New and Improved PC-1913

[ctwaterman]

Tripoli, Italia Tripoli Class PC Cruiser laid down 1913 (Engine 1912)

Displacement:
   5,881 t light; 6,078 t standard; 6,937 t normal; 7,625 t full load

Dimensions: Length overall / water x beam x draught
   493.00 ft / 493.00 ft x 45.00 ft x 19.69 ft (normal load)
   150.27 m / 150.27 m x 13.72 m  x 6.00 m

Armament:
      8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1913 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      10 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1913 Model
     Breech loading guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      10 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 1,001 lbs / 454 kg
   Shells per gun, main battery: 100
   6 - 20.0" / 508 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.75" / 95 mm   385.75 ft / 117.58 m   12.00 ft / 3.66 m
   Ends:   Unarmoured
     Main Belt covers 120 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -         1.00" / 25 mm
   2nd:   1.00" / 25 mm         -               -
   3rd:   0.50" / 13 mm         -               -

   - Armour deck: 1.00" / 25 mm, Conning tower: 2.00" / 51 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 54,427 shp / 40,603 Kw = 29.71 kts
   Range 5,500nm at 15.00 kts
   Bunker at max displacement = 1,547 tons

Complement:
   379 - 494

Cost:
   £0.671 million / $2.683 million

Distribution of weights at normal displacement:
   Armament: 125 tons, 1.8 %
   Armour: 1,046 tons, 15.1 %
      - Belts: 701 tons, 10.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 41 tons, 0.6 %
      - Armour Deck: 288 tons, 4.2 %
      - Conning Tower: 16 tons, 0.2 %
   Machinery: 2,170 tons, 31.3 %
   Hull, fittings & equipment: 2,309 tons, 33.3 %
   Fuel, ammunition & stores: 1,056 tons, 15.2 %
   Miscellaneous weights: 231 tons, 3.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,448 lbs / 2,471 Kg = 50.4 x 6.0 " / 152 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 13.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.61
   Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.556
   Length to Beam Ratio: 10.96 : 1
   'Natural speed' for length: 22.20 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): -5.00 degrees
   Stern overhang: -9.84 ft / -3.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      27.25 ft / 8.30 m
      - Forecastle (20 %):   20.69 ft / 6.30 m (16.65 ft / 5.07 m aft of break)
      - Mid (60 %):      16.65 ft / 5.07 m
      - Quarterdeck (20 %):   16.65 ft / 5.07 m
      - Stern:      16.65 ft / 5.07 m
      - Average freeboard:   17.98 ft / 5.48 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 118.7 %
      - Above water (accommodation/working, high = better): 108.3 %
   Waterplane Area: 15,570 Square feet or 1,447 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 79 lbs/sq ft or 385 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.87
      - Overall: 1.01
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

100T -  Fire Control
100T - Misc Weight or 100 Mines
6T - 6 Torpedoes
25T -  Wireless

[Sachmle]

- Overall: 1.01

You can cut weight until this is 1.00 even.

Hull space for machinery, storage, compartmentation is cramped

Deepen the draught or widen the hull to help this.