[REQ] Longer battery life

[hyperion2206]

Originally Posted by Banquet

Would it be hard to mod longer battery life? I tested this in my last patrol and was getting about 5 hours at 2/3 and 7-8 hours at 1/3 before the battery was down to about 15% and I had to surface.

It makes patrols near Japan very difficult. In reality they were mostly operating at periscope depth during the day and charging the battery on the surface at night. Curently there is no way to do this in the game as the battery just doesn't last long enough!

If anyone can mod this to more realistic levels it would be great!

Setting your speed manually to 2 knots will give you about 12 hours under warter, that should be enough IMHO.

[Schlageter-JG26]

So US subs did not have snorkels?

[joea]

Originally Posted by Schlageter-JG26

So US subs did not have snorkels?

No. Not during the war.

[CCIP]

I took a look at the propulsion settings.

I wonder if tweaking these propulsion values to resemble SHIII's mods closer (albeit keeping a higher max speed) might produce a more plausible result (even if not numerically accurate) :hmm:

[CCIP]

By the way, it seems the Porpoise has a significantly shorter (-25%) submerged range than the Gato - is that accurate?

Also, why is it that S-class has the greatest submerged range of all? (100miles at 5kt)
Sounds excessive to me!

[CCIP]

Okay, I've corrected the fleet boat battery ranges. Not sure what to think of the recharge times, but the submerged endurance is basically identical to your charts now.

Pending the confirmation regarding Porpoise and S-class performance, I can release it!

[Banquet]

CCIP, hope you can crack this! Here's some info I posted on another thread.. not sure if helps you much. I'm not sure of the S class submerged range, but it did have a top class submerged speed due to it's age (the Navy concentrated more on submerged speed over other features in WWI). The Gato certainly has the best submerged range in this data;


Quote
'The old Silent Hunter 1 manual has stats for a few of the subs;

Salmon;
85 miles at 5 knots submerged (it says in the notes 'battery capacity substantially increased' over previous subs)


T Class (not in SH4 I know - but this maybe an average the Salmon was increased over) - actually I think the Gar is a T class?
60 Miles at 5 knots submerged


Gato, Balao and Tench;
95 miles at 5 knots submerged

It doesn't give this info on the other subs unfortunately.'

[Krupp]

[/quote]
Setting your speed manually to 2 knots will give you about 12 hours under warter, that should be enough IMHO.[/quote]


12 hours is not even remotely enough. Here's some stats from original diagram USN Fleet submarines manualthingie.

Maximum Time Submerged and Cruising Range vs. Submerged Speed Knots

knots--miles(peace-time)-- miles (war-time) --hours(peace-time) -hours(war-time)
2 ------73 --------------100-110 ------------36 ----------------55
3 ------69 --------------100-105 ------------24 ----------------38
4 ------55 --------------83 -----------------14 -----------------24
5 ------40 --------------64 ------------------8.5 ---------------14.5
6 ------30 --------------48 ------------------5 -----------------9
7 ------20 --------------31 -----------------2.6 ----------------4.8
8 ------14 --------------23 -----------------1.6 ----------------2.6
9 ------9 ---------------15 ------------------1 -----------------1.5
10 -----10 --------------X--------------------X-----------------X


In game, the Porpoise class can do submerged travel (with 3 knots) about 33 nautical miles in 11.5 hours. After that the recharging took only 1 hour (from 9% to 100% battery charge).

Something is biased, and without TT Tweaker, we can't adjust those I guess.

[Sgian Dubh]

Setting your speed manually to 2 knots will give you about 12 hours under warter, that should be enough IMHO.[/quote]


12 hours is not even remotely enough. Here's some stats from original diagram USN Fleet submarines manualthingie.

Maximum Time Submerged and Cruising Range vs. Submerged Speed Knots

knots--miles(peace-time)-- miles (war-time) --hours(peace-time) -hours(war-time)
2 ------73 --------------100-110 ------------36 ----------------55
3 ------69 --------------100-105 ------------24 ----------------38
4 ------55 --------------83 -----------------14 -----------------24
5 ------40 --------------64 ------------------8.5 ---------------14.5
6 ------30 --------------48 ------------------5 -----------------9
7 ------20 --------------31 -----------------2.6 ----------------4.8
8 ------14 --------------23 -----------------1.6 ----------------2.6
9 ------9 ---------------15 ------------------1 -----------------1.5
10 -----10 --------------X--------------------X-----------------X


In game, the Porpoise class can do submerged travel (with 3 knots) about 33 nautical miles in 11.5 hours. After that the recharging took only 1 hour (from 9% to 100% battery charge).

Something is biased, and without TT Tweaker, we can't adjust those I guess.[/quote]

Battery mod definitely needs a tweak here.

I was wondering the same thing. Even at 2 knots you can't stay under for the duration of a summer's day near Japan. Shoot, at these characteristics evena mildly aggressinve escourt could keep you down until your battery was dead.