Sub fuel ranges

Flaxpants · 07-16-10, 02:04 AM

Just wondering how some of you more experienced players manage your fuel loads. As far as I am aware I can only get two indications of my fuel/range- The fuel gauge, and the navigator report on maximum range at current speed. The navigators report seems to vary wildly- last night whilst on patrol (and travelling at a constant engine speed), the reports seemed to go from 5000k up to at one point 11,000k, but I appreciate that variables like the wind, surface conditions etc probably have a great effect on this value.
Is there any method you use which enables you to calculate your remaining fuel and range more exactly?

Gerald · 07-16-10, 02:30 AM

Quote:

Originally Posted by Flaxpants

Just wondering how some of you more experienced players manage your fuel loads. As far as I am aware I can only get two indications of my fuel/range- The fuel gauge, and the navigator report on maximum range at current speed. The navigators report seems to vary wildly- last night whilst on patrol (and travelling at a constant engine speed), the reports seemed to go from 5000k up to at one point 11,000k, but I appreciate that variables like the wind, surface conditions etc probably have a great effect on this value.
Is there any method you use which enables you to calculate your remaining fuel and range more exactly?

What sub,are you use?

Flaxpants · 07-16-10, 02:35 AM

Using the type VIIC, 1941.

sergei · 07-16-10, 04:03 AM

Make sure you are not recharging batteries when you ask for range. That really FUBARS the result, because you're running with one engine at flank for the recharge.

I've seen my estimate vary by up to 2000km in a storm, never as much as 6000km

After a few patrols you just get a good feel for the sort of ranges you can achieve.

GoDeep · 07-16-10, 04:34 AM

If you have GWX 3 installed, you should also have the manual that came with it. There is a table there that lists the U-boat ranges from "vanilla" SH3 and SH3 with GWX. It's on page 72 of the manual.

According to the table, the type VII's had a range of 12.000 miles in stock SH3, but 15.000 miles in GWX. (For why that is, see the manual, they explain it very well). The various type IX's had varying ranges, ranging from 16.000 miles for the IXB, to a staggering 44.000 miles for the IXD2!
(20.000 and 55.000 respectively in GWX)

The slower you go, the further you can travel (less rpms for the diesels). The type VII traditionally cruised at about 7 knots, which seemed to be the most fuel efficient speed. The faster you go, the more fuel you burn, of course.

Pisces · 07-16-10, 11:41 AM

Quote:

Originally Posted by GoDeep

...
The slower you go, the further you can travel (less rpms for the diesels). The type VII traditionally cruised at about 7 knots, which seemed to be the most fuel efficient speed. The faster you go, the more fuel you burn, of course.

Not completely accurate. There is a maximum efficiancy at a certain speed. If you go faster then you burn more fuel, but if you go slower then you also burn more fuel per kilometre.

To the thread starter: Just set your uboat to different knot settings, let the needle settle on it, then ask the navigator for range possible at current speed. As said, keep in mind the recharge setting and weather conditions. Wind direction and such doesn't really affect fuel efficiency, but you do go less far in heavy weather.

07-17-10, 04:32 PM

Quote:

Originally Posted by GoDeep

If you have GWX 3 installed, you should also have the manual that came with it. There is a table there that lists the U-boat ranges from "vanilla" SH3 and SH3 with GWX. It's on page 72 of the manual.

According to the table, the type VII's had a range of 12.000 miles in stock SH3, but 15.000 miles in GWX. (For why that is, see the manual, they explain it very well). The various type IX's had varying ranges, ranging from 16.000 miles for the IXB, to a staggering 44.000 miles for the IXD2!
(20.000 and 55.000 respectively in GWX)

The slower you go, the further you can travel (less rpms for the diesels). The type VII traditionally cruised at about 7 knots, which seemed to be the most fuel efficient speed. The faster you go, the more fuel you burn, of course.

Result:
GWX is more accurate for East/West trips.
Stock is more accurate for North/South trips.

07-16-10, 02:04 AM	#1
Flaxpants Ace of the Deep Join Date: Jun 2010 Location: Koh Samui, Thailand Posts: 1,196 Downloads: 168 Uploads: 0	Sub fuel ranges Just wondering how some of you more experienced players manage your fuel loads. As far as I am aware I can only get two indications of my fuel/range- The fuel gauge, and the navigator report on maximum range at current speed. The navigators report seems to vary wildly- last night whilst on patrol (and travelling at a constant engine speed), the reports seemed to go from 5000k up to at one point 11,000k, but I appreciate that variables like the wind, surface conditions etc probably have a great effect on this value. Is there any method you use which enables you to calculate your remaining fuel and range more exactly?

07-16-10, 02:35 AM	#3
Flaxpants Ace of the Deep Join Date: Jun 2010 Location: Koh Samui, Thailand Posts: 1,196 Downloads: 168 Uploads: 0	Using the type VIIC, 1941.

07-16-10, 04:03 AM	#4
sergei Sea Lord Join Date: May 2008 Location: London UK Posts: 1,788 Downloads: 405 Uploads: 29	Make sure you are not recharging batteries when you ask for range. That really FUBARS the result, because you're running with one engine at flank for the recharge. I've seen my estimate vary by up to 2000km in a storm, never as much as 6000km After a few patrols you just get a good feel for the sort of ranges you can achieve.

07-16-10, 04:34 AM	#5
GoDeep Planesman Join Date: Jan 2002 Location: Netherlands Posts: 188 Downloads: 10 Uploads: 0	If you have GWX 3 installed, you should also have the manual that came with it. There is a table there that lists the U-boat ranges from "vanilla" SH3 and SH3 with GWX. It's on page 72 of the manual. According to the table, the type VII's had a range of 12.000 miles in stock SH3, but 15.000 miles in GWX. (For why that is, see the manual, they explain it very well). The various type IX's had varying ranges, ranging from 16.000 miles for the IXB, to a staggering 44.000 miles for the IXD2! (20.000 and 55.000 respectively in GWX) The slower you go, the further you can travel (less rpms for the diesels). The type VII traditionally cruised at about 7 knots, which seemed to be the most fuel efficient speed. The faster you go, the more fuel you burn, of course.