Ścigacz artyleryjski typu Dingo

Ścigacz artyleryjski typu Dingo 1920-1921 (2 szt.)

A oto zapowiadany wcześniej ścigacz artyleryjski. Okręcik posiada taki sam kadłub i jednostkę napędową jak ścigacz torpedowy, różni się od niego brakiem uzbrojenia torpedowego i większym kalibrem działka na dziobie.

Zadaniem jednostki jest wsparcie własnych ścigaczy torpedowych i zwalczanie ścigaczy nieprzyjaciela.

Uwagi co do prędkości i właściwości morskich; jak w przypadku ścigacza torpedowego.

Dingo, Poland Motor gun boat laid down 1920

Displacement:

            39 t light; 41 t standard; 43 t normal; 44 t full load

Dimensions: Length overall / water x beam x draught

            74,31 ft / 73,82 ft x 16,40 ft x 4,10 ft (normal load)

            22,65 m / 22,50 m x 5,00 m  x 1,25 m

Armament:

      1 - 2,24" / 57,0 mm guns in single mounts, 5,67lbs / 2,57kg shells, 1919 Model

              Anti-aircraft gun in deck mount on centreline forward

      1 - 0,98" / 25,0 mm guns in single mounts, 0,55lbs / 0,25kg shells, 1919 Model

              Anti-aircraft gun in deck mount on centreline aft

            Weight of broadside 6 lbs / 3 kg

            Shells per gun, main battery: 250

Machinery:

            Petrol Internal combustion motors,

            Geared drive, 2 shafts, 3530 shp / 2640 Kw = 33 kts

            Range 450nm at 22,00 kts

            Bunker at max displacement = 9 tons

Complement:

            7 - 10

Cost:

            £0,009 million / $0,035 million

Distribution of weights at normal displacement:

            Armament: 1 tons, 1,8%

            Machinery: 12 tons, 29,0%

            Hull, fittings & equipment: 25 tons, 59,7%

            Fuel, ammunition & stores: 4 tons, 9,5%

            Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:

            Survivability (Non-critical penetrating hits needed to sink ship):

              71 lbs / 32 Kg = 12,5 x 2,2 " / 57 mm shells or 0,2 torpedoes

            Stability (Unstable if below 1.00): 1,01

            Metacentric height 0,3 ft / 0,1 m

            Roll period: 11,8 seconds

            Steadiness      - As gun platform (Average = 50 %): 53 %

                                   - Recoil effect (Restricted arc if above 1.00): 0,07

            Seaboat quality  (Average = 1.00): 0,68

Hull form characteristics:

            Hull has raised forecastle

              and transom stern

            Block coefficient: 0,300

            Length to Beam Ratio: 4,50 : 1

            'Natural speed' for length: 11,08 kts

            Power going to wave formation at top speed: 73 %

            Trim (Max stability = 0, Max steadiness = 100): 78

            Bow angle (Positive = bow angles forward): 4,50 degrees

            Stern overhang: 0,00 ft / 0,00 m

            Freeboard (% = measuring location as a percentage of overall length):

               - Stem:                    6,23 ft / 1,90 m

               - Forecastle (40%): 6,23 ft / 1,90 m (5,74 ft / 1,75 m aft of break)

               - Mid (0%):              5,74 ft / 1,75 m

               - Quarterdeck (0%):            5,74 ft / 1,75 m

               - Stern:                    5,74 ft / 1,75 m

               - Average freeboard:          5,94 ft / 1,81 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 111,7%

                        - Above water (accommodation/working, high = better): 126,3%

            Waterplane Area: 809 Square feet or 75 Square metres

            Displacement factor (Displacement / loading): 138%

            Structure weight / hull surface area: 22 lbs/sq ft or 105 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 0,88

                        - Longitudinal: 10,20

                        - Overall: 1,12

            Hull space for machinery, storage, compartmentation is cramped

            Room for accommodation and workspaces is excellent

            Caution: Lacks seaworthiness - very limited seakeeping ability

Dingo (1920)

Jenot (1921)