A Modern Clipper

[Desertfox]

My own version of a fast transport ship. This one would be military, the liners are purely civilian.


NSS Flying Cloud, New Switzerland Fast Dispatch Cruiser laid down 1907 (Engine 1909)

Displacement:
   3,902 t light; 4,077 t standard; 7,119 t normal; 9,553 t full load

Dimensions: Length overall / water x beam x draught
   470.00 ft / 470.00 ft x 47.00 ft x 24.00 ft (normal load)
   143.26 m / 143.26 m x 14.33 m  x 7.32 m

Armament:
      2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1907 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1907 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      4 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1907 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 352 lbs / 160 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:   1.00" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 33,040 shp / 24,648 Kw = 27.00 kts
   Range 9,110nm at 20.00 kts
   Bunker at max displacement = 5,476 tons

Complement:
   386 - 503

Cost:
   £0.384 million / $1.535 million

Distribution of weights at normal displacement:
   Armament: 44 tons, 0.6 %
   Armour: 7 tons, 0.1 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 7 tons, 0.1 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1,502 tons, 21.1 %
   Hull, fittings & equipment: 1,859 tons, 26.1 %
   Fuel, ammunition & stores: 3,217 tons, 45.2 %
   Miscellaneous weights: 490 tons, 6.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9,533 lbs / 4,324 Kg = 88.3 x 6.0 " / 152 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.42
   Metacentric height 3.0 ft / 0.9 m
   Roll period: 11.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has a flush deck
     and transom stern
   Block coefficient: 0.470
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 24.83 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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:      17.00 ft / 5.18 m
      - Forecastle (20 %):   14.00 ft / 4.27 m
      - Mid (50 %):      14.00 ft / 4.27 m
      - Quarterdeck (15 %):   14.00 ft / 4.27 m
      - Stern:      14.00 ft / 4.27 m
      - Average freeboard:   14.24 ft / 4.34 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 81.5 %
      - Above water (accommodation/working, high = better): 93.5 %
   Waterplane Area: 14,892 Square feet or 1,384 Square metres
   Displacement factor (Displacement / loading): 185 %
   Structure weight / hull surface area: 72 lbs/sq ft or 352 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.47
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily