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Main Archive => Navalism 3 Armed Forces => Armed Forces => New Ship Designs => Topic started by: Sachmle on October 25, 2009, 02:43:33 PM

Title: Would this be useful as a CL killer?
Post by: Sachmle on October 25, 2009, 02:43:33 PM
Armor should stop 6"/15cm shells as close as ~8,000yds. 194mm shells should beat 10cm/4" belts at 12,000yds or less.
Think Hawkins w/ twins w/o the wing turrets and the extra deck level one aft. 1 more gun total, of a larger size, w/ better armor.

laid down 1918 (Engine 1916)

Displacement:
   9,500 t light; 10,000 t standard; 10,858 t normal; 11,544 t full load

Dimensions: Length overall / water x beam x draught
   557.73 ft / 551.18 ft x 59.06 ft x 24.61 ft (normal load)
   170.00 m / 168.00 m x 18.00 m  x 7.50 m

Armament:
      8 - 7.64" / 194 mm guns (4x2 guns), 220.46lbs / 100.00kg shells, 1908 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      6 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, all amidships
      2 - 1.97" / 50.0 mm guns in single mounts, 3.86lbs / 1.75kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, all aft, all raised mounts - superfiring
   Weight of broadside 1,983 lbs / 900 kg
   Shells per gun, main battery: 250
   6 - 19.7" / 500 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   439.63 ft / 134.00 m   16.40 ft / 5.00 m
   Ends:   1.57" / 40 mm   111.55 ft / 34.00 m   9.84 ft / 3.00 m
     Main Belt covers 123 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.15" / 80 mm   0.79" / 20 mm      1.97" / 50 mm
   2nd:   1.97" / 50 mm         -               -
   3rd:   0.79" / 20 mm         -               -

   - Armour deck: 1.18" / 30 mm, Conning tower: 3.15" / 80 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 90,000 shp / 67,140 Kw = 31.88 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 1,544 tons

Complement:
   531 - 691

Cost:
   £2.024 million / $8.097 million

Distribution of weights at normal displacement:
   Armament: 250 tons, 2.3 %
   Armour: 1,694 tons, 15.6 %
      - Belts: 983 tons, 9.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 214 tons, 2.0 %
      - Armour Deck: 463 tons, 4.3 %
      - Conning Tower: 33 tons, 0.3 %
   Machinery: 3,353 tons, 30.9 %
   Hull, fittings & equipment: 3,853 tons, 35.5 %
   Fuel, ammunition & stores: 1,358 tons, 12.5 %
   Miscellaneous weights: 350 tons, 3.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7,899 lbs / 3,583 Kg = 35.5 x 7.6 " / 194 mm shells or 1.1 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 2.7 ft / 0.8 m
   Roll period: 15.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 66 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.474
   Length to Beam Ratio: 9.33 : 1
   'Natural speed' for length: 23.48 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 12.50 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      29.53 ft / 9.00 m
      - Forecastle (25 %):   22.97 ft / 7.00 m
      - Mid (50 %):      22.97 ft / 7.00 m (16.40 ft / 5.00 m aft of break)
      - Quarterdeck (20 %):   16.40 ft / 5.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   20.34 ft / 6.20 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 122.6 %
      - Above water (accommodation/working, high = better): 131.0 %
   Waterplane Area: 21,198 Square feet or 1,969 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 104 lbs/sq ft or 508 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.84
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent

250t 1912 Fire control
25t Long range wireless
25t 1905 Sehendes Auge
24t 12 2 t 1913 50cm torpedoes, 1 in tubes, 1 reload
26t reserve weight
Title: Re: Would this be useful as a CL killer?
Post by: TexanCowboy on October 25, 2009, 02:47:20 PM
You have a 7.64'' gun? And the twin turret? It's like a Demarce IV with less armour and more speed.
Title: Re: Would this be useful as a CL killer?
Post by: maddox on October 25, 2009, 02:48:57 PM
It seems useable (http://www.navalism.org/index.php?topic=1408.msg36371#msg36371)
Title: Re: Would this be useful as a CL killer?
Post by: Borys on October 25, 2009, 02:51:37 PM
Ahoj!
I have four similar ships, with four more on the way :)
Borys
Title: Re: Would this be useful as a CL killer?
Post by: Sachmle on October 25, 2009, 02:57:15 PM
Quote from: TexanCowboy on October 25, 2009, 02:47:20 PM
You have a 7.64'' gun? And the twin turret? It's like a Demarce IV with less armour and more speed.

http://www.navalism.org/index.php?topic=835.0 (http://www.navalism.org/index.php?topic=835.0)
Title: Re: Would this be useful as a CL killer?
Post by: Tanthalas on October 25, 2009, 03:54:15 PM
I kinda like it tbh
Title: Re: Would this be useful as a CL killer?
Post by: The Rock Doctor on October 25, 2009, 07:11:03 PM
DKB developed the guns after buying two old GC armored cruisers with an older variant of the gun.  Then the cruisers got sunk, and DKB didn't use them for anything. 
Then the Colombians bought the design for the new gun and starting thinking about very similar designs.

I think these would useful for a few functions - operations in the Rift Sea or around Indochina, and in shadowing Dutch frigates, for instance.  Don't think you'd be getting good value for them as commerce protection units, though - your likely opponents either send out much smaller or much larger ships, it seems.
Title: Re: Would this be useful as a CL killer?
Post by: mentat on October 26, 2009, 04:39:43 AM

i've always liked the Hawkins - wonderful names to start with - and Twins is a big improvement

Definitely like it - but 2 small gripes;

  - the Main Turret roofs seem a bit thin, and I think Borys 7.5s are a bit beefier - if also slower
Title: Re: Would this be useful as a CL killer?
Post by: miketr on October 26, 2009, 08:14:34 AM
The design has some potential I think.  If nothing else a near 32" knot scout able to push past light cruisers has use.  The problem is navalism has lots of battle cruisers and cruisers killers in it, a number with much heavier weapons.

Michael
Title: Re: Would this be useful as a CL killer?
Post by: Jefgte on October 26, 2009, 08:52:22 AM
Quote...  The problem is navalism has lots of battle cruisers and cruisers killers in it, a number with much heavier weapons...

That's a real problem.
Navalism is completly different in world seapower concept - Strategy & Tactic.
Ships like Derfflinger, Kongo & Hood are in quantity in the Navies...
...

IMO, 9500t cruiser is too expensive in BPs to kill 6" guns cruisers.


Jef