Battleships for Peru

[The Rock Doctor]

When has that minor detail ever stopped the NeoSwiss?

[Jefgte]

 With taller beam & more secondary guns


2T3x340-1907, Peru BB laid down 1907 (Engine 1908)

Displacement:
   14 000 t light; 14 769 t standard; 15 684 t normal; 16 416 t full load

Dimensions: Length overall / water x beam x draught
   524.93 ft / 524.93 ft x 80.71 ft x 22.53 ft (normal load)
   160.00 m / 160.00 m x 24.60 m  x 6.87 m

Armament:
      6 - 13.39" / 340 mm guns (2x3 guns), 1 199.24lbs / 543.97kg shells, 1907 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, 1907 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, 1907 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 8 006 lbs / 3 632 kg
   Shells per gun, main battery: 100
   4 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   347.77 ft / 106.00 m   10.17 ft / 3.10 m
   Ends:   2.00" / 51 mm   164.04 ft / 50.00 m   10.17 ft / 3.10 m
     13.12 ft / 4.00 m Unarmoured ends
   Upper:   2.00" / 51 mm   347.77 ft / 106.00 m   8.01 ft / 2.44 m
     Main Belt covers 102 % of normal length

   - Torpedo Bulkhead:
      1.38" / 35 mm   347.77 ft / 106.00 m   22.34 ft / 6.81 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   3.94" / 100 mm      11.0" / 280 mm
   2nd:   2.00" / 51 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, 3 shafts, 22 714 shp / 16 945 Kw = 20.66 kts
   Range 7 000nm at 10.00 kts
   Bunker at max displacement = 1 647 tons

Complement:
   699 - 910

Cost:
   £1.491 million / $5.965 million

Distribution of weights at normal displacement:
   Armament: 1 001 tons, 6.4 %
   Armour: 5 372 tons, 34.3 %
      - Belts: 2 179 tons, 13.9 %
      - Torpedo bulkhead: 396 tons, 2.5 %
      - Armament: 995 tons, 6.3 %
      - Armour Deck: 1 653 tons, 10.5 %
      - Conning Tower: 149 tons, 0.9 %
   Machinery: 1 147 tons, 7.3 %
   Hull, fittings & equipment: 6 180 tons, 39.4 %
   Fuel, ammunition & stores: 1 684 tons, 10.7 %
   Miscellaneous weights: 300 tons, 1.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19 991 lbs / 9 068 Kg = 16.7 x 13.4 " / 340 mm shells or 3.7 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 4.9 ft / 1.5 m
   Roll period: 15.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.53
   Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.575
   Length to Beam Ratio: 6.50 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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:      21.98 ft / 6.70 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:   15.25 ft / 4.65 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101.9 %
      - Above water (accommodation/working, high = better): 120.4 %
   Waterplane Area: 30 269 Square feet or 2 812 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 153 lbs/sq ft or 745 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

[Borys]

Now a nice armadillo :)

Borys

[P3D]

Looking at the ship again, I'd go for 6:1 length-to-beam ratio and a BC of 0.6 or higher. Length is needed neither for speed, nor for deck space.

[Jefgte]

Length-to-beam ratio is 6.5 to 1



Jef  ;)

[Sachmle]

Nice ship...I'm jealous, my first 14k BBs were, well, I don't have any 14k BBs, I have a 12.7k BB... but anyway, engine year should still be 1909, as P3D stated. The newer engine may free up some weight, though not much, and a shorter ship on the same weight should take a better beating.

[Jefgte]

Testing a 3D drawing of Cuzco & Lima class (10500T).
They are typicaly Pre-Dreadnought.





Jef  ;)

[Sachmle]

WOW!! :D

[The Rock Doctor]

Nice!

[Desertfox]

STUNNED...

Now if only I had the time... I have access at school to a 3D printer, so if I had 3D drawings I could actually print out a complete model of the ships! I just have to find some time. Im already paying enough money to the school, better get something out of it!

[Borys]

Ooooooooooooooo Ahhhhhhhhhhhhhhhhhhhhhhhh Ooohhhhhhhhhhhhhhhhhhhhhhhhhhhh

[Korpen]

Testing a 3D drawing of Cuzco & Lima class (10500T).
They are typicaly Pre-Dreadnought.
Jef  ;)

Showoff! ;)

[Jefgte]

18000T-4T2x340, Peru BB laid down 1911

Displacement:
   18 000 t light; 19 029 t standard; 20 383 t normal; 21 467 t full load

Dimensions: Length overall / water x beam x draught
   551.18 ft / 551.18 ft x 85.30 ft x 24.63 ft (normal load)
   168.00 m / 168.00 m x 26.00 m  x 7.51 m

Armament:
      4 - 13.39" / 340 mm guns (2x2 guns), 1 200.00lbs / 544.31kg shells, 1911 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      4 - 13.39" / 340 mm guns (2x2 guns), 1 200.00lbs / 544.31kg shells, 1911 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, 1911 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      16 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1911 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, 1911 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 10 589 lbs / 4 803 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   341.21 ft / 104.00 m   10.17 ft / 3.10 m
   Ends:   4.02" / 102 mm   190.29 ft / 58.00 m   10.17 ft / 3.10 m
     19.69 ft / 6.00 m Unarmoured ends
   Upper:   4.02" / 102 mm   341.21 ft / 104.00 m   8.01 ft / 2.44 m
     Main Belt covers 95 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   341.21 ft / 104.00 m   24.51 ft / 7.47 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: 3.54" / 90 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 29 000 shp / 21 634 Kw = 21.13 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 2 438 tons

Complement:
   852 - 1 108

Cost:
   £1.906 million / $7.624 million

Distribution of weights at normal displacement:
   Armament: 1 323 tons, 6.5 %
   Armour: 7 463 tons, 36.6 %
      - Belts: 2 829 tons, 13.9 %
      - Torpedo bulkhead: 487 tons, 2.4 %
      - Armament: 1 644 tons, 8.1 %
      - Armour Deck: 2 288 tons, 11.2 %
      - Conning Tower: 215 tons, 1.1 %
   Machinery: 1 177 tons, 5.8 %
   Hull, fittings & equipment: 7 637 tons, 37.5 %
   Fuel, ammunition & stores: 2 384 tons, 11.7 %
   Miscellaneous weights: 400 tons, 2.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     24 963 lbs / 11 323 Kg = 20.8 x 13.4 " / 340 mm shells or 4.5 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.8 ft / 1.5 m
   Roll period: 16.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.57
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.616
   Length to Beam Ratio: 6.46 : 1
   'Natural speed' for length: 23.48 kts
   Power going to wave formation at top speed: 45 %
   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:      20.67 ft / 6.30 m
      - Forecastle (18 %):   16.40 ft / 5.00 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:   14.97 ft / 4.56 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 94.9 %
      - Above water (accommodation/working, high = better): 111.8 %
   Waterplane Area: 34 904 Square feet or 3 243 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 165 lbs/sq ft or 807 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.26
      - 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

---------------------------------
study drawing in progress




Jef  ;)

[Sachmle]

Where ya gonna put the 16 90mm guns? The only places left are where the conning tower/bridge goes on the fore superstructure, where the aft tower goes, and on top of the turrets. And I don't think 4 90mm guns will fit on a 34cm turret roof.

[Jefgte]

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  ;)