Battleships for Peru

[Sachmle]

4x4 90mm guns are placed on the superstructures at the base of the funnels
note, the BB is 26m (85ft) beam. In top view, there is enough place.

I never install guns on the turrets  :o  , gunners are too exposed  :(  , I prefer to install them in the superstructures with protection front by light armour & aft by funnel.

"A living gunner is more useful that a injured or dead one".



Jef  ;)

KK, should have thought about the beam....  :-[

[Jefgte]

Note the extrem front & aft magasines, they are under the barbette...
Because the belt is just 104m lenght...probably too short.

  ???  ???  ???

I must certainly increase the lenght of the belt to 108m to have a good symetrical disposition for the magasines, similar to middle turrets.

...Or & decrease the % of the forecastle & quaterdeck from 18% to 17.5 or 17%


Jef  ;)

[Jefgte]

Pocket super dreadnought

15200T-2T3x340, Peru BB laid down 1915

Displacement:
   15 200 t light; 15 997 t standard; 17 029 t normal; 17 855 t full load

Dimensions: Length overall / water x beam x draught
   554.46 ft / 554.46 ft x 82.02 ft x 22.79 ft (normal load)
   169.00 m / 169.00 m x 25.00 m  x 6.95 m

Armament:
      6 - 13.39" / 340 mm guns (2x3 guns), 1 199.24lbs / 543.97kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1915 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      8 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1915 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 8 022 lbs / 3 639 kg
   Shells per gun, main battery: 100
   4 - 21.0" / 533 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   321.52 ft / 98.00 m   10.17 ft / 3.10 m
   Ends:   4.02" / 102 mm   223.10 ft / 68.00 m   10.17 ft / 3.10 m
     9.84 ft / 3.00 m Unarmoured ends
   Upper:   3.00" / 76 mm   321.52 ft / 98.00 m   8.01 ft / 2.44 m
     Main Belt covers 89 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   321.52 ft / 98.00 m   22.64 ft / 6.90 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   4.72" / 120 mm      11.8" / 300 mm
   2nd:   2.00" / 51 mm         -               -
   3rd:   1.97" / 50 mm         -               -
   4th:   0.79" / 20 mm         -               -
   5th:   0.50" / 13 mm         -               -

   - Armour deck: 3.35" / 85 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 24 000 shp / 17 904 Kw = 20.78 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 1 859 tons

Complement:
   744 - 968

Cost:
   £2.184 million / $8.737 million

Distribution of weights at normal displacement:
   Armament: 1 003 tons, 5.9 %
   Armour: 6 349 tons, 37.3 %
      - Belts: 2 631 tons, 15.5 %
      - Torpedo bulkhead: 424 tons, 2.5 %
      - Armament: 1 091 tons, 6.4 %
      - Armour Deck: 2 012 tons, 11.8 %
      - Conning Tower: 191 tons, 1.1 %
   Machinery: 909 tons, 5.3 %
   Hull, fittings & equipment: 6 519 tons, 38.3 %
   Fuel, ammunition & stores: 1 830 tons, 10.7 %
   Miscellaneous weights: 420 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23 798 lbs / 10 795 Kg = 19.8 x 13.4 " / 340 mm shells or 4.6 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.49
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.575
   Length to Beam Ratio: 6.76 : 1
   'Natural speed' for length: 23.55 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:      22.31 ft / 6.80 m
      - Forecastle (19 %):   17.06 ft / 5.20 m
      - Mid (30 %):      13.78 ft / 4.20 m
      - Quarterdeck (18 %):   13.78 ft / 4.20 m
      - Stern:      13.78 ft / 4.20 m
      - Average freeboard:   14.98 ft / 4.57 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88.9 %
      - Above water (accommodation/working, high = better): 117.0 %
   Waterplane Area: 32 492 Square feet or 3 019 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 151 lbs/sq ft or 737 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.20
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Jefgte]

Here are some drawings study about the BB Atahualpa actually in Callao Shipyards
This 18000t BB, laid down in 1911 is actualy, mid 1912, about 4750t assembly.

Main characs:
18000tl - 21467tfl
168m x 26m x 7.51m
4T2x340mm + 12x120mm + 16x90mm + 4x12.7mm + 4subTLTx533mm
Belt 340-102
Deck 85
Turrets 340-102
Barbettes 300
Blockaus 320

29000SHP-21.13kts
7000nm@12kts










Jef  ;)

[Jefgte]

Here are 1915 projects, these BB 'll use the new triple 340mm turret

20300T-3T3x340-AQY, Peru BB laid down 1915

Displacement:
   20 300 t light; 21 581 t standard; 22 980 t normal; 24 099 t full load

Dimensions: Length overall / water x beam x draught
   554.46 ft / 554.46 ft x 88.58 ft x 26.58 ft (normal load)
   169.00 m / 169.00 m x 27.00 m  x 8.10 m

Armament:
      6 - 13.39" / 340 mm guns (2x3 guns), 1 200.00lbs / 544.31kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      3 - 13.39" / 340 mm guns (1x3 guns), 1 199.24lbs / 543.97kg shells, 1915 Model
     Breech loading guns in a turret (on a barbette)
     on centreline amidships
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1915 Model
     Breech loading guns in casemate mounts
     on side, all amidships
      16 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 11 802 lbs / 5 353 kg
   Shells per gun, main battery: 120
   4 - 21.0" / 533 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   334.65 ft / 102.00 m   12.73 ft / 3.88 m
   Ends:   5.91" / 150 mm   196.85 ft / 60.00 m   10.17 ft / 3.10 m
     22.97 ft / 7.00 m Unarmoured ends
   Upper:   4.72" / 120 mm   334.65 ft / 102.00 m   8.01 ft / 2.44 m
     Main Belt covers 93 % of normal length

   - Torpedo Bulkhead:
      1.77" / 45 mm   334.65 ft / 102.00 m   25.62 ft / 7.81 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   4.72" / 120 mm      13.4" / 340 mm
   2nd:   13.4" / 340 mm   4.72" / 120 mm      13.4" / 340 mm
   3rd:   1.97" / 50 mm         -               -
   4th:   0.79" / 20 mm         -               -
   5th:   0.79" / 20 mm         -               -

   - Armour deck: 3.94" / 100 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 32 021 shp / 23 888 Kw = 21.28 kts
   Range 8 000nm at 12.00 kts
   Bunker at max displacement = 2 518 tons

Complement:
   933 - 1 213

Cost:
   £3.082 million / $12.329 million

Distribution of weights at normal displacement:
   Armament: 1 475 tons, 6.4 %
   Armour: 8 719 tons, 37.9 %
      - Belts: 3 552 tons, 15.5 %
      - Torpedo bulkhead: 562 tons, 2.4 %
      - Armament: 1 716 tons, 7.5 %
      - Armour Deck: 2 656 tons, 11.6 %
      - Conning Tower: 233 tons, 1.0 %
   Machinery: 1 213 tons, 5.3 %
   Hull, fittings & equipment: 8 468 tons, 36.9 %
   Fuel, ammunition & stores: 2 679 tons, 11.7 %
   Miscellaneous weights: 425 tons, 1.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27 806 lbs / 12 613 Kg = 23.2 x 13.4 " / 340 mm shells or 5.0 torpedoes
   Stability (Unstable if below 1.00): 1.08
   Metacentric height 4.9 ft / 1.5 m
   Roll period: 16.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.57
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.616
   Length to Beam Ratio: 6.26 : 1
   'Natural speed' for length: 23.55 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   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:      22.31 ft / 6.80 m
      - Forecastle (18 %):   17.39 ft / 5.30 m
      - Mid (30 %):      14.11 ft / 4.30 m
      - Quarterdeck (18 %):   14.11 ft / 4.30 m
      - Stern:      14.11 ft / 4.30 m
      - Average freeboard:   15.25 ft / 4.65 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.5 %
      - Above water (accommodation/working, high = better): 107.3 %
   Waterplane Area: 36 462 Square feet or 3 387 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 175 lbs/sq ft or 852 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.38
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

-------------------

24200T-4T3x340-APQY, Peru BB laid down 1915

Displacement:
   24 199 t light; 25 688 t standard; 27 257 t normal; 28 513 t full load

Dimensions: Length overall / water x beam x draught
   620.08 ft / 620.08 ft x 91.86 ft x 27.46 ft (normal load)
   189.00 m / 189.00 m x 28.00 m  x 8.37 m

Armament:
      6 - 13.39" / 340 mm guns (2x3 guns), 1 200.00lbs / 544.31kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      6 - 13.39" / 340 mm guns (2x3 guns), 1 199.24lbs / 543.97kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1915 Model
     Breech loading guns in casemate mounts
     on side, all amidships
      16 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 15 400 lbs / 6 985 kg
   Shells per gun, main battery: 105
   4 - 21.0" / 533 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   374.02 ft / 114.00 m   12.01 ft / 3.66 m
   Ends:   4.72" / 120 mm   223.10 ft / 68.00 m   10.17 ft / 3.10 m
     22.97 ft / 7.00 m Unarmoured ends
   Upper:   4.72" / 120 mm   374.02 ft / 114.00 m   8.01 ft / 2.44 m
     Main Belt covers 93 % of normal length

   - Torpedo Bulkhead:
      1.77" / 45 mm   374.02 ft / 114.00 m   27.30 ft / 8.32 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   4.72" / 120 mm      13.4" / 340 mm
   2nd:   13.4" / 340 mm   4.72" / 120 mm      13.4" / 340 mm
   3rd:   1.97" / 50 mm         -               -
   4th:   0.79" / 20 mm         -               -
   5th:   0.50" / 13 mm         -               -

   - Armour deck: 3.94" / 100 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 33 000 shp / 24 618 Kw = 21.07 kts
   Range 8 000nm at 12.00 kts
   Bunker at max displacement = 2 824 tons

Complement:
   1 059 - 1 378

Cost:
   £3.838 million / $15.351 million

Distribution of weights at normal displacement:
   Armament: 1 924 tons, 7.1 %
   Armour: 10 022 tons, 36.8 %
      - Belts: 3 684 tons, 13.5 %
      - Torpedo bulkhead: 669 tons, 2.5 %
      - Armament: 2 345 tons, 8.6 %
      - Armour Deck: 3 063 tons, 11.2 %
      - Conning Tower: 261 tons, 1.0 %
   Machinery: 1 250 tons, 4.6 %
   Hull, fittings & equipment: 10 563 tons, 38.8 %
   Fuel, ammunition & stores: 3 058 tons, 11.2 %
   Miscellaneous weights: 440 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32 549 lbs / 14 764 Kg = 27.1 x 13.4 " / 340 mm shells or 5.5 torpedoes
   Stability (Unstable if below 1.00): 1.07
   Metacentric height 5.0 ft / 1.5 m
   Roll period: 17.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.68
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.610
   Length to Beam Ratio: 6.75 : 1
   'Natural speed' for length: 24.90 kts
   Power going to wave formation at top speed: 42 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:      24.93 ft / 7.60 m
      - Forecastle (18 %):   18.37 ft / 5.60 m
      - Mid (30 %):      15.09 ft / 4.60 m
      - Quarterdeck (18 %):   15.09 ft / 4.60 m
      - Stern:      15.09 ft / 4.60 m
      - Average freeboard:   16.35 ft / 4.98 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.5 %
      - Above water (accommodation/working, high = better): 116.5 %
   Waterplane Area: 42 052 Square feet or 3 907 Square metres
   Displacement factor (Displacement / loading): 96 %
   Structure weight / hull surface area: 188 lbs/sq ft or 917 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.25
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Borys]

Ahoj!
I prefer the 12 gunned one. But both are nice. Well armoured, with a good kick.
The oneworrying thing is the sability - I personally never go below 1,1 in my large ships. I'd sacrifice a bit of gun platform to get better survavibility 65% gunplatform still is good.
Borys

[Jefgte]

Fine adjustements on Autofagasta class

Autofagasta - LD 1905 - engine 1906 - in service 1908
La Paz - LD 1908 - engine 1909 - in service 1911

Autofagasta class, Peru 12300T BB laid down 1905 (Engine 1906)

Displacement:
   12 300 t light; 12 940 t standard; 13 884 t normal; 14 639 t full load

Dimensions: Length overall / water x beam x draught
   492.13 ft / 492.13 ft x 78.74 ft x 21.08 ft (normal load)
   150.00 m / 150.00 m x 24.00 m  x 6.42 m

Armament:
      4 - 13.39" / 340 mm guns (2x2 guns), 1 200.00lbs / 544.31kg shells, 1905 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      10 - 5.98" / 152 mm guns in single mounts, 107.15lbs / 48.60kg shells, 1905 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      8 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1905 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 6 050 lbs / 2 744 kg
   Shells per gun, main battery: 104
   4 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.6" / 320 mm   328.08 ft / 100.00 m   9.19 ft / 2.80 m
   Ends:   3.00" / 76 mm   124.67 ft / 38.00 m   8.01 ft / 2.44 m
     39.37 ft / 12.00 m Unarmoured ends
   Upper:   2.36" / 60 mm   328.08 ft / 100.00 m   7.55 ft / 2.30 m
     Main Belt covers 103 % of normal length

   - Torpedo Bulkhead:
      1.18" / 30 mm   328.08 ft / 100.00 m   20.96 ft / 6.39 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.6" / 320 mm   3.94" / 100 mm      11.0" / 280 mm
   2nd:   2.36" / 60 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 2.95" / 75 mm, Conning tower: 11.02" / 280 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 19 300 shp / 14 398 Kw = 20.02 kts
   Range 7 000nm at 10.00 kts
   Bunker at max displacement = 1 699 tons

Complement:
   639 - 831

Cost:
   £1.241 million / $4.963 million

Distribution of weights at normal displacement:
   Armament: 756 tons, 5.4 %
   Armour: 4 854 tons, 35.0 %
      - Belts: 2 022 tons, 14.6 %
      - Torpedo bulkhead: 301 tons, 2.2 %
      - Armament: 854 tons, 6.1 %
      - Armour Deck: 1 541 tons, 11.1 %
      - Conning Tower: 137 tons, 1.0 %
   Machinery: 1 253 tons, 9.0 %
   Hull, fittings & equipment: 5 087 tons, 36.6 %
   Fuel, ammunition & stores: 1 584 tons, 11.4 %
   Miscellaneous weights: 350 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18 632 lbs / 8 451 Kg = 15.5 x 13.4 " / 340 mm shells or 3.4 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 5.1 ft / 1.6 m
   Roll period: 14.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.42
   Seaboat quality  (Average = 1.00): 1.39

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.595
   Length to Beam Ratio: 6.25 : 1
   'Natural speed' for length: 22.18 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   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:      20.34 ft / 6.20 m
      - Forecastle (18 %):   17.06 ft / 5.20 m
      - Mid (50 %):      13.78 ft / 4.20 m
      - Quarterdeck (18 %):   13.78 ft / 4.20 m
      - Stern:      13.78 ft / 4.20 m
      - Average freeboard:   15.13 ft / 4.61 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.3 %
      - Above water (accommodation/working, high = better): 122.8 %
   Waterplane Area: 28 209 Square feet or 2 621 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 136 lbs/sq ft or 664 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.38
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Jefgte]

1915 project, 50% more powerfull than Atahualpa class
Same disposition plus, B & X turrets superfiring

26000T-6T2x340-AB-PQ-XY, Peru BB laid down 1915

Displacement:
   26 000 t light; 27 528 t standard; 29 174 t normal; 30 490 t full load

Dimensions: Length overall / water x beam x draught
   639.76 ft / 639.76 ft x 98.43 ft x 27.25 ft (normal load)
   195.00 m / 195.00 m x 30.00 m  x 8.31 m

Armament:
      8 - 13.39" / 340 mm guns (4x2 guns), 1 200.00lbs / 544.31kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 2 raised mounts
     Aft Main mounts separated by engine room
      4 - 13.39" / 340 mm guns (2x2 guns), 1 200.00lbs / 544.31kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      16 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1915 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      8 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 15 437 lbs / 7 002 kg
   Shells per gun, main battery: 106
   4 - 21.0" / 533 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   360.89 ft / 110.00 m   12.73 ft / 3.88 m
   Ends:   4.02" / 102 mm   255.91 ft / 78.00 m   10.17 ft / 3.10 m
     22.97 ft / 7.00 m Unarmoured ends
   Upper:   3.00" / 76 mm   360.89 ft / 110.00 m   8.01 ft / 2.44 m
     Main Belt covers 87 % of normal length

   - Torpedo Bulkhead:
      1.77" / 45 mm   360.89 ft / 110.00 m   27.10 ft / 8.26 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   4.02" / 102 mm      11.8" / 300 mm
   2nd:   13.4" / 340 mm   4.02" / 102 mm      11.8" / 300 mm
   3rd:   1.97" / 50 mm         -               -
   4th:   0.79" / 20 mm         -               -
   5th:   0.50" / 13 mm         -               -

   - Armour deck: 3.35" / 85 mm, Conning tower: 12.60" / 320 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 34 000 shp / 25 364 Kw = 21.03 kts
   Range 8 000nm at 12.00 kts
   Bunker at max displacement = 2 962 tons

Complement:
   1 115 - 1 450

Cost:
   £3.942 million / $15.769 million

Distribution of weights at normal displacement:
   Armament: 1 929 tons, 6.6 %
   Armour: 10 328 tons, 35.4 %
      - Belts: 3 554 tons, 12.2 %
      - Torpedo bulkhead: 641 tons, 2.2 %
      - Armament: 3 038 tons, 10.4 %
      - Armour Deck: 2 838 tons, 9.7 %
      - Conning Tower: 257 tons, 0.9 %
   Machinery: 1 288 tons, 4.4 %
   Hull, fittings & equipment: 12 006 tons, 41.2 %
   Fuel, ammunition & stores: 3 173 tons, 10.9 %
   Miscellaneous weights: 450 tons, 1.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40 263 lbs / 18 263 Kg = 33.6 x 13.4 " / 340 mm shells or 6.8 torpedoes
   Stability (Unstable if below 1.00): 1.06
   Metacentric height 5.5 ft / 1.7 m
   Roll period: 17.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.73
   Seaboat quality  (Average = 1.00): 1.34

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.595
   Length to Beam Ratio: 6.50 : 1
   'Natural speed' for length: 25.29 kts
   Power going to wave formation at top speed: 41 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   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:      28.22 ft / 8.60 m
      - Forecastle (18 %):   21.33 ft / 6.50 m
      - Mid (40 %):      18.04 ft / 5.50 m
      - Quarterdeck (18 %):   18.04 ft / 5.50 m
      - Stern:      18.04 ft / 5.50 m
      - Average freeboard:   19.49 ft / 5.94 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 85.5 %
      - Above water (accommodation/working, high = better): 145.7 %
   Waterplane Area: 45 840 Square feet or 4 259 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 195 lbs/sq ft or 952 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.38
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Sachmle]

*Notes to self he's glad Peru is a friend/ally*

Try drawing that. I tried a similar layout, and I think you'll find that the belt is to short to cover all the necessary things....and I think a 85mm deck is probably stronger than needed. I've run BigGun on most of the guns in Nverse and at 12kyds most won't punch through anything thicker than 2.5". Korpen uses NAaB and usually gets different numbers, so I'd be interested to see what he says on this. Nice ship though.

[Jefgte]

Fast BB study for Peru

4T3x340-APQY, Peru BB laid down 1915 (Engine 1912)

Displacement:
   30 000 t light; 31 558 t standard; 33 585 t normal; 35 207 t full load

Dimensions: Length overall / water x beam x draught
   718.50 ft / 718.50 ft x 98.43 ft x 30.50 ft (normal load)
   219.00 m / 219.00 m x 30.00 m  x 9.30 m

Armament:
      6 - 13.39" / 340 mm guns (2x3 guns), 1 200.00lbs / 544.31kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      6 - 13.39" / 340 mm guns (2x3 guns), 1 199.24lbs / 543.97kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1915 Model
     Breech loading guns in casemate mounts
     on side, all amidships
      8 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 15 222 lbs / 6 905 kg
   Shells per gun, main battery: 100
   4 - 21.0" / 533 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   485.56 ft / 148.00 m   12.73 ft / 3.88 m
   Ends:   4.02" / 102 mm   177.17 ft / 54.00 m   9.45 ft / 2.88 m
     55.77 ft / 17.00 m Unarmoured ends
   Upper:   1.77" / 45 mm   485.56 ft / 148.00 m   8.01 ft / 2.44 m
     Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
      1.77" / 45 mm   485.56 ft / 148.00 m   30.35 ft / 9.25 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   4.02" / 102 mm      11.8" / 300 mm
   2nd:   13.4" / 340 mm   4.02" / 102 mm      11.8" / 300 mm
   3rd:   1.77" / 45 mm         -               -
   4th:   0.79" / 20 mm         -               -
   5th:   0.50" / 13 mm         -               -

   - Armour deck: 3.15" / 80 mm, Conning tower: 12.60" / 320 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 94 000 shp / 70 124 Kw = 27.34 kts
   Range 8 000nm at 12.00 kts
   Bunker at max displacement = 3 649 tons

Complement:
   1 239 - 1 612

Cost:
   £4.615 million / $18.458 million

Distribution of weights at normal displacement:
   Armament: 1 902 tons, 5.7 %
   Armour: 10 622 tons, 31.6 %
      - Belts: 4 071 tons, 12.1 %
      - Torpedo bulkhead: 966 tons, 2.9 %
      - Armament: 2 440 tons, 7.3 %
      - Armour Deck: 2 862 tons, 8.5 %
      - Conning Tower: 283 tons, 0.8 %
   Machinery: 3 748 tons, 11.2 %
   Hull, fittings & equipment: 13 287 tons, 39.6 %
   Fuel, ammunition & stores: 3 585 tons, 10.7 %
   Miscellaneous weights: 440 tons, 1.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     38 675 lbs / 17 543 Kg = 32.2 x 13.4 " / 340 mm shells or 5.8 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 5.9 ft / 1.8 m
   Roll period: 17.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.63
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.545
   Length to Beam Ratio: 7.30 : 1
   'Natural speed' for length: 26.80 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:      29.53 ft / 9.00 m
      - Forecastle (18 %):   22.31 ft / 6.80 m
      - Mid (40 %):      19.03 ft / 5.80 m
      - Quarterdeck (18 %):   19.03 ft / 5.80 m
      - Stern:      19.03 ft / 5.80 m
      - Average freeboard:   20.50 ft / 6.25 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103.5 %
      - Above water (accommodation/working, high = better): 148.0 %
   Waterplane Area: 49 123 Square feet or 4 564 Square metres
   Displacement factor (Displacement / loading): 99 %
   Structure weight / hull surface area: 193 lbs/sq ft or 941 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.32
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Jefgte]

I have seen, like you, some big BBs projects for the years to come - more than 30.000t.
I study a kind of Pocket BB with very big guns.
I think, the only chance for a small navy to be respected
----------------------------

25000T-2T3x420-AY, Peru BB laid down 1920

Displacement:
   25 000 t light; 26 380 t standard; 28 021 t normal; 29 334 t full load

Dimensions: Length overall / water x beam x draught
   649.61 ft / 649.61 ft x 108.27 ft x 27.08 ft (normal load)
   198.00 m / 198.00 m x 33.00 m  x 8.25 m

Armament:
      6 - 16.54" / 420 mm guns (2x3 guns), 2 260.56lbs / 1 025.37kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      8 - 5.98" / 152 mm guns (4x2 guns), 107.15lbs / 48.60kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on side, evenly spread
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1920 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      8 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1920 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1920 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 14 561 lbs / 6 605 kg
   Shells per gun, main battery: 100
   4 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.4" / 340 mm   341.21 ft / 104.00 m   12.73 ft / 3.88 m
   Ends:   4.02" / 102 mm   275.59 ft / 84.00 m   9.19 ft / 2.80 m
     32.81 ft / 10.00 m Unarmoured ends
   Upper:   1.97" / 50 mm   341.21 ft / 104.00 m   8.01 ft / 2.44 m
     Main Belt covers 81 % of normal length

   - Torpedo Bulkhead:
      1.97" / 50 mm   341.21 ft / 104.00 m   26.84 ft / 8.18 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   4.72" / 120 mm      13.4" / 340 mm
   2nd:   4.72" / 120 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   0.79" / 20 mm         -               -

   - Armour deck: 3.94" / 100 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 32 922 shp / 24 560 Kw = 21.10 kts
   Range 7 000nm at 14.00 kts
   Bunker at max displacement = 2 953 tons

Complement:
   1 082 - 1 407

Cost:
   £6.063 million / $24.251 million

Distribution of weights at normal displacement:
   Armament: 1 820 tons, 6.5 %
   Armour: 9 533 tons, 34.0 %
      - Belts: 3 312 tons, 11.8 %
      - Torpedo bulkhead: 667 tons, 2.4 %
      - Armament: 1 828 tons, 6.5 %
      - Armour Deck: 3 460 tons, 12.3 %
      - Conning Tower: 266 tons, 0.9 %
   Machinery: 1 151 tons, 4.1 %
   Hull, fittings & equipment: 12 046 tons, 43.0 %
   Fuel, ammunition & stores: 3 021 tons, 10.8 %
   Miscellaneous weights: 450 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     42 146 lbs / 19 117 Kg = 18.6 x 16.5 " / 420 mm shells or 7.9 torpedoes
   Stability (Unstable if below 1.00): 1.20
   Metacentric height 7.8 ft / 2.4 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.38
   Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.515
   Length to Beam Ratio: 6.00 : 1
   'Natural speed' for length: 25.49 kts
   Power going to wave formation at top speed: 39 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   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:      26.25 ft / 8.00 m
      - Forecastle (19 %):   19.69 ft / 6.00 m
      - Mid (33 %):      16.40 ft / 5.00 m
      - Quarterdeck (18 %):   16.40 ft / 5.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   17.76 ft / 5.41 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80.8 %
      - Above water (accommodation/working, high = better): 140.2 %
   Waterplane Area: 47 509 Square feet or 4 414 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 197 lbs/sq ft or 964 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.39
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Tanthalas]

heya Jef the only problm I see with your pockets (and thats only if you are trying to be like the German Panzershifes) while you can definetly kill cruisers, and some older BBs what would you do against one of the new 9X16" or 10X16" that have just as good of protection and can run around at 25 knots.  Thats the problem I ran into with my pocket BB Program with Italia.

my advice would be adopt 20 knots top speed as your standard (no real reason to go faster as your area of operations is rather limited), heavy armor (match your armor thickness to your gun bore), adopt 1.10, 1.25, and .75 as requirements. 

Just some advice and like all advice (solicited or otherwise) its free and can be Ignored. :)

Tans

[Jefgte]

The interrest of that pBB is to have very big guns, Probably able to kill a new 16" BB.
So , with 24.000t or 25.000t, it is possible to built 2 kind of BB in 1920
4T3x340 or 2T3x420

Same protection, speed, range...

What is better for a 25.000t BB in 1920 to engage 16" BB ?
12x340 or 6x420


Jef  ;)

[Tanthalas]

The interrest of that pBB is to have very big guns, Probably able to kill a new 16" BB.
So , with 24.000t or 25.000t, it is possible to built 2 kind of BB in 1920
4T3x340 or 2T3x420

Same protection, speed, range...

What is better for a 25.000t BB in 1920 to engage 16" BB ?
12x340 or 6x420


Jef  ;)

Honestly id go for 2 15K  ton BBs 20 knot (so you keep the engine weight down) and proly 6X16.  Ill see what I can work up when I finish playing with my BC idea

[Borys]

IMO 12x340 is better.
Borys