Patrol Boats

[TexanCowboy]

Sent by Gran Columbia as a gift of sorts. Will be found protecting the Kings Palace.

PB-48 Class

Improvements on the PB-01 class - primarily with respect to speed and operating radius.  Again, intended for riverine use and coastal/harbour patrol.

Kingsguard, Romania(ex-Gran Columbia) Patrol Boat laid down 1916(Engine 1916)

Displacement:
  38 t light; 39 t standard; 42 t normal; 45 t full load

Dimensions: Length overall / water x beam x draught
  79.69 ft / 78.74 ft x 11.48 ft x 3.28 ft (normal load)
  24.29 m / 24.00 m x 3.50 m  x 1.00 m

Armament:
     1 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1950 Model
    Quick firing gun in deck mount
    on centreline forward
     3 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1950 Model
    Breech loading guns in deck mounts
    on side, all amidships
  Weight of broadside 3 lbs / 1 kg
  Shells per gun, main battery: 250

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
  Main:   0.98" / 25 mm         -               -
  2nd:   0.39" / 10 mm         -               -

  - Conning tower: 0.98" / 25 mm

Machinery:
  Coal fired boilers, steam turbines,
  Direct drive, 2 shafts, 300 shp / 224 Kw = 14.55 kts
  Range 700nm at 10.00 kts (Bunkerage = 5 tons)

Complement:
  7 - 10

Cost:
  £0.027 million / $0.106 million

Distribution of weights at normal displacement:
  Armament: 0 tons, 0.9 %
  Armour: 1 tons, 2.9 %
     - Belts: 0 tons, 0.0 %
     - Torpedo bulkhead: 0 tons, 0.0 %
     - Armament: 1 tons, 2.3 %
     - Armour Deck: 0 tons, 0.0 %
     - Conning Tower: 0 tons, 0.6 %
  Machinery: 12 tons, 29.0 %
  Hull, fittings & equipment: 18 tons, 43.0 %
  Fuel, ammunition & stores: 4 tons, 10.1 %
  Miscellaneous weights: 6 tons, 14.2 %

Overall survivability and seakeeping ability:
  Survivability (Non-critical penetrating hits needed to sink ship):
    52 lbs / 24 Kg = 16.4 x 1.9 " / 47 mm shells or 0.1 torpedoes
  Stability (Unstable if below 1.00): 1.11
  Metacentric height 0.2 ft / 0.1 m
  Roll period: 9.9 seconds
  Steadiness   - As gun platform (Average = 50 %): 50 %
        - Recoil effect (Restricted arc if above 1.00): 0.09
  Seaboat quality  (Average = 1.00): 1.11

Hull form characteristics:
  Hull has a flush deck
  Block coefficient: 0.500
  Length to Beam Ratio: 6.86 : 1
  'Natural speed' for length: 8.87 kts
  Power going to wave formation at top speed: 68 %
  Trim (Max stability = 0, Max steadiness = 100): 45
  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:      5.41 ft / 1.65 m
     - Forecastle (20 %):   5.41 ft / 1.65 m
     - Mid (50 %):      5.41 ft / 1.65 m
     - Quarterdeck (15 %):   5.41 ft / 1.65 m
     - Stern:      5.41 ft / 1.65 m
     - Average freeboard:   5.41 ft / 1.65 m
  Ship tends to be wet forward

Ship space, strength and comments:
  Space   - Hull below water (magazines/engines, low = better): 117.3 %
     - Above water (accommodation/working, high = better): 88.7 %
  Waterplane Area: 602 Square feet or 56 Square metres
  Displacement factor (Displacement / loading): 121 %
  Structure weight / hull surface area: 15 lbs/sq ft or 74 Kg/sq metre
  Hull strength (Relative):
     - Cross-sectional: 0.81
     - Longitudinal: 7.05
     - Overall: 1.00
  Hull space for machinery, storage, compartmentation is cramped
  Room for accommodation and workspaces is cramped