C-Class Destroyer

[snip]

Much like the B-Class it succeeded, the C-Class was an update focused on propulsion. The change from VTE to turbines provided great improvement. The torpedo tubes are also replaced with the more powerful 450mm torpedo.

Ten Ships:
--Penant Number 21 to Number 30

C-Class, Imperial Roman Republic Destroyer laid down 1904

Displacement:
   500 t light; 514 t standard; 592 t normal; 655 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (215.45 ft / 213.25 ft) x 22.97 ft x (9.84 / 10.55 ft)
   (65.67 m / 65.00 m) x 7.00 m  x (3.00 / 3.22 m)

Armament:
      1 - 2.95" / 75.0 mm 50.0 cal gun - 13.23lbs / 6.00kg shells, 100 per gun
     Quick firing gun in deck mount, 1902 Model
     1 x Single mount on centreline, aft deck centre
      1 raised mount aft
      6 - 1.77" / 45.0 mm 45.0 cal guns - 3.31lbs / 1.50kg shells, 150 per gun
     Quick firing guns in deck mounts, 1897 Model
     6 x Single mounts on sides, evenly spread
      Weight of broadside 33 lbs / 15 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.59" / 15 mm         -               -
   2nd:   0.59" / 15 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 14,000 shp / 10,444 Kw = 28.21 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 140 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   59 - 78

Cost:
   £0.069 million / $0.274 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 1.1 %
      - Guns: 7 tons, 1.1 %
   Armour: 9 tons, 1.6 %
      - Armament: 9 tons, 1.6 %
   Machinery: 352 tons, 59.5 %
   Hull, fittings & equipment: 116 tons, 19.5 %
   Fuel, ammunition & stores: 92 tons, 15.6 %
   Miscellaneous weights: 16 tons, 2.7 %
      - On freeboard deck: 16 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     103 lbs / 47 Kg = 8.0 x 3.0 " / 75 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 0.52

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.430 / 0.443
   Length to Beam Ratio: 9.29 : 1
   'Natural speed' for length: 14.60 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 96
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Forward deck:   30.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Aft deck:   35.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Quarter deck:   15.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Average freeboard:      8.20 ft / 2.50 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 194.7 %
      - Above water (accommodation/working, high = better): 81.4 %
   Waterplane Area: 3,075 Square feet or 286 Square metres
   Displacement factor (Displacement / loading): 21 %
   Structure weight / hull surface area: 22 lbs/sq ft or 105 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.27
      - Overall: 0.55
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Caution: Lacks seaworthiness - very limited seakeeping ability

Misc Distribution
--On Deck (16t)
----8t 4x450mm Torpedos [Two single tube mounts per side]
----5t Improved spray protections for Torpedo tubes
----3t Construction Reserve.

[snip]

In 1913, all 10 ships of this class were updated with modern firecontrol systems and given 530mm torpedo tubes.

C-Class, Imperial Roman Republic Destroyer laid down 1904 (1913 Refit)

Displacement:
   500 t light; 514 t standard; 592 t normal; 655 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (215.45 ft / 213.25 ft) x 22.97 ft x (9.84 / 10.55 ft)
   (65.67 m / 65.00 m) x 7.00 m  x (3.00 / 3.22 m)

Armament:
      1 - 2.95" / 75.0 mm 50.0 cal gun - 13.23lbs / 6.00kg shells, 100 per gun
     Quick firing gun in deck mount, 1902 Model
     1 x Single mount on centreline, aft deck centre
      1 raised mount aft
      6 - 1.77" / 45.0 mm 45.0 cal guns - 3.31lbs / 1.50kg shells, 150 per gun
     Quick firing guns in deck mounts, 1897 Model
     6 x Single mounts on sides, evenly spread
      Weight of broadside 33 lbs / 15 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.59" / 15 mm         -               -
   2nd:   0.59" / 15 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 14,000 shp / 10,444 Kw = 28.21 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 140 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   59 - 78

Cost:
   £0.069 million / $0.274 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 1.1 %
      - Guns: 7 tons, 1.1 %
   Armour: 9 tons, 1.6 %
      - Armament: 9 tons, 1.6 %
   Machinery: 352 tons, 59.5 %
   Hull, fittings & equipment: 116 tons, 19.5 %
   Fuel, ammunition & stores: 92 tons, 15.6 %
   Miscellaneous weights: 16 tons, 2.7 %
      - On freeboard deck: 16 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     103 lbs / 47 Kg = 8.0 x 3.0 " / 75 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 0.52

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.430 / 0.443
   Length to Beam Ratio: 9.29 : 1
   'Natural speed' for length: 14.60 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 96
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Forward deck:   30.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Aft deck:   35.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Quarter deck:   15.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Average freeboard:      8.20 ft / 2.50 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 194.7 %
      - Above water (accommodation/working, high = better): 81.4 %
   Waterplane Area: 3,075 Square feet or 286 Square metres
   Displacement factor (Displacement / loading): 21 %
   Structure weight / hull surface area: 22 lbs/sq ft or 105 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.27
      - Overall: 0.55
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Caution: Lacks seaworthiness - very limited seakeeping ability

Misc Distribution
--On Deck (16t)
--1t 1912 Fire Control
--12t 4x530mm Torpedos [Two single tube mounts per side]
--3t Construction Reserve