Tirpitz

[ledeper]

Tirpitz, Esc Bb laid down 1922

Displacement:
   39.964 t light; 42.220 t standard; 44.802 t normal; 46.868 t full load

Dimensions: Length overall / water x beam x draught
   752,66 ft / 749,67 ft x 114,83 ft x 32,64 ft (normal load)
   229,41 m / 228,50 m x 35,00 m  x 9,95 m

Armament:
      8 - 17,91" / 455 mm guns (4x2 guns), 2.874,11lbs / 1.303,67kg shells, 1922 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 5,91" / 150 mm guns (6x2 guns), 102,98lbs / 46,71kg shells, 1922 Model
     Quick firing guns in deck mounts
     on side, all amidships
      10 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1922 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
   Weight of broadside 24.248 lbs / 10.999 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,8" / 350 mm   445,05 ft / 135,65 m   15,19 ft / 4,63 m
   Ends:   Unarmoured
   Upper:   4,72" / 120 mm   445,05 ft / 135,65 m   5,74 ft / 1,75 m
     Main Belt covers 91 % of normal length

   - Torpedo Bulkhead:
      1,57" / 40 mm   537,66 ft / 163,88 m   29,89 ft / 9,11 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,8" / 350 mm   9,84" / 250 mm      13,8" / 350 mm
   2nd:   1,97" / 50 mm   0,79" / 20 mm            -
   3rd:   0,39" / 10 mm         -               -

   - Armour deck: 5,91" / 150 mm, Conning tower: 11,81" / 300 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric cruising motors plus geared drives, 4 shafts, 79.945 shp / 59.639 Kw = 25,00 kts
   Range 8.500nm at 14,00 kts
   Bunker at max displacement = 4.649 tons

Complement:
   1.539 - 2.001

Cost:
   £11,794 million / $47,176 million

Distribution of weights at normal displacement:
   Armament: 3.031 tons, 6,8 %
   Armour: 16.087 tons, 35,9 %
      - Belts: 4.678 tons, 10,4 %
      - Torpedo bulkhead: 936 tons, 2,1 %
      - Armament: 3.539 tons, 7,9 %
      - Armour Deck: 6.613 tons, 14,8 %
      - Conning Tower: 321 tons, 0,7 %
   Machinery: 2.712 tons, 6,1 %
   Hull, fittings & equipment: 17.484 tons, 39,0 %
   Fuel, ammunition & stores: 4.838 tons, 10,8 %
   Miscellaneous weights: 650 tons, 1,5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     53.091 lbs / 24.082 Kg = 18,5 x 17,9 " / 455 mm shells or 8,8 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 7,4 ft / 2,3 m
   Roll period: 17,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 57 %
         - Recoil effect (Restricted arc if above 1.00): 0,50
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,558
   Length to Beam Ratio: 6,53 : 1
   'Natural speed' for length: 27,38 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   Bow angle (Positive = bow angles forward): 9,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18,86 ft / 5,75 m
      - Forecastle (10 %):   16,40 ft / 5,00 m
      - Mid (50 %):      16,40 ft / 5,00 m
      - Quarterdeck (15 %):   16,40 ft / 5,00 m
      - Stern:      16,40 ft / 5,00 m
      - Average freeboard:   16,50 ft / 5,03 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 87,5 %
      - Above water (accommodation/working, high = better): 122,9 %
   Waterplane Area: 60.530 Square feet or 5.623 Square metres
   Displacement factor (Displacement / loading): 97 %
   Structure weight / hull surface area: 224 lbs/sq ft or 1.093 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1,00
      - Longitudinal: 1,08
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[P3D]

You need more than 5m freeboard for a 230m ship IMHO.
Deck mounts need hoists.
Add large-caliber AA (8x88mm?).

[Guinness]

Was Tirpitz even a resident of the ESC, or did he end up in the DKB? He was Prussian wasn't he?

[Jefgte]

Prussian? of course, yes,

like his brother; Bismarck !!!


:D  :D  :D

[Sachmle]

Was Tirpitz even a resident of the ESC, or did he end up in the DKB? He was Prussian wasn't he?

IDK how, but Adm von Tirpitz is the father of the Ostsee Marine, not the Kaiserliche Marine.  :'(


As to the actual ship:

1. You're not protected against your own shells.
2. You're over Treaty limits.
3. Too slow for 1922.
4. Like P3D said on the AA. Fewer heavier guns is more period appropriate, even with the way things are going here as to AC vs Ships I really don't see anyone, realistically, jumping to that kind of AA suite yet.
5. Why upper belt w/ no casemates, but no end belt to protect your (limited) speed?

[ledeper]

http://www.navalism.org/index.php?topic=784.0
http://www.navalism.org/index.php?topic=1635.0

[Kaiser Kirk]

If investing in such a large vessel, with the North Sea as a potential theater of operations, I would think better seakeeping would be desirable. Certainly slow and easy roll for the long range shots your deck seems to expect.

For ammo, for a ship seemingly designed for long range, low % shots, I might consider slightly more than 100/gun actually reasonable.

As for the Armor, the deck is if anything overly thick, though it is likely layered.

The Upper belt can be useful against nuisance fires and what not, but shouldn't be protecting anything critical and so can be lowered to 50-75mm to exclude HE and SAP shells. I'll note that at 1.75m high, only shorter sailors can readily use that deck- presuming no pipes/fixtures.

The weight saved can go to the end belts Sachmle mentions, and with the short main belt that will help protect boyancy if far from base.

The main armor belt is at the maximum quality thickness,while it won't stop your own shells, it will stop most others. Adding more thickness directly won't be a 1:1 improvement,  but will have some effect.

While I don't think "too slow" is correct , I would say it should be the same speed as the Ocean class
battlewagons- 26kts for fleet speed.

I think the lesson of the Rift sea is that aerial torpedoes can be a threat. Some heavier AAG to knock down or merely disrupt torpedo bombers would be useful.

[maddox]

I don't see any problem. 

[Borys]

Ahoj!
I'm happy that my KKK equivalent is a better shooter:
http://www.navalism.org/index.php?topic=4209.msg49647#msg49647

The sim says 1920 and 42cm, but that will come in 1922.
The actual 1920 version will ship sixteen 33cm guns :)
Borys