Fuel efficient routes

07-19-07, 05:25 PM

Hi,

Does SH4 model the earth's curvature so you can do a sort of parabolic route to get to Japan from Hawaii?
I run at 9-12kts (which sould be the most efficient speed for a Gato) and by the time I get to Japan, I need to get back.
Last time I left with more than half the fuel but I found a couple of ships, so with the manouvering and all that I didn't have enough fuel left to get to Midway to refuel!

Thanks.

07-19-07, 07:53 PM

wow I hadn't really thought of that. If the Devs did factor the surface of a sphere into the fuel consumption calcs I owe them a new level of respect

Bando · 07-20-07, 04:17 AM

Run at 10 knots, not 11 or 12. The S class runs best at 7 knots.
The devs made the earth a flat place, so the shortest route from A to B is .................

07-20-07, 04:50 AM

I know this was WWII, but a flat earth?

I'll try a run at 10kts and see if I can get back home alive.

seaniam81 · 07-20-07, 08:55 AM

dont go strait from pearl to japan make a fuel stop at midway

SteamWake · 07-20-07, 09:32 AM

The SH4 is flat as a shorty stack.

No great circle routes needed here.

Horst Mikaelis · 07-20-07, 09:52 AM

Yes, from Pearl to Japan I alwasy top off at Midway. This was SOP for the Hawaii boats, and one of the values of holding onto Midway Island.

I try to kepe track of how much fuel I expend as a percentage to get from Midway to station. That way I know when I'll go Bingo and have to head back.

Horst

SteamWake · 07-20-07, 10:48 AM

Quote:

Originally Posted by Horst Mikaelis

Yes, from Pearl to Japan I alwasy top off at Midway. This was SOP for the Hawaii boats, and one of the values of holding onto Midway Island.

Horst

At great costs let us not forget.

edit; typo

07-20-07, 11:13 AM

I did refuel at Midway, but it the range was still too short.
I've just done another run at 10kts with the Trigger Maru mod and I got to Japan with a lot of fuel left. I suspect part of this is from the mod and part from the speed.

Thanks to all that answered.

ReallyDedPoet · 07-20-07, 12:15 PM

Welcome

cmn

RDP

tycho102 · 07-20-07, 12:56 PM

Quote:

Originally Posted by cmn

I did refuel at Midway, but it the range was still too short.
I've just done another run at 10kts with the Trigger Maru mod and I got to Japan with a lot of fuel left. I suspect part of this is from the mod and part from the speed.

Thanks to all that answered.

Which mod?

You should probably download the keyboard editor or something, and get the "range at current speed" key setup. In a Gato crusing at 2/3's, you should be getting almost 20,000km range.

07-21-07, 06:08 AM

The total range on diesel at 9kts seems to be just over double what it takes to go to to Japan and return to Midway.

It seems the trick is to go submerged as much as possible and resurface in the night to recharge the batteries. I used about 15% to go there, but with half a load of fuel, ou can't get back to midway surfaced, you need to dive during the day (or night, but during the day planes will attack).

Bando · 07-21-07, 06:28 AM

?????
In any of the fleet boats (except for the S class) running at 10 knots from midway to japan and back gives you fuel to spare when running at the surface all the time. If not, I suspect you have a fuel leak, otherwise, 10 knots should do the trick.

Bluesub 6 · 07-22-07, 03:14 AM

Have you damaged batterys ?
Than will be continuous charged and that need a lot of fuel.

07-22-07, 05:55 AM

I don't think I had any damage, but I'll try to do a completely safe run (like in school mode or something) to make sure.

07-19-07, 05:25 PM	#1
cmn Stowaway Posts: n/a Downloads: Uploads:	Fuel efficient routes Hi, Does SH4 model the earth's curvature so you can do a sort of parabolic route to get to Japan from Hawaii? I run at 9-12kts (which sould be the most efficient speed for a Gato) and by the time I get to Japan, I need to get back. Last time I left with more than half the fuel but I found a couple of ships, so with the manouvering and all that I didn't have enough fuel left to get to Midway to refuel! Thanks.

07-19-07, 07:53 PM	#2
simonb1612 Stowaway Posts: n/a Downloads: Uploads:	Interesting question wow I hadn't really thought of that. If the Devs did factor the surface of a sphere into the fuel consumption calcs I owe them a new level of respect

07-20-07, 04:17 AM	#3
Bando Commodore Join Date: May 2007 Location: Where you don't see me Posts: 607 Downloads: 23 Uploads: 0	Run at 10 knots, not 11 or 12. The S class runs best at 7 knots. The devs made the earth a flat place, so the shortest route from A to B is ................. __________________ Regards, Bando

07-20-07, 08:55 AM	#5
seaniam81 Commodore Join Date: Dec 2003 Location: Ontario, Canada Posts: 624 Downloads: 87 Uploads: 0	dont go strait from pearl to japan make a fuel stop at midway __________________ Ultima ratio regum. (The final argument of kings) - Inscription on french cannons, on order of Louis XIV

07-20-07, 12:15 PM	#10
ReallyDedPoet Canadian Wolf Join Date: Jul 2006 Location: Canada. The one and only, East Coast Posts: 10,890 Downloads: 946 Uploads: 5	Welcome cmn RDP __________________ Back in the Day

07-20-07, 04:50 AM	#4
cmn Stowaway Posts: n/a Downloads: Uploads:	I know this was WWII, but a flat earth? I'll try a run at 10kts and see if I can get back home alive.

07-20-07, 09:32 AM	#6
SteamWake Rear Admiral Join Date: Mar 2005 Posts: 13,224 Downloads: 5 Uploads: 0	The SH4 is flat as a shorty stack. No great circle routes needed here.

07-20-07, 09:52 AM	#7
Horst Mikaelis Seaman Join Date: Jun 2007 Posts: 41 Downloads: 0 Uploads: 0	Yes, from Pearl to Japan I alwasy top off at Midway. This was SOP for the Hawaii boats, and one of the values of holding onto Midway Island. I try to kepe track of how much fuel I expend as a percentage to get from Midway to station. That way I know when I'll go Bingo and have to head back. Horst

07-20-07, 11:13 AM	#9
cmn Stowaway Posts: n/a Downloads: Uploads:	I did refuel at Midway, but it the range was still too short. I've just done another run at 10kts with the Trigger Maru mod and I got to Japan with a lot of fuel left. I suspect part of this is from the mod and part from the speed. Thanks to all that answered.

07-21-07, 06:08 AM	#12
cmn Stowaway Posts: n/a Downloads: Uploads:	The total range on diesel at 9kts seems to be just over double what it takes to go to to Japan and return to Midway. It seems the trick is to go submerged as much as possible and resurface in the night to recharge the batteries. I used about 15% to go there, but with half a load of fuel, ou can't get back to midway surfaced, you need to dive during the day (or night, but during the day planes will attack).

07-21-07, 06:28 AM	#13
Bando Commodore Join Date: May 2007 Location: Where you don't see me Posts: 607 Downloads: 23 Uploads: 0	????? In any of the fleet boats (except for the S class) running at 10 knots from midway to japan and back gives you fuel to spare when running at the surface all the time. If not, I suspect you have a fuel leak, otherwise, 10 knots should do the trick. __________________ Regards, Bando

07-22-07, 03:14 AM	#14
Bluesub 6 Loader Join Date: Jul 2007 Location: Germany Posts: 90 Downloads: 0 Uploads: 0	Have you damaged batterys ? Than will be continuous charged and that need a lot of fuel.

07-22-07, 05:55 AM	#15
cmn Stowaway Posts: n/a Downloads: Uploads:	I don't think I had any damage, but I'll try to do a completely safe run (like in school mode or something) to make sure.