Build-A-Cruiser : RRC

[Logi]

Do I have a 275mm gun? I'm not sure if I do.

I have 1 lvl 3 drydock and another pending. It looks good.

eltf, I think the main weight comes from your addition of a torpedo bulkhead. While the option is interesting, I don't know if it would be needed.

[Korpen]

A fairly balanced and straight forward design. Her protection is not very thick, but the main belt got at least decent coverage, and if she is to fight cruisers I think that is more important then thickness. The four turrets are arrange in "splendid cats"-style, and should be enough to blast away most smaller ships.

But compared to more recent designs she is a bit hamstrung by the 1912 engines.


Type IX, RRC Study laid down 1912

Displacement:
   10 000 t light; 10 653 t standard; 11 961 t normal; 13 008 t full load

Dimensions: Length overall / water x beam x draught
   557,74 ft / 557,74 ft x 62,34 ft x 23,79 ft (normal load)
   170,00 m / 170,00 m x 19,00 m  x 7,25 m

Armament:
      8 - 9,84" / 250 mm guns (4x2 guns), 485,02lbs / 220,00kg shells, 1912 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      12 - 4,72" / 120 mm guns (6x2 guns), 52,91lbs / 24,00kg shells, 1912 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
   Weight of broadside 4 515 lbs / 2 048 kg
   Shells per gun, main battery: 160
   4 - 17,7" / 450 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,23" / 82 mm   403,54 ft / 123,00 m   13,12 ft / 4,00 m
   Ends:   Unarmoured
     Main Belt covers 111 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,12" / 130 mm   2,87" / 73 mm      3,94" / 100 mm
   2nd:   2,95" / 75 mm   0,98" / 25 mm      1,97" / 50 mm

   - Armour deck: 1,18" / 30 mm, Conning tower: 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 66 076 shp / 49 292 Kw = 29,00 kts
   Range 10 000nm at 12,00 kts
   Bunker at max displacement = 2 355 tons

Complement:
   571 - 743

Cost:
   £1,186 million / $4,743 million

Distribution of weights at normal displacement:
   Armament: 556 tons, 4,6 %
   Armour: 1 846 tons, 15,4 %
      - Belts: 706 tons, 5,9 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 564 tons, 4,7 %
      - Armour Deck: 509 tons, 4,3 %
      - Conning Tower: 67 tons, 0,6 %
   Machinery: 2 635 tons, 22,0 %
   Hull, fittings & equipment: 4 624 tons, 38,7 %
   Fuel, ammunition & stores: 1 961 tons, 16,4 %
   Miscellaneous weights: 340 tons, 2,8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9 932 lbs / 4 505 Kg = 20,8 x 9,8 " / 250 mm shells or 1,4 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 3,0 ft / 0,9 m
   Roll period: 15,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0,85
   Seaboat quality  (Average = 1.00): 1,02

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,506
   Length to Beam Ratio: 8,95 : 1
   'Natural speed' for length: 23,62 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      24,61 ft / 7,50 m
      - Forecastle (16 %):   19,69 ft / 6,00 m
      - Mid (50 %):      16,40 ft / 5,00 m
      - Quarterdeck (15 %):   15,58 ft / 4,75 m
      - Stern:      18,04 ft / 5,50 m
      - Average freeboard:   17,72 ft / 5,40 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110,8 %
      - Above water (accommodation/working, high = better): 124,7 %
   Waterplane Area: 23 297 Square feet or 2 164 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 124 lbs/sq ft or 608 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,49
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[Logi]

Yes, I should get the 1916 engines tech soon, its really putting a hamper on my shipbuilding efforts.

And it does appear to be the most balanced and lightest of all the designs. I am curious though, if the speed is reduced to 27 how far does the weight drop?

[Korpen]

Yes, I should get the 1916 engines tech soon, its really putting a hamper on my shipbuilding efforts.

And it does appear to be the most balanced and lightest of all the designs. I am curious though, if the speed is reduced to 27 how far does the weight drop?

About 1500 ton smaller is a distinct possibility.

Type X, RRC Study laid down 1912

Displacement:
   8 500 t light; 9 120 t standard; 10 310 t normal; 11 262 t full load

Dimensions: Length overall / water x beam x draught
   518,37 ft / 518,37 ft x 58,40 ft x 22,97 ft (normal load)
   158,00 m / 158,00 m x 17,80 m  x 7,00 m

Armament:
      8 - 9,84" / 250 mm guns (4x2 guns), 485,02lbs / 220,00kg shells, 1912 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
     Main guns limited to end-on fire
     Aft Main mounts separated by engine room
      12 - 4,72" / 120 mm guns (6x2 guns), 52,91lbs / 24,00kg shells, 1912 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
   Weight of broadside 4 515 lbs / 2 048 kg
   Shells per gun, main battery: 160
   4 - 17,7" / 450 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2,95" / 75 mm   354,33 ft / 108,00 m   14,76 ft / 4,50 m
   Ends:   Unarmoured
     Main Belt covers 105 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5,12" / 130 mm   2,76" / 70 mm      3,82" / 97 mm
   2nd:   2,95" / 75 mm   0,98" / 25 mm      1,97" / 50 mm

   - Armour deck: 1,18" / 30 mm, Conning tower: 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 46 912 shp / 34 996 Kw = 27,00 kts
   Range 10 030nm at 12,00 kts
   Bunker at max displacement = 2 143 tons

Complement:
   511 - 665

Cost:
   £1,026 million / $4,105 million

Distribution of weights at normal displacement:
   Armament: 556 tons, 5,4 %
   Armour: 1 693 tons, 16,4 %
      - Belts: 645 tons, 6,3 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 540 tons, 5,2 %
      - Armour Deck: 448 tons, 4,4 %
      - Conning Tower: 60 tons, 0,6 %
   Machinery: 1 870 tons, 18,1 %
   Hull, fittings & equipment: 4 061 tons, 39,4 %
   Fuel, ammunition & stores: 1 810 tons, 17,6 %
   Miscellaneous weights: 320 tons, 3,1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9 534 lbs / 4 324 Kg = 20,0 x 9,8 " / 250 mm shells or 1,4 torpedoes
   Stability (Unstable if below 1.00): 1,09
   Metacentric height 2,7 ft / 0,8 m
   Roll period: 15,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 48 %
         - Recoil effect (Restricted arc if above 1.00): 1,03
   Seaboat quality  (Average = 1.00): 1,04

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,519
   Length to Beam Ratio: 8,88 : 1
   'Natural speed' for length: 22,77 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 44
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      24,61 ft / 7,50 m
      - Forecastle (15 %):   18,86 ft / 5,75 m
      - Mid (35 %):      16,08 ft / 4,90 m
      - Quarterdeck (15 %):   15,58 ft / 4,75 m
      - Stern:      18,04 ft / 5,50 m
      - Average freeboard:   17,11 ft / 5,21 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104,3 %
      - Above water (accommodation/working, high = better): 116,6 %
   Waterplane Area: 20 525 Square feet or 1 907 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 123 lbs/sq ft or 598 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,62
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate

[TexanCowboy]

Thicker Armour, thiner deck, more crew comfortable.


Reforma Republicii China, Reform Republic of China Combat Cruiser laid down 1917 (Engine 1912)

Displacement:
   10,757 t light; 11,316 t standard; 12,416 t normal; 13,296 t full load

Dimensions: Length overall / water x beam x draught
   608.70 ft / 600.00 ft x 59.00 ft x 22.00 ft (normal load)
   185.53 m / 182.88 m x 17.98 m  x 6.71 m

Armament:
      6 - 9.84" / 250 mm guns (3x2 guns), 476.75lbs / 216.25kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1917 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
      6 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      20 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 3,572 lbs / 1,620 kg
   Shells per gun, main battery: 150
   4 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.00" / 127 mm   470.00 ft / 143.26 m   16.00 ft / 4.88 m
   Ends:   2.00" / 51 mm   130.00 ft / 39.62 m   14.00 ft / 4.27 m
     Main Belt covers 121 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   6.00" / 152 mm   1.00" / 25 mm      1.00" / 25 mm
   2nd:   2.00" / 51 mm         -               -

   - Armour deck: 1.50" / 38 mm, Conning tower: 2.00" / 51 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 75,676 shp / 56,454 Kw = 30.00 kts
   Range 8,018nm at 12.00 kts
   Bunker at max displacement = 1,980 tons

Complement:
   587 - 764

Cost:
   £2.134 million / $8.538 million

Distribution of weights at normal displacement:
   Armament: 446 tons, 3.6 %
   Armour: 2,607 tons, 21.0 %
      - Belts: 1,659 tons, 13.4 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 234 tons, 1.9 %
      - Armour Deck: 691 tons, 5.6 %
      - Conning Tower: 23 tons, 0.2 %
   Machinery: 3,017 tons, 24.3 %
   Hull, fittings & equipment: 4,335 tons, 34.9 %
   Fuel, ammunition & stores: 1,660 tons, 13.4 %
   Miscellaneous weights: 350 tons, 2.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,166 lbs / 5,065 Kg = 23.4 x 9.8 " / 250 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 3.3 ft / 1.0 m
   Roll period: 13.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.558
   Length to Beam Ratio: 10.17 : 1
   'Natural speed' for length: 24.49 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      21.00 ft / 6.40 m
      - Forecastle (20 %):   17.00 ft / 5.18 m
      - Mid (50 %):      17.00 ft / 5.18 m
      - Quarterdeck (15 %):   17.00 ft / 5.18 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   17.32 ft / 5.28 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 109.8 %
      - Above water (accommodation/working, high = better): 126.6 %
   Waterplane Area: 24,891 Square feet or 2,312 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 111 lbs/sq ft or 540 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.11
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[Logi]

In the end, Korpen's design wins. The lighter displacement is too attracting.

Maddox's design will be reserved for maybe another Heavy Cruiser. As is Sachmle's.

Elfe's design was simply to large and Texan's design required a type 3 DD so I can't afford to build it.

[The Rock Doctor]

Not to be a pain, but let me note that Korpen's design is limited to end-on fire.  You'll need to tinker with it a bit.

[Logi]

Tsk, then tinker I shall!