Trałowce typu Hunt

Dziś kolejne małe, użyteczne okręciki, którymi są trałowce typu Hunt :) Do naszej floty działającej na zachodzie pozyskaliśmy 4 jednostki tego typu, należące do grupy Belvoir, w wariancie uzbrojonym w 1 działo 102 mm, 1 – 76 mm i 2 plotki 40 mm. Okręty te po wojnie mogą położyć nieocenione zasługi w rozminowywaniu Bałtyku.  Jako jednostki wojennej budowy, bojowo nie posłużą raczej długo, zatem potem będzie można pomyśleć o jakimś innym ich wykorzystaniu, np. w charakterze jednostek pomocniczych (np. tendry/okręty-bazy dla jakichś „drobnoustrojów”, okręty doświadczalne, małe transportowce itp.).

Szpak, polish minesweeper laid down 1917

Displacement:
    691 t light; 712 t standard; 750 t normal; 780 t full load

Dimensions: Length overall / water x beam x draught
    231,00 ft / 226,02 ft x 28,02 ft x 6,99 ft (normal load)
    70,41 m / 68,89 m x 8,54 m  x 2,13 m

Armament:
      1 - 4,02" / 102 mm guns in single mounts, 32,38lbs / 14,69kg shells, 1904 Model
      Quick firing gun in deck mount
      on centreline forward
      1 - 2,99" / 76,0 mm guns in single mounts, 13,39lbs / 6,07kg shells, 1893 Model
      Quick firing gun in deck mount
      on centreline aft
      2 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1914 Model
      Anti-aircraft guns in deck mounts
      on side, all amidships, all raised mounts - superfiring
    Weight of broadside 50 lbs / 23 kg
    Shells per gun, main battery: 200

Machinery:
    Coal fired boilers, complex reciprocating steam engines,
    Direct drive, 2 shafts, 1 699 ihp / 1 267 Kw = 16,00 kts
    Range 1 500nm at 10,00 kts
    Bunker at max displacement = 68 tons (100% coal)

Complement:
    71 - 93

Cost:
    £0,082 million / $0,326 million

Distribution of weights at normal displacement:
    Armament: 6 tons, 0,8%
    Machinery: 111 tons, 14,8%
    Hull, fittings & equipment: 574 tons, 76,6%
    Fuel, ammunition & stores: 59 tons, 7,9%
    Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      1 952 lbs / 886 Kg = 60,3 x 4,0 " / 102 mm shells or 1,1 torpedoes
    Stability (Unstable if below 1.00): 1,10
    Metacentric height 0,9 ft / 0,3 m
    Roll period: 12,5 seconds
    Steadiness    - As gun platform (Average = 50 %): 81 %
            - Recoil effect (Restricted arc if above 1.00): 0,09
    Seaboat quality  (Average = 1.00): 1,63

Hull form characteristics:
    Hull has a flush deck
    Block coefficient: 0,593
    Length to Beam Ratio: 8,07 : 1
    'Natural speed' for length: 15,03 kts
    Power going to wave formation at top speed: 47 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): 0,00 degrees
    Stern overhang: 4,99 ft / 1,52 m
    Freeboard (% = measuring location as a percentage of overall length):
       - Stem:        13,45 ft / 4,10 m
       - Forecastle (14%):    10,43 ft / 3,18 m
       - Mid (50%):        10,01 ft / 3,05 m
       - Quarterdeck (17%):    10,01 ft / 3,05 m
       - Stern:        7,97 ft / 2,43 m
       - Average freeboard:    10,15 ft / 3,09 m
    Ship tends to be wet forward

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 55,8%
        - Above water (accommodation/working, high = better): 124,9%
    Waterplane Area: 4 601 Square feet or 427 Square metres
    Displacement factor (Displacement / loading): 277%
    Structure weight / hull surface area: 80 lbs/sq ft or 392 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 2,08
        - Longitudinal: 4,12
        - Overall: 2,23
    Hull space for machinery, storage, compartmentation is excellent
    Room for accommodation and workspaces is excellent
    Ship has slow, easy roll, a good, steady gun platform
    Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Szpak (1917)
Sójka (1917)
Kruk (1917)
Derkacz (1917)