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-   -   [req] Looking for authoritive info on surface endurance (https://www.subsim.com/radioroom/showthread.php?t=114746)

Ducimus 05-16-07 09:03 PM

No, its just based on 12,000 nm @ 10 kts. Or rather, if 96,000 gallons of fuel gets you 12,000 nm when traveling at 10 kts, then you'd use 8,000 gallons per 1,000 nm. When editing the sub's sim file, it wants a NM range @ speed.


Anyway,The numbers look good. i think ill be using the above values (perhaps recalculated sans rounding to be more exact) in Tmaru 1.1.

U-Bones 05-16-07 10:35 PM

Quote:

Originally Posted by Ducimus
No, its just based on 12,000 nm @ 10 kts. Or rather, if 96,000 gallons of fuel gets you 12,000 nm when traveling at 10 kts, then you'd use 8,000 gallons per 1,000 nm. When editing the sub's sim file, it wants a NM range @ speed.


Anyway,The numbers look good. i think ill be using the above values (perhaps recalculated sans rounding to be more exact) in Tmaru 1.1.

It assumes the same efficiency for all the power plants, but like you say anything you pick will be somewhat arbitrary and these are all in the ballpark. IMO 11-12k is much preferable to the current 16k across the board. The partol I just finished would have been *tight* on fuel.

CaptainHaplo 05-17-07 06:24 PM

Guys, I hate to throw a wrinkle in here - but you have to remember that you HAVE to deal with averages. Running distance during wartime was always on surface AND sub-surface (except when transitting friendly waters). Then you have to account for when a sub may have to charge batteries vs use propulsion for motion only. And lets not even start taking into account weather and sea state..

When you look at it - your going to have to accept an average. Even were you to just take a sub, fill it up and run it at 10 knots in a straight line - your still not going to get the same results every time. *Although man wouldnt that be fun to get a group together and try - at least for a few hours!*

In reality - the sea state is going to have a huge effect on "mileage", so you have to average.

Ducimus 05-17-07 07:08 PM

The reality of physics isn't always represented unfortuantley.

Jmack 05-17-07 07:57 PM

thats why i asked if there was a minimal value ... but anyway i think these values are better than stock , but then again ranges of 20 000 where possible ...

SgtWalt65 05-17-07 11:21 PM

Quote:

Originally Posted by Ducimus
@tedhealy good point on individual modificaitons. I think one might have to settle for an average or best case scenario.

@Jmack
Good work. Thats a little bit more along the lines of what im looking for, although i woudlnt doubt they're be some variences. Now the trouble is how to convert that to a number usable by the game. (IE MaxRange @ speed format)

:hmm:


edit: Wow, did the sargo really have more fuel then a gato? (generally speaking)

What I woul do would be to try and find out best and worse and set it for say 65-70% between the two leaning towards the better side. Really depends on the Boats Captain and how he sailed her.

U-Bones 05-17-07 11:58 PM

Observation:

I played a Tambor for 2 Patrols in TM 1.0 and was luckily in port for 1.1.

Assignments: Patrol 3 was Formosa Commando Insertion, Deploy Formosa Sea, Prosecute Shipping. Nice.

Mileage: at start my CE calculated 11200 at 10kt. I ordered 45% throtttle (my std), and that figure shoots up to 13600 at ~9.4kt

I do not believe the range@speed settings used in *.sim are the most efficient settings in game as is commonly thought. They CAN be, but when they are it is co-incidental. I believe that efficiency is directly related to throttle %, such as is used in the *.cfg file. I could be wrong but...

At any rate the max range is actually almost 20% higher, IF you have a good CE ;)
Dunno what you want to do with the info, but there it is for you to consider.

BTW, nice job on 1.1- I am playing with only my keyboard and camera on top. (and sub throttle speeds in the cfg lol - i use them as creep, stationkeeping,maxrange,full & flank .125,.33,.45,.9,1.0). Once you get use to this everything else is a lot of unneccessary dial clicking. Old habits and crutches - with them everything just felt right.

Again, nice job.

perisher 05-18-07 11:47 AM

Extract from USS Wahoo 5th War Patrol Report :-

15. FUEL OIL EXPENDED
Enroute to Area......................... 8.68 gal. per mile.
In Area................................. 8.53 gal. per mile.
From Area...............................15.80 gal. per mile.


NOTE: Passage to area appears to have been mostly at "2 engine speed"
Passage home appears to have been at "3 engine speed."


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