SUBSIM Radio Room Forums - Does anyone know about U-boat ranges?

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- - Does anyone know about U-boat ranges? (https://www.subsim.com/radioroom/showthread.php?t=88476)

I'm reasonably sure that it's the accepted standard to use nautical miles any time a ship's range is given, whether it says so in the text or not; just as displacements are (almost) always given in British Long Tons, which are 2240 pounds rather than 2000. That is why the standar British Hundredweight (as used in smaller guns with listings like "12pder/18#wt) is 112 pounds.

Quote:

Originally Posted by Ducimus

2.) the subs scale to on another as they did in WW2.

Yeah, I think that's the most important part. Relative scale between each of the u-boat types should matter more than the actual accuracy of the numbers.

Quote:

Originally Posted by Marhkimov

I've checked it over and over and over. Those values are pretty much correct... However, I have to correct myself. I think those are actually supposed to be nautical miles, not miles.

Either way, those are the exact numbers that SH3 is supposed to use.

Type IIA: 1600 nm @ 8 kts (sur) 35 nm @ 4 kts (sub)
Type IID: 5650 nm @ 8 kts (sur) 56 nm @ 4 kts (sub)

Type VIIB: 8700 nm @ 10 kts (sur) 90 nm @ 4 kts (sub)
Type VIIC: 8500 nm @ 10 kts (sur) 80 nm @ 4 kts (sub)
Type VIIC/41: 8500 nm @ 10 kts (sur) 80 nm @ 4 kts (sub)
Type VIIC/42: 12600 nm @ 10 kts (sur) 80 nm @ 4 kts (sub)

Type IXB: 12000 nm @ 10 kts (sur) 64 nm @ 4 kts (sub)
Type IXC: 13450 nm @ 10 kts (sur) 63 nm @ 4 kts (sub)
Type IXD2: 23700 nm @ 12 kts (sur) 57 nm @ 4 kts (sub)

Type XXI: 15500 nm @ 10 kts (sur) 340 nm @ 5 kts (sub)

The U-Boat Commander's Handbook

only lists three boats, VIIc, IXb, & IXc and gives the following:
VIIc
Range (nm)
@ 10kn surfaced 9,700.
@ 2kn submerged 180
Speed
Max surfaced 17.7 kn.
Max submerged 7.7 kn.

IXb
Range (nm)
@ 10kn surfaced 12,400
@ 2kn submerged 134
Speed
Max surfaced 18.2 kn.
Max submerged 7.7 kn.

IXc
Range (nm)
@ 10 kn surfaced 16,300
@ 2 kn submerged 128
Speed
Max surfaced 18.3 kn.
Max submerged 7.3 kn.

Hope this helped,

On a side note i noticed that 15,500 @ 12 knots for the XXI gives it a ludricrous range underwater.

Basically underwater at flank speed the same distance an IXC can go at 8 knots.

Either i did something weird or the game isnt handling diesal underwater and diesal surface quite the same.

Quote:

Originally Posted by Ducimus

On a side note i noticed that 15,500 @ 12 knots for the XXI gives it a ludricrous range underwater.

Do you mean 15,500 @ 10 knots?

Actually, I was testing at flank speed and the battery power was draining rather quickly.

No, 12.. i was experimenting with the range vs 10 and 12 knots with various subs.

Mainly because i noticed the developers used 12 knots in their values. But their distance was lower as well.

Maybe their 10K @ 12 is the same distance as 15K@ 10? I dunno.

EDIT:
>>Actually, I was testing at flank speed and the battery power was draining rather quickly.

Im talking about diesal with snorkel.

BUt yes, Flank will drain the bats fast. Very fast. Too fast.

Most i could ever easily accomplish was to fix the recharge so it went to 100%.

EDIT:2

Heres what i think. Range @ knot speed dicatates size of batteris installed.

Emotor HP dictates drain. You could probaly lengthen a flank speed run, by lowering the Emotor HP to 1000 (instead of my 2500, which is inplace of the default 5000), and increase your range @ kt speed.

But that would give you values a tad too unrealistic i think.

Your other option is to increase the bat bonus for the batteries in the CFG file. The larger the number the bigger the bat, the longer the recharge (i htink)