[WIP] s-class mod

im going to try and do an s-class mod so that they will get more realistic fuel ranges and battery life.

i know there are issues with the s-class but i figured i would look to see if i can get lucky and figure out something to make them better.

one of the things i wanted to look at first is to understand how the s-boats fuel ranges work and what i can do about them.

i know the best optimum fuel economy for the fleetboats is 9.5 kts but what about the s-boats?

s-boats are smaller, slower and dont travel as fast so i assume they must have a different optimum fuel economy speed so can anyone tell me what that might be?

[VonHesse]

Pretty sure I read somewhere on here that it was 10.9 knots. Could be wrong, but it does seem to work for me. BTW, doesn't one of the supermods include a "range at current speed" button? TMO? Maybe RFB? Can't remember, but I know I've seen one somewhere. You could use that to find out, maybe.

Gonna keep an eye on this one, I'd like to know for sure too.

[ETR3(SS)]

Post I made here http://www.subsim.com/radioroom/show...7&postcount=19 is for stock s-boats.

[VonHesse]

O.K. SUBSIM, in recognition of all the time and effort that WEBSTER and everyone else here has expended on behaf of noobs like myself, I have decided that it's high time that I find a way to give something back. I picked this particular challenge for several reasons: S-Boats rule, mods rule(who knew?), and SUBSIM rules them all. More specifically, though, because it fit into my own unique computer skill-set (modders read: skill-set=NULL). And so without further adoo:

My Method:
-disable all mods, verify stock with JSGME snapshot
-start new career, 1942, S-18, Brisbane(to run in friendly waters)
-enable limited fuel, start outside harbor
- mark start position w/max zoom, plot due East to South America and back, mark turn-around point
-save game
-return, use knotmeter to set speed as close to 1.5 knots as possible
-follow course,max TC, wait, wait, wait, wait, etc...
-consider out of gas when crew says so with 4% left
-measure from mark to mark(again, max zoom), add return trip when necessary
-record distance, load save game and repeat repeatedly, i.e 2.5 knots, 3.5 knots, 4.5 knots, etc, etc

My Madness(Findings):
1.5 knots = 4,439.7 nm
2.5 knots = 7,399.6 nm
3.5 knots = 10,919.4 nm
4.5 knots = 13,687.1 nm
5.5 knots = 16,863.0 nm
6.5 knots = 15,728.3 nm
7.5 knots = 11,723.6 nm
8.5 knots = 9,511.1 nm
9.5 knots = 7,950.4 nm
10.5 knots = 6,477.6 nm
11.5 knots = 5,651.0 nm
12.5 knots = 4,706.2 nm
13.5 knots = 4,277.0 nm
* for once, I'm thankful that that's as fast as she goes...

Note: I do hearby swear, on pain of banishment, that these statements and findings are true, honest, and accurate to the best of my ability. I've no interest in misleading this fine community.

Glad to finally be able to contribute, cheers,......"-snap-"(sound of one's arm breaking from patting oneself on the back whilst falling into a boredom induced coma)...

that looks great thanks, but it only shows half knots.

from the list 5.5 knots = 16,863.0 nm is the best fuel economy but i am left to wonder if 5 or 6 kts might be better or worse than 5.5 kts

can you check those two? (5.0 and 6.0 kts)

[VonHesse]

Can do Sir. I'll refine the numbers when I get home from work. I set it at X.5 because when you set it directly on a number(3, for example) the crew replies with the next number down ( in this case "aye Sir, set speed 2 knots). I wasn't sure who to trust, the crew, or the dial. Anyways, I'll be back with those numbers this afternoon.

Originally Posted by ETR3(SS)

Post I made here http://www.subsim.com/radioroom/show...7&postcount=19 is for stock s-boats.

if what VonHesse shows is correct then the numbers you are giving is not looking like the best fuel economy for s-boats so i must ask how you came to use these numbers and how certain are you these numbers you gave (9.5kts surfaced, 5kts submerged) are really correct?

[ETR3(SS)]

Originally Posted by WEBSTER

if what VonHesse shows is correct then the numbers you are giving is not looking like the best fuel economy for s-boats so i must ask how you came to use these numbers and how certain are you these numbers you gave (9.5kts surfaced, 5kts submerged) are really correct?

I took them directly from the sim file. I also assumed that our little s-boat would have the same confounding fuel efficiency problem that the other boats have at speeds less than 10kts. These new numbers may indeed be accurate, the s boat may not suffer from the same coding problem of the fleet boats.

well the fleet boats get the best fuel economy at roughly 50% (just below it actually) of the full speed so fleet boats get full speed of 20kts and the best fuel economy is at 9-9.5kts which is something like 47% of top speed.


i was expecting the s-boats to be about the same level of percentage (half of full speed) but i would not expect to see them use the same numbers as fleetboats because s-boats have top speed of only 13 kts stock or 14.5 if modded

a 9.5 kt speed is like 80% of the full speed which is ahead full setting for an s-boat