Okręt podwodny typu Mustel 1928-1929 (3 szt.)

Okręt podwodny typu Mustel 1928-1929 (3 szt.)

Duży, oceaniczny okręt podwodny przeznaczony do działań na dalekich akwenach. Po zakończeniu prac nad rozbudową bazy Beniowski, cały dywizjon zostanie skierowany do Namibii.

Jednostka jest dobrze uzbrojona (8 wyrzutni + 8 zapasowych) oraz posiada prędkości i zasięg odpowiednie do stawianych przed nią zadań. Na bardzo dobrym poziomie są również projektowe głębokości zanurzenia.

Jako pewną ciekawostkę, wyjątkowo pokazuję przekrój poprzeczny kadłuba okrętu na wysokości peryskopu bojowego (pierwszy od dziobu). Zazwyczaj przekrój taki sporządzam w celach wyłącznie roboczych, dla kontroli kształtów kadłuba na „oficjalnych” widokach.

Mustel, Poland Submarine laid down 1928

Displacement:

            1 054 t light; 1 081 t standard; 1 230(1476) t normal; 1 349 t full load

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

            (266,51 ft / 262,47 ft) x 23,62 ft x (16,73 / 17,81 ft)

            (81,23 m / 80,00 m) x 7,20 m  x (5,10 / 5,43 m)

Armament:

      1 - 4,13" / 105 mm 45,0 cal gun - 33,29lbs / 15,10kg shells, 120 per gun

              Dual purpose gun in deck mount, 1921 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, 480 per gun

              Anti-air guns in deck mount, 1919 Model

              1 x Twin mount on centreline, forward deck aft

                        1 raised mount

      Weight of broadside 34 lbs / 16 kg

      Main Torpedoes

      6 - 21,0" / 533 mm, 27,33 ft / 8,33 m torpedoes - 1,766 t each, 10,596 t total

            submerged bow tubes + 6 reloads

      2nd Torpedoes

      2 - 21,0" / 533 mm, 27,33 ft / 8,33 m torpedoes - 1,766 t each, 3,532 t total

            submerged stern tubes + 2 reloads

Machinery:

            Diesel Internal combustion generators plus batteries,

            Electric motors, 2 shafts, 3 978(1446) shp / 2 967(1079) Kw = 19,00(9,5) kts

            Range 10 500(110)nm at 10,0(5,0) kts

            Bunker at max displacement = 268 tons

Complement:

            52

Cost:

            £0,428 million / $1,712 million

Distribution of weights at normal displacement:

            Armament: 35 tons, 3,0%

               - Guns: 7 tons, 0,6%

               - Weapons: 29 tons, 2,4%

            Machinery: 124 tons, 10,1%

            Hull, fittings & equipment: 634 tons, 51,5%

            Fuel, ammunition & stores: 176 tons, 14,3%

            Miscellaneous weights: 260 tons, 21,2%

               - Hull below water: 14 tons

               - Hull void weights: 246 tons

Overall survivability and seakeeping ability:

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

              2 165 lbs / 982 Kg = 29,9 x 4,1 " / 105 mm shells or 0,3 torpedoes

            Stability (Unstable if below 1.00): 1,17

            Metacentric height 0,8 ft / 0,2 m

            Roll period: 11,3 seconds

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

                                   - Recoil effect (Restricted arc if above 1.00): 0,06

            Seaboat quality  (Average = 1.00): 1,17

Hull form characteristics:

            Hull has a flush deck,

              a normal bow and a round stern

            Block coefficient (normal/deep): 0,415 / 0,428

            Length to Beam Ratio: 11,11 : 1

            'Natural speed' for length: 16,20 kts

            Power going to wave formation at top speed: 43 %

            Trim (Max stability = 0, Max steadiness = 100): 60

            Bow angle (Positive = bow angles forward): 23,00 degrees

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

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

                                               Fore end,        Aft end

               - Forecastle:            20,00%,  9,51 ft / 2,90 m,  7,87 ft / 2,40 m

               - Forward deck:       30,00%,  7,87 ft / 2,40 m,  7,87 ft / 2,40 m

               - Aft deck:    30,00%,  7,87 ft / 2,40 m,  7,87 ft / 2,40 m

               - Quarter deck:        20,00%,  7,87 ft / 2,40 m,  0,49 ft / 0,15 m

               - Average freeboard:                      7,27 ft / 2,22 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 52,3%

                        - Above water (accommodation/working, high = better): 56,1%

            Waterplane Area: 3 852 Square feet or 358 Square metres

            Displacement factor (Displacement / loading): 234%

            Structure weight / hull surface area: 81 lbs/sq ft or 395 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 1,92

                        - Longitudinal: 3,69

                        - Overall: 2,05

            Excellent machinery, storage, compartmentation space

            Cramped accommodation and workspace room

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

Operational diving depth - 85 m

Emergency diving depth - 136 m

Crush depth - 213 m

Mustel (1928)

Kolcoskór (1928)

Piłonos (1929)