Orion crews used to call our Sea Kings "Winnebagos", but I didn't take offense since they were right - I got a few rides in P-3s and it's like comparing a Volkswagen Beetle to a Rolls Royce limo. Smooth ride, no vibration, lots of room inside. The standard joke was that a helicopter was 1000 mismatched parts flying in close formation around an oil leak while waiting for metal fatigue to set in. But then again, a P-3 can't hover or land on a ship. Forgot some other tests, working on those when I'm not tearing my hair out trying to figure out the texture mapping on these blasted subs. All Stop, Ahead 1/3rd, Ahead 2/3rds, Ahead Standard all have the same recharge rate, about 6 hours. Ahead Full takes 11 hours, Ahead Flank 22 hours. Discharge is keyed to speed rather than power, running at Ahead Flank, diving, then going to All Stop the battery continues to drain while the sub is coasting. 9 knots submerged you get 10 miles in a little over an hour before the battery drops to 10%, and the speed is down to 4 knots.

10-28-14, 06:03 PM	#7
Sniper297 The Old Man Join Date: Dec 2005 Location: Philadelphia Shipyard Brig Posts: 1,386 Downloads: 160 Uploads: 19	Well, after modding a Sargo to run at a max of 12 knots submerged I found that flank speed wasn't draining the battery nearly as fast as I thought it should, and running all ahead standard actually drained the battery faster than flank and decreased the range. Fiddled with the numbers again; miles = 2 knots = 25 Then ran some tests; 5 1/2 hour recharge from 10% 2 knots (1/3rd) 70 miles 5 knots (2/3rd) 37 miles 8 knots (Standard) 16 miles 10 knots (Full) 51 miles 12 knots (Flank) 47 miles The first three make perfect sense, increase from 2 to 5 knots cuts the range almost in half, increase to 8 knots less than a quarter, but then 10 knots INCREASES the range, and flank is better than 2/3rds. There must be other files and/or data factored in here, horsepower and/or drag possibly.