County-Class Light Cruiser

[ledeper]

Improved County-Class, BCS Ligth Cruiser laid down 1913 (Engine 1912)

Displacement:
   5.819 t light; 6.036 t standard; 6.700 t normal; 7.231 t full load

Dimensions: Length overall / water x beam x draught
   512,00 ft / 508,53 ft x 49,21 ft x 21,33 ft (normal load)
   156,06 m / 155,00 m x 15,00 m  x 6,50 m

Armament:
      8 - 5,91" / 150 mm guns (4x2 guns), 102,98lbs / 46,71kg shells, 1913 Model
     Quick firing guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1913 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1913 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 954 lbs / 433 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,98" / 25 mm      0,98" / 25 mm

   - Armour deck: 1,97" / 50 mm, Conning tower: 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 59.106 shp / 44.093 Kw = 30,90 kts
   Range 5.000nm at 14,00 kts
   Bunker at max displacement = 1.195 tons

Complement:
   369 - 481

Cost:
   £0,691 million / $2,765 million

Distribution of weights at normal displacement:
   Armament: 119 tons, 1,8 %
   Armour: 692 tons, 10,3 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 71 tons, 1,1 %
      - Armour Deck: 576 tons, 8,6 %
      - Conning Tower: 45 tons, 0,7 %
   Machinery: 2.357 tons, 35,2 %
   Hull, fittings & equipment: 2.401 tons, 35,8 %
   Fuel, ammunition & stores: 881 tons, 13,1 %
   Miscellaneous weights: 250 tons, 3,7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4.405 lbs / 1.998 Kg = 42,8 x 5,9 " / 150 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,22
   Metacentric height 2,5 ft / 0,8 m
   Roll period: 13,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 52 %
         - Recoil effect (Restricted arc if above 1.00): 0,38
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,439
   Length to Beam Ratio: 10,33 : 1
   'Natural speed' for length: 22,55 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19,69 ft / 6,00 m
      - Forecastle (20 %):   15,78 ft / 4,81 m
      - Mid (50 %):      15,78 ft / 4,81 m
      - Quarterdeck (15 %):   15,78 ft / 4,81 m
      - Stern:      15,78 ft / 4,81 m
      - Average freeboard:   16,09 ft / 4,91 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 131,8 %
      - Above water (accommodation/working, high = better): 118,5 %
   Waterplane Area: 15.828 Square feet or 1.471 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 87 lbs/sq ft or 426 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,51
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate

[miketr]

You used BB/AC tech, turret and barbettes for the main gun.  Mount and Hoist is the correct layout of a PC/CL.

Michael

[ledeper]

you are right my oversight, rectified below:
Improved County-Class, BCS Ligth Cruiser laid down 1913 (Engine 1912)

Displacement:
   5.786 t light; 6.001 t standard; 6.664 t normal; 7.193 t full load

Dimensions: Length overall / water x beam x draught
   512,00 ft / 508,53 ft x 49,21 ft x 21,33 ft (normal load)
   156,06 m / 155,00 m x 15,00 m  x 6,50 m

Armament:
      8 - 5,91" / 150 mm guns (4x2 guns), 102,98lbs / 46,71kg shells, 1913 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1913 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1913 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 954 lbs / 433 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,98" / 25 mm      0,98" / 25 mm

   - Armour deck: 1,97" / 50 mm, Conning tower: 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 59.617 shp / 44.474 Kw = 31,00 kts
   Range 5.000nm at 14,00 kts
   Bunker at max displacement = 1.192 tons

Complement:
   368 - 479

Cost:
   £0,693 million / $2,773 million

Distribution of weights at normal displacement:
   Armament: 119 tons, 1,8 %
   Armour: 655 tons, 9,8 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 35 tons, 0,5 %
      - Armour Deck: 575 tons, 8,6 %
      - Conning Tower: 45 tons, 0,7 %
   Machinery: 2.377 tons, 35,7 %
   Hull, fittings & equipment: 2.384 tons, 35,8 %
   Fuel, ammunition & stores: 878 tons, 13,2 %
   Miscellaneous weights: 250 tons, 3,8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4.317 lbs / 1.958 Kg = 41,9 x 5,9 " / 150 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,24
   Metacentric height 2,6 ft / 0,8 m
   Roll period: 12,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 53 %
         - Recoil effect (Restricted arc if above 1.00): 0,37
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,437
   Length to Beam Ratio: 10,33 : 1
   'Natural speed' for length: 22,55 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19,69 ft / 6,00 m
      - Forecastle (20 %):   15,78 ft / 4,81 m
      - Mid (50 %):      15,78 ft / 4,81 m
      - Quarterdeck (15 %):   15,78 ft / 4,81 m
      - Stern:      15,78 ft / 4,81 m
      - Average freeboard:   16,09 ft / 4,91 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 133,5 %
      - Above water (accommodation/working, high = better): 118,6 %
   Waterplane Area: 15.799 Square feet or 1.468 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 87 lbs/sq ft or 424 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,54
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate

[miketr]

No belt armor?

Michael

[ledeper]

Sorry SS tweak (It does it sometimes,don't know why) ??? ???
Improved County-Class, BCS Ligth Cruiser laid down 1913 (Engine 1912)

Displacement:
   6.605 t light; 6.838 t standard; 7.548 t normal; 8.116 t full load

Dimensions: Length overall / water x beam x draught
   511,42 ft / 508,53 ft x 49,21 ft x 21,33 ft (normal load)
   155,88 m / 155,00 m x 15,00 m  x 6,50 m

Armament:
      8 - 5,91" / 150 mm guns (4x2 guns), 102,98lbs / 46,71kg shells, 1913 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1913 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1913 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 954 lbs / 433 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5,91" / 150 mm   379,76 ft / 115,75 m   8,43 ft / 2,57 m
   Ends:   Unarmoured
   Upper:   1,97" / 50 mm   330,54 ft / 100,75 m   8,01 ft / 2,44 m
     Main Belt covers 115 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,98" / 25 mm      0,98" / 25 mm

   - Armour deck: 1,97" / 50 mm, Conning tower: 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 54.056 shp / 40.325 Kw = 29,50 kts
   Range 5.000nm at 14,00 kts
   Bunker at max displacement = 1.278 tons

Complement:
   404 - 526

Cost:
   £0,691 million / $2,762 million

Distribution of weights at normal displacement:
   Armament: 119 tons, 1,6 %
   Armour: 1.673 tons, 22,2 %
      - Belts: 984 tons, 13,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 35 tons, 0,5 %
      - Armour Deck: 604 tons, 8,0 %
      - Conning Tower: 49 tons, 0,6 %
   Machinery: 2.155 tons, 28,6 %
   Hull, fittings & equipment: 2.408 tons, 31,9 %
   Fuel, ammunition & stores: 943 tons, 12,5 %
   Miscellaneous weights: 250 tons, 3,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6.926 lbs / 3.142 Kg = 67,3 x 5,9 " / 150 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,19
   Metacentric height 2,4 ft / 0,7 m
   Roll period: 13,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 52 %
         - Recoil effect (Restricted arc if above 1.00): 0,38
   Seaboat quality  (Average = 1.00): 1,05

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,495
   Length to Beam Ratio: 10,33 : 1
   'Natural speed' for length: 22,55 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,40 ft / 5,00 m
      - Forecastle (20 %):   15,78 ft / 4,81 m
      - Mid (50 %):      15,78 ft / 4,81 m
      - Quarterdeck (15 %):   15,78 ft / 4,81 m
      - Stern:      15,78 ft / 4,81 m
      - Average freeboard:   15,83 ft / 4,83 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108,7 %
      - Above water (accommodation/working, high = better): 113,5 %
   Waterplane Area: 16.599 Square feet or 1.542 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 85 lbs/sq ft or 415 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,97
      - Longitudinal: 1,38
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate

[miketr]

The 150mm belt is impressive but at the same time isn't it over kill?  Wouldn't something in the 75mm to 100mm be a better selection for a PC?

Michael 

[ledeper]

It is in line with my philosophy of high survivability of my Navy a bit in line with the H.S.F in OTL,better/higher protection and a slighty lower speed ,also these ships should hopefully last 20 years.