Ścigacz torpedowy typu ST-37 1935 (16 szt.) i ścigacz artyleryjski typu SA-11 1935 (4 szt.)

Ścigacz torpedowy typu ST-37 1935 (16 szt.) i ścigacz artyleryjski typu SA-11 1935 (4 szt.)

Czwarta generacja ścigaczy torpedowych i artyleryjskich. Główną różnicą w stosunku do poprzednich typów jest inny sposób zabudowy wt na ścigaczach torpedowych. Wyrzutnie te mają możliwość ponownego załadowania w warunkach bojowych, przewożonymi na pokładzie torpedami zapasowymi.

Nowością jest też wyposażenie prezentowanych jednostek w wytwornice sztucznego dymu do tworzenia zasłony dymnej. Zamierzam urządzenie to montować również na innych okrętach, przede wszystkim torpedowcach i niszczycielach. Wytwornice takie mogą okazać się bardzo przydatne, szczególnie w przypadku okrętów o napędzie spalinowym, gdzie nie ma możliwości uzyskania naturalnego dymu o odpowiedniej objętości i gęstości.

Jeden dywizjon (1 SA i 4 ST) będzie stacjonować na Bałtyku, dwa na Antylach, a jeden na Pembie.

Ewentualne następne generacje nie będą się zbytnio różnić od tej; w każdym razie wyporność nie przekroczy 100 tn, a uzbrojenie raczej nie ulegnie zmianie. Ponieważ jednostki tej generacji przedstawiają typ dużego, „pełnomorskiego” ścigacza, planuję w przyszłości budowę mniejszych, typowo przybrzeżnych ścigaczy o wyporności ok. 30-40 tn, być może z wyrzutniami kalibru 457 mm. Będzie to osobna linia rozwojowa z własną numeracją generacji.

Ścigacz torpedowy.

ST-37, Poland Motor torpedo boat laid down 1935

Displacement:

            83 t light; 86 t standard; 93 t normal; 100 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)

            (126,65 ft / 124,67 ft) x 20,51 ft x (4,27 / 4,41 ft)

            (38,60 m / 38,00 m) x 6,25 m  x (1,30 / 1,34 m)

Armament:

      3 - 0,98" / 25,0 mm 60,0 cal guns - 0,55lbs / 0,25kg shells, 750 per gun

              Anti-air guns in deck mounts, 1933 Model

              1 x Single mount on centreline, forward deck forward

              1 x Twin mount on centreline, aft deck aft

      Weight of broadside 2 lbs / 1 kg

      Main Torpedoes

      2 - 21,0" / 533 mm, 27,33 ft / 8,33 m torpedoes - 1,794 t each, 3,588 t total

            in 2 sets of deck mounted reloads + 2 torpedoes reloads

Machinery:

            Petrol Internal combustion motors,

            Geared drive, 3 shafts, 6 450 shp / 973 Kw = 40,00 kts

            Range 850nm at 13,00 kts

            Bunker at max displacement = 28 tons

Complement:

            14 - 19

Cost:

            £0,042 million / $0,169 million

Distribution of weights at normal displacement:

            Armament: 5 tons, 5,3%

               - Guns: 0 tons, 0,5%

               - Weapons: 4 tons, 4,8%

            Machinery: 37 tons, 39,6%

            Hull, fittings & equipment: 37 tons, 40,1%

            Fuel, ammunition & stores: 10 tons, 11,2%

            Miscellaneous weights: 4 tons, 3,9%

               - On freeboard deck: 4 tons

Overall survivability and seakeeping ability:

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

              85 lbs / 39 Kg = 178,5 x 1,0 " / 25 mm shells or 0,1 torpedoes

            Stability (Unstable if below 1.00): 1,33

            Metacentric height 0,8 ft / 0,2 m

            Roll period: 9,8 seconds

            Steadiness      - As gun platform (Average = 50 %): 71 %

                                   - Recoil effect (Restricted arc if above 1.00): 0,01

            Seaboat quality  (Average = 1.00): 1,01

Hull form characteristics:

            Hull has raised forecastle,

              a normal bow and large transom stern

            Block coefficient (normal/deep): 0,300 / 0,310

            Length to Beam Ratio: 6,08 : 1

            'Natural speed' for length: 13,87 kts

            Power going to wave formation at top speed: 67 %

            Trim (Max stability = 0, Max steadiness = 100): 70

            Bow angle (Positive = bow angles forward): 11,00 degrees

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

            Freeboard (% = length of deck as a percentage of waterline length):

                                               Fore end,        Aft end

               - Forecastle:            35,00%,  10,17 ft / 3,10 m,  10,17 ft / 3,10 m

               - Forward deck:       25,00%,  6,56 ft / 2,00 m,  6,56 ft / 2,00 m

               - Aft deck:    25,00%,  6,56 ft / 2,00 m,  6,56 ft / 2,00 m

               - Quarter deck:        15,00%,  6,56 ft / 2,00 m,  6,56 ft / 2,00 m

               - Average freeboard:                      7,82 ft / 2,39 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 131,2%

                        - Above water (accommodation/working, high = better): 122,9%

            Waterplane Area: 1 561 Square feet or 145 Square metres

            Displacement factor (Displacement / loading): 117%

            Structure weight / hull surface area: 15 lbs/sq ft or 75 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 0,54

                        - Longitudinal: 3,84

                        - Overall: 0,66

            Cramped machinery, storage, compartmentation space

            Excellent accommodation and workspace room

            Ship has slow, easy roll, a good, steady gun platform

ST-37 - ST-52 (1935)

Ścigacz artyleryjski.

 

SA-11, Poland Motor gun boat laid down 1935

Displacement:

            80 t light; 84 t standard; 93 t normal; 101 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)

            (126,65 ft / 124,67 ft) x 20,51 ft x (4,27 / 4,44 ft)

            (38,60 m / 38,00 m) x 6,25 m  x (1,30 / 1,35 m)

Armament:

      1 - 1,57" / 40,0 mm 60,0 cal gun - 2,05lbs / 0,93kg shells, 500 per gun

              Anti-air gun in deck mount, 1933 Model

              1 x Single mount on centreline, forward deck forward

      2 - 0,98" / 25,0 mm 60,0 cal guns - 0,55lbs / 0,25kg shells, 1 000 per gun

              Anti-air guns in deck mount, 1933 Model

              1 x Twin mount on centreline, aft deck aft

      4 - 0,51" / 13,0 mm 75,0 cal guns - 0,11lbs / 0,05kg shells, 2 000 per gun

              Machine guns in deck mounts, 1925 Model

              2 x Twin mounts on sides, aft deck forward

      Weight of broadside 3 lbs / 2 kg

      Main DC/AS Mortars

      2 - 246,92 lbs / 112,00 kg Depth Charges + 8 reloads - 1,102 t total

            in stern depth charge racks

Machinery:

            Petrol Internal combustion motors,

            Geared drive, 3 shafts, 6 450 shp / 973 Kw = 40,00 kts

            Range 1 050nm at 13,00 kts

            Bunker at max displacement = 34 tons

Complement:

            14 - 19

Cost:

            £0,043 million / $0,172 million

Distribution of weights at normal displacement:

            Armament: 3 tons, 2,9%

               - Guns: 1 tons, 1,4%

               - Weapons: 1 tons, 1,5%

            Machinery: 37 tons, 39,6%

            Hull, fittings & equipment: 41 tons, 43,4%

            Fuel, ammunition & stores: 13 tons, 14,1%

            Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:

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

              88 lbs / 40 Kg = 45,1 x 1,6 " / 40 mm shells or 0,2 torpedoes

            Stability (Unstable if below 1.00): 1,32

            Metacentric height 0,8 ft / 0,2 m

            Roll period: 9,9 seconds

            Steadiness      - As gun platform (Average = 50 %): 70 %

                                   - Recoil effect (Restricted arc if above 1.00): 0,02

            Seaboat quality  (Average = 1.00): 1,00

Hull form characteristics:

            Hull has raised forecastle,

              a normal bow and large transom stern

            Block coefficient (normal/deep): 0,300 / 0,312

            Length to Beam Ratio: 6,08 : 1

            'Natural speed' for length: 13,87 kts

            Power going to wave formation at top speed: 67 %

            Trim (Max stability = 0, Max steadiness = 100): 70

            Bow angle (Positive = bow angles forward): 11,00 degrees

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

            Freeboard (% = length of deck as a percentage of waterline length):

                                               Fore end,        Aft end

               - Forecastle:            35,00%,  10,17 ft / 3,10 m,  10,17 ft / 3,10 m

               - Forward deck:       25,00%,  6,56 ft / 2,00 m,  6,56 ft / 2,00 m

               - Aft deck:    25,00%,  6,56 ft / 2,00 m,  6,56 ft / 2,00 m

               - Quarter deck:        15,00%,  6,56 ft / 2,00 m,  6,56 ft / 2,00 m

               - Average freeboard:                      7,82 ft / 2,39 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 134,4%

                        - Above water (accommodation/working, high = better): 139,4%

            Waterplane Area: 1 561 Square feet or 145 Square metres

            Displacement factor (Displacement / loading): 119%

            Structure weight / hull surface area: 17 lbs/sq ft or 83 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 0,59

                        - Longitudinal: 4,20

                        - Overall: 0,72

            Cramped machinery, storage, compartmentation space

            Excellent accommodation and workspace room

            Ship has slow, easy roll, a good, steady gun platform

SA-11 - SA-14 (1935)