TL8-Concrete-Sub

http://popularmechanics.com/science/military/1998/12/concrete_submarines/

I've put in a small NPU to extend mission times to 100 days.

Also the torpedoes should be faster.

Crew: 6

Subassemblies: Vehicle +8, Body +8, Turret -1. 

P&P: ten 100,000-kWs rechargeable advanced batteries, 600-kW NPU (0.5 year duration; long term access), two 300-kW hydrojets (long term access). 

Fuel: 

Occ: six roomy crew stations (bridge access), six luxury extra space cabins (3,000 cf extra total), two 6-man full life support systems	Cargo: 600-cf cargo hold

Armor  F       RL      B       T       U
Body   4/1,000 4/1,000 4/1,000 4/1,000 4/1,000
Turret 4/1,000 4/1,000 4/1,000 4/1,000 4/1,000

Weaponry       Malf Type Damage        SS Acc 1/2D yds Max yds RoF TL
533mm launcher -    -    0d            30 0   0        0       1/3 8
torpedo        Crit Exp  4dx19000[12d] -  -   0        57,000  -   8

Equipment
All: extreme sound baffling (-16 hearing modifier); radical emission cloaking (-8 spotting modifier).  Body: full fire suppression system; six computer terminals; 600 man-days of provisions (life support installed); two 3-man airlocks; medium range sonar communicator (100-mile range; scrambler); active sonar system (24-mile range; active/passive); inertial navigation system; sonar IFF; two microframe computers (complexity 5; genius, neural net); sonar detector; composite armor volume; three 533mm light automatic launchers; 12 533mm torpedos (normal HEC warhead; stealthy, WG).  Turret: LLTV (magnification x20); searchlight (1-mile range, signal lamp shutter); medium range radio communicator (1,000-mile range; tight beam, scrambler); GPS; advanced radar/laser detector; long range radio direction finder (1,000-mile range; receive only); full stabilization; radical stealth (-8 spotting modifier); ten foot periscope.  

Statistics
Size: [LxWxH] 73’x22’x22’	Payload: 13,200 lbs.	Lwt.: 1,958,569 lbs.

Volume: 35,551 cf	Maint.: 2.38 hours (40.3 mh/day)	Price: $70,569,633 

HT: 9	HP: 39,000 [Body], 56 [Turret]. 
Water Performance: Top Speed 9 mph, wAcc 0.1 mph/s, wDec 2 mph/s (2.05 mph/s), wMR 0.1, wSR 5, Draft 16.8 ft, Drag 3,131, Flotation 2,221,933 lbs.

Underwater Performance: Top Speed 14 mph, uAcc 0.1 mph/s, uDec 2 mph/s (2.05 mph/s), uMR 0.1, uSR 5, Draft 43.5 ft, Drag 851, Test Depth 1,515 yds, Crush Depth 3,030 yds.

Design Notes: 
TL8 extra heavy frame expensive materials [Vehicle].
TL8 DR 1,000 standard composite [Vehicle].
Operating Duration:  21 M 20 S.
Payload Cost: $77,003,600
Vehicle Features: computerized controls, duplicate controls, sealed, no streamlining.
Water Features:  advanced submarine lines, flotation, hydrodynamic.
Underwater Features: submersible.
Body: total compartmentalization.
Turret: fixed rotation, total compartmentalization.
Volume: 35,549 cf [Body], 1.89 cf [Turret].
Area: 6,500 sf [Body], 9 sf [Turret].
Book Options: Vehicles Expansion crush depth.