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Main Archive => NLogi => New Ships => Topic started by: miketr on March 19, 2015, 06:00:28 PM

Title: looking for a AC Design
Post by: miketr on March 19, 2015, 06:00:28 PM
11,000 light tons displacement
210 or 240mm main guns
Speed 22 knots VTE
Title: Re: looking for a AC Design
Post by: Logi on March 19, 2015, 07:55:26 PM
Here's a quick one:

QuoteAsama for Germans, Japan Heavy Cruiser laid down 1902 (Engine 1900)

Displacement:
   11,000 t light; 11,475 t standard; 12,424 t normal; 13,183 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (492.13 ft / 492.13 ft) x 54.13 ft x (29.53 / 30.95 ft)
   (150.00 m / 150.00 m) x 16.50 m  x (9.00 / 9.43 m)

Armament:
      4 - 9.45" / 240 mm 45.0 cal guns - 425.39lbs / 192.95kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1902 Model
     2 x Twin mounts on centreline, evenly spread
      12 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 150 per gun
     Quick firing guns in casemate mounts, 1902 Model
     12 x Single mounts on sides, evenly spread
      12 - 3.46" / 88.0 mm 45.0 cal guns - 20.97lbs / 9.51kg shells, 200 per gun
     Quick firing guns in deck mounts, 1902 Model
     12 x Single mounts on sides, evenly spread
      4 - 0.31" / 8.0 mm 45.0 cal guns - 0.02lbs / 0.01kg shells, 400 per gun
     Machine guns in deck mounts, 1902 Model
     4 x Quad mounts on sides, evenly spread
      40 - 0.43" / 11.0 mm 35.0 cal guns - 0.04lbs / 0.02kg shells, 800 per gun
     Breech loading guns in deck mounts, 1902 Model
     4 x 2 row decuple mounts on sides, evenly spread
      Weight of broadside 3,201 lbs / 1,452 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   10.8" / 275 mm   374.02 ft / 114.00 m   9.84 ft / 3.00 m
   Ends:   2.95" / 75 mm   118.11 ft / 36.00 m   9.84 ft / 3.00 m
   Upper:   2.95" / 75 mm   374.02 ft / 114.00 m   9.84 ft / 3.00 m
     Main Belt covers 117 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   10.8" / 275 mm   3.94" / 100 mm      6.89" / 175 mm
   2nd:   2.95" / 75 mm   1.97" / 50 mm      1.97" / 50 mm
   3rd:   0.39" / 10 mm         -               -
   4th:   0.20" / 5 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 10.83" / 275 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 3 shafts, 24,432 ihp / 18,226 Kw = 22.00 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,708 tons (90% coal)

Complement:
   587 - 764

Cost:
   £1.145 million / $4.580 million

Distribution of weights at normal displacement:
   Armament: 639 tons, 5.1 %
      - Guns: 639 tons, 5.1 %
   Armour: 3,441 tons, 27.7 %
      - Belts: 2,181 tons, 17.6 %
      - Armament: 451 tons, 3.6 %
      - Armour Deck: 684 tons, 5.5 %
      - Conning Tower: 125 tons, 1.0 %
   Machinery: 3,780 tons, 30.4 %
   Hull, fittings & equipment: 2,980 tons, 24.0 %
   Fuel, ammunition & stores: 1,425 tons, 11.5 %
   Miscellaneous weights: 160 tons, 1.3 %
      - Hull above water: 60 tons
      - On freeboard deck: 50 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,211 lbs / 3,724 Kg = 19.5 x 9.4 " / 240 mm shells or 1.1 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 2.5 ft / 0.8 m
   Roll period: 14.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.76
   Seaboat quality  (Average = 1.00): 1.56

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.553 / 0.560
   Length to Beam Ratio: 9.09 : 1
   'Natural speed' for length: 22.18 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 45
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   20.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.40 ft / 5.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 116.7 %
      - Above water (accommodation/working, high = better): 99.2 %
   Waterplane Area: 18,641 Square feet or 1,732 Square metres
   Displacement factor (Displacement / loading): 93 %
   Structure weight / hull surface area: 101 lbs/sq ft or 493 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.78
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Title: Re: looking for a AC Design
Post by: Walter on March 19, 2015, 09:16:01 PM
Just throwing some stuff together...

Roon, Germany Armored Cruiser laid down 1902 (Engine 1900)

Displacement:
   10,983 t light; 11,410 t standard; 12,553 t normal; 13,468 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (446.78 ft / 442.91 ft) x 65.62 ft x (26.25 / 27.79 ft)
   (136.18 m / 135.00 m) x 20.00 m  x (8.00 / 8.47 m)

Armament:
      4 - 8.27" / 210 mm 45.0 cal guns - 284.98lbs / 129.26kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1902 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 140 per gun
     Breech loading guns in turret on barbette mounts, 1902 Model
     4 x Single mounts on sides, forward evenly spread
      6 - 5.91" / 150 mm 45.0 cal guns - 103.86lbs / 47.11kg shells, 140 per gun
     Quick firing guns in casemate mounts, 1902 Model
     6 x Single mounts on sides, forward evenly spread
      6 hull mounts in casemates- Limited use in heavy seas
      8 - 3.46" / 88.0 mm 45.0 cal guns - 20.97lbs / 9.51kg shells, 200 per gun
     Quick firing guns in deck mounts, 1902 Model
     8 x Single mounts on side ends, evenly spread
      6 - 3.46" / 88.0 mm 45.0 cal guns - 20.97lbs / 9.51kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1902 Model
     4 x Single mounts on sides, forward deck forward
     2 x Single mounts on sides, aft deck aft
      2 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 2,472 lbs / 1,121 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   344.49 ft / 105.00 m   9.84 ft / 3.00 m
   Ends:   3.15" / 80 mm     98.43 ft / 30.00 m   9.84 ft / 3.00 m
   Upper:   3.94" / 100 mm   314.96 ft / 96.00 m   9.84 ft / 3.00 m
     Main Belt covers 120% of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.91" / 150 mm   2.36" / 60 mm      6.69" / 170 mm
   2nd:   3.94" / 100 mm   1.57" / 40 mm      2.36" / 60 mm
   3rd:   3.94" / 100 mm   1.97" / 50 mm      1.97" / 50 mm
   4th:   0.79" / 20 mm         -               -
   5th:   1.18" / 30 mm   1.18" / 30 mm      1.18" / 30 mm

   - Armoured deck - multiple decks:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 5.91" / 150 mm, Aft 3.15" / 80 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 3 shafts, 26,292 ihp / 19,614 Kw = 22.00 kts
   Range 5,000nm at 12.00 kts
   Bunker at max displacement = 2,057 tons (90% coal)

Complement:
   592 - 770

Cost:
   £1.144 million / $4.575 million

Distribution of weights at normal displacement:
   Armament: 534 tons, 4.3%
      - Guns: 534 tons, 4.3%
   Armour: 2,926 tons, 23.3%
      - Belts: 1,463 tons, 11.7%
      - Armament: 492 tons, 3.9%
      - Armour Deck: 865 tons, 6.9%
      - Conning Towers: 105 tons, 0.8%
   Machinery: 4,068 tons, 32.4%
   Hull, fittings & equipment: 3,285 tons, 26.2%
   Fuel, ammunition & stores: 1,571 tons, 12.5%
   Miscellaneous weights: 170 tons, 1.4%
      - Hull below water: 20 tons
      - On freeboard deck: 150 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,543 lbs / 4,782 Kg = 37.3 x 8.3 " / 210 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.36
   Seaboat quality  (Average = 1.00): 1.75

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.576 / 0.584
   Length to Beam Ratio: 6.75 : 1
   'Natural speed' for length: 21.05 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   Bow angle (Positive = bow angles forward): -3.00 degrees
   Stern overhang: -8.73 ft / -2.66 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17.11%,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Forward deck:   58.55%,  22.97 ft / 7.00 m,  22.97 ft / 7.00 m
      - Aft deck:   9.43%,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   14.91%,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      21.37 ft / 6.51 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 119.5%
      - Above water (accommodation/working, high = better): 147.5%
   Waterplane Area: 20,783 Square feet or 1,931 Square metres
   Displacement factor (Displacement / loading): 96%
   Structure weight / hull surface area: 106 lbs/sq ft or 516 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.51
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Upper belt is 30x3m above 66x3m, similar as on this pic of SMS Roon...
(http://upload.wikimedia.org/wikipedia/commons/8/83/Roon_linedrawing.png)
Title: Re: looking for a AC Design
Post by: Tanthalas on March 20, 2015, 08:41:44 AM
The Dutch Proposal, reworking possible and well it is 22 knots =P (although there isnt much room for changes)

Scharnhorst, Germany Armoured Cruiser laid down 1903 (Engine 1900)

Displacement:
   11,000 t light; 11,491 t standard; 13,031 t normal; 14,263 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (464.00 ft / 464.00 ft) x 64.00 ft x (27.00 / 29.04 ft)
   (141.43 m / 141.43 m) x 19.51 m  x (8.23 / 8.85 m)

Armament:
      6 - 9.45" / 240 mm 40.0 cal guns - 404.25lbs / 183.37kg shells, 90 per gun
     Breech loading guns in turret on barbette mounts, 1903 Model
     2 x Twin mounts on centreline ends, evenly spread
     1 x Twin mount on centreline, aft deck forward
      8 - 5.90" / 150 mm 45.0 cal guns - 103.56lbs / 46.98kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1903 Model
     8 x Single mounts on sides, evenly spread
      8 hull mounts in casemates- Limited use in all but light seas
      8 - 3.90" / 99.1 mm 45.0 cal guns - 29.91lbs / 13.57kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1903 Model
     8 x Single mounts on side ends, evenly spread
      8 hull mounts in casemates- Limited use in all but light seas
      8 - 3.90" / 99.1 mm 45.0 cal guns - 29.91lbs / 13.57kg shells, 150 per gun
     Quick firing guns in deck mounts, 1903 Model
     8 x Single mounts on sides, evenly spread
      8 raised mounts
      Weight of broadside 3,733 lbs / 1,693 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.09" / 180 mm   362.00 ft / 110.34 m   12.00 ft / 3.66 m
   Ends:   3.15" / 80 mm   102.00 ft / 31.09 m   9.00 ft / 2.74 m
   Upper:   3.94" / 100 mm   301.00 ft / 91.74 m   7.00 ft / 2.13 m
     Main Belt covers 120 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   3.94" / 100 mm      5.91" / 150 mm
   2nd:   4.92" / 125 mm         -               -
   3rd:   3.94" / 100 mm         -               -
   4th:   1.18" / 30 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 7.09" / 180 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 3 shafts, 26,175 ihp / 19,527 Kw = 22.00 kts
   Range 10,000nm at 10.00 kts
   Bunker at max displacement = 2,772 tons (90% coal)

Complement:
   609 - 792

Cost:
   £1.216 million / $4.864 million

Distribution of weights at normal displacement:
   Armament: 684 tons, 5.3 %
      - Guns: 684 tons, 5.3 %
   Armour: 3,057 tons, 23.5 %
      - Belts: 1,731 tons, 13.3 %
      - Armament: 546 tons, 4.2 %
      - Armour Deck: 696 tons, 5.3 %
      - Conning Tower: 85 tons, 0.6 %
   Machinery: 4,049 tons, 31.1 %
   Hull, fittings & equipment: 3,137 tons, 24.1 %
   Fuel, ammunition & stores: 2,031 tons, 15.6 %
   Miscellaneous weights: 72 tons, 0.6 %
      - Hull below water: 16 tons
      - Hull above water: 20 tons
      - On freeboard deck: 36 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9,171 lbs / 4,160 Kg = 21.7 x 9.4 " / 240 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.43
   Metacentric height 4.8 ft / 1.5 m
   Roll period: 12.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 61 %
         - Recoil effect (Restricted arc if above 1.00): 0.35
   Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.569 / 0.579
   Length to Beam Ratio: 7.25 : 1
   'Natural speed' for length: 21.54 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Forward deck:   33.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Aft deck:   30.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Quarter deck:   17.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Average freeboard:      15.00 ft / 4.57 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 119.9 %
      - Above water (accommodation/working, high = better): 99.0 %
   Waterplane Area: 21,094 Square feet or 1,960 Square metres
   Displacement factor (Displacement / loading): 95 %
   Structure weight / hull surface area: 107 lbs/sq ft or 524 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.67
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Good seaboat, rides out heavy weather easily

72 tons Misc. weight total
Hull below water: 16 tons
4 tons sides:18" torpedo tubes (one at either end of the Citidel per side)
12 tons: 3 reloads per tube
Hull above water: 20 tons
10 tons: Flag facilities
10 tons: Reserve
On Main deck: 35 tons
10 tons: Flag facilities
26 tons: reserve
Title: Re: looking for a AC Design
Post by: Jefgte on March 20, 2015, 05:08:14 PM
The Dutch proposal is certainly the better.
France could'nt have best proposition.