Shipbucket

Type 55- Black Madness Class

Type: SSI
Role: Hunter-Killer submarine
Design date: 2011

Double-Hulled-
AISI S45500 Stainless Steel inner-pressure hull
AISI S45500 Stainless Steel outer-pressure hull w/ titanium carbon nitride coating (TiCN)


Unit Price: 996 million USD/ 2009'FY USD


Length: 111.1 m
Beam: 12.9 m
Depth: 12.0 m

Kerb-weight: 8,178 t
Surfaced Displacement: 8,599 t

Reserve buoyancy: 5% (408.9 t) or/ 817,800 lbs

Crew: 101

Test Depth: 775 m
Never-exceed: 880 m
Crush Depth: 995 m
(Sigma: 1080)

Armament:

x10 660mm torpedo tubes
& 55 533mm, 610mm & 650mm torpedoes and/or mines/missiles

x10 VLS tubes

Sensors:

Spherical bow sonar: ACTIVE/Passive Ultra-Low frequency @ 150 KW (91 decibel operational) (225 decibel max)
Towed/stern sonar: PASSIVE High frequency @ 33 KW
Towed/stern sonar: PASSIVE low frequency @ 33 KW
Flank sonar: Wide aperture lightweight fiber optic sonar array (three flat panels mounted low along either side of the hull)
@ 25 KW each
Sail & Keel sonar: ACTIVE high frequency sonars; mounted in the sail and keel @ 70 KW each

Powerplant-

Electric power: 55,000 HP (733 t) 21 crew
Diesel power: 8,000 HP (32 t) 16 crew
HTP/H2O2 power: 35,000 HP (233.33 t) 12 crew

(two shafts driving twp pump-jets, contained in same over-sized shroud)

Silent running: 5 kts (181 HP)
Quiet running: 20 kts (11,579 HP) (Near silent running)
Max Submerged Speed hybrid-drive (HTP+battery electric): 39.6 kts (89,879 HP)
Max Submerged Speed electric-only: 33.6 kts (54,902 HP)
Max Surfaced Speed diesel-only: 10 kts (7,752 HP)

HTP subm range w/ batteries:

@ 5 kts = 9,897 nmi
@ 8 kts = 3,844 nmi
@ 12 kts = 1,683 nmi
@ 15 kts = 1,060 nmi
@ 20 kts = 579 nmi
@ 25 kts = 362 nmi
@ 31 kts = 231 nmi
@ 39 kts = 143 nmi

battery+electric ONLY subm range:

@ 5 kts = 1,349 nmi
@ 8 kts = 505 nmi
@ 12 kts = 199 nmi
@ 15 kts = 110 nmi
@ 20 kts = 45 nmi
@ 30 kts = 9 nmi

diesel surf range:

@ 10 kts = 7,752 nmi

Fuel/bunkerage:

Diesel: 1,200 t
Batteries: 900 t
H2O2: 300 t





S45500 Stainless-Steel ($4,244 per/ton)
Carbon, C <= 0.050 %
Chromium, Cr 11.8 %
Iron, Fe 73.0 %
Manganese, Mn <= 0.50 %
Molybdenum, Mo <= 0.50 %
Nickel, Ni 8.50 % 8.50 %
Niobium, Nb (Columbium, Cb) 2.0 %
Phosphorous, P <= 0.040 %
Silicon, Si <= 0.50 %
Sulfur, S <= 0.030 %
Titanium, Ti 1.10 %
Zirconium, Zr 2.0 %

RSA-708 T6 Aluminum Super Alloy ($2,027 to 2,687 per/ton)
Aluminum, Al 85.6 %
Copper, Cu 1.10 %
Magnesium, Mg 2.30 %
Zinc, Zn 11.0 %


Notes-

*How realistic is this? It uses Greg Locock's DreadCAD derived sub spreadsheet, which is highly realistic. It's actually pretty conservative on the Sigma, since S45500 would produce a much stronger Sigma than what I listed. However, since the spreadsheet can't model advanced materials, I used a slightly above average Sigma. This is about as realistic as you can get without having an engineering team draft up a feasibility study.*

*Nuclear reactors pose environmental problems should they be lost at sea. I sought to create a submarine, that was conventionally powered but with performance approaching that of a nuclear attack sub, if only for short periods of time. And, hydrogen peroxide technology has come a long way since it's messy origins in WW 2.*

*Why stainless steel? It's more expensive than steel-alloys ($1200-1600 ton) but significantly cheaper than titanium alloys ($17,000 to 20,000 per ton). It's corrosion resistant and has low magnetism, which is much more prominent in stainless steel than it is in regular low-magnetic steel. Additionally, S45500 is one of the strongest alloys on Earth, it's hard to make a better choice except if you had excessive budget concerns*

*Yes, Hydrogen Peroxide is dangerous. You wouldn't be telling me anything new by telling me this. But I'd say I prefer it over nuclear designs hands down. It's more of a personal preference.*

*Atlantis is an AU I have going on my HD. I was thinking about doing a different AU here on the forums. It's a state of the art cold-war style deep-diving, high performance sub designed as a blue-water combatant. It's also designed with conventional power, offering a non-nuclear attack sub option for countries without access to nuclear subs.*

*It's my first drawing people. Try to go easy.*

*Adv. notes:

HTP drives assume an average of 0.97 kg/HPh of hydrogen peroxide.
Batteries are calculated at 55 HPh/per ton
Electric motors are calculated at 75 HP per ton

*

_________________
"All your base are belong to us"

Catz looks good what I can see, you need to check your settings the image is compressed.

Photobucket shrinks it down or something. It isn't compressed on my HD at all.

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"All your base are belong to us"

I use photobucket and have no problem!
Just look here:
viewtopic.php?f=5&t=402

thanks heuhen! I checked and found it was an issue with my settings in photobucket. >_<

consider it so fixed. :-p

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"All your base are belong to us"

I see quite a lot of pixel errors, the sub is huge for an hunter killer, and it looks more like an boomer. also, I don't really get the shape of the tail of this thing, and where are the horizontal control surfaces?

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Drawings are credited with J.Scholtens
I ask of you to prove me wrong. Not say I am wrong, but prove it, because then I will have learned something new.
Shipbucket Wiki admin

Well it's an attack sub on par with the Seawolf in terms of displacement. It's a meter or so deeper in draft over the Seawolf, and a little wider...putting it on par with the Graney class. Since displacement and wave resistances are calculated, I don't decide those numbers, the spreadsheet does. It works like Springsharp, thus the given parameters are reasonably accurate based on the given sigma. Speed is also calculated based on displacement and resistances, thus that's pretty accurate as well. And it's dive planes are under the sail.

As for appearance, I placed the sail rearward, thus freeing room up front for VLS cells. Other than that I disagree that it looks like a boomer, since it's length is on par with attack subs.

It has a deeper draft, which is intended to accommodate the double decker torpedo loading room, which is a concept taken from the Seawolf class.

Update: Revised image.

_________________
"All your base are belong to us"

My only critique is that those torpedo tubes look huge.

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We can't stop here--this is Bat country!

If it's close enough to cast a shadow, I think the flying house wins initiative.

Bronies are like the Forsworn. Everyone agrees that they are a problem but nobody wants to expend the energy rooting them out.

"That is a very graphic analogy which aids understanding wonderfully while being, strictly speaking, wrong in every possible way."