„Krążownik” podwodny typu Rekin 1926 (1 szt.)

„Krążownik” podwodny typu Rekin 1926 (1 szt.)

Oto owoc dość bogatej dyskusji sprzed kilku miesięcy. Nie ukrywam, że pomijając jego wartość bojową, okręt ten w dużej mierze pełni funkcję prestiżową. W każdym razie w przyszłości dalszych takich kolosów budować nie zamierzam.

Jednostka – stosownie do swej wielkości – posiada silne uzbrojenie torpedowe i artyleryjskie. Prędkość okrętu zarówno na powierzchni, jak i w zanurzeniu, pozwala skutecznie ścigać większość statków handlowych przeciwnika; a olbrzymi zasięg (plus duży zapas torped) pozwala na długotrwałe przebywanie w morzu. Jednostka posiada również zaskakująco dobre – jak na okręt podwodny – właściwości morskie.

Spodziewając się licznych głosów krytyki, rzucam Wam tego Rekina „na pożarcie”

 

Rekin, Poland Submarine laid down 1926

Displacement:

            2 327 t light; 2 391 t standard; 2 932(3 518) t normal; 3 365 t full load

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

            (362,97 ft / 360,89 ft) x 31,50 ft x (21,00 / 23,12 ft)

            (110,63 m / 110,00 m) x 9,60 m  x (6,40 / 7,05 m)

Armament:

      2 - 4,13" / 105 mm 45,0 cal guns - 35,63lbs / 16,16kg shells, 120 per gun

              Dual purpose guns in deck mounts, 1926 Model

              2 x Single mounts on centreline, evenly spread

      2 - 0,98" / 25,0 mm 60,0 cal guns - 0,53lbs / 0,24kg shells, 1 000 per gun

              Anti-air guns in deck mount, 1926 Model

              1 x Twin mount on centreline, aft deck forward 1 raised mount

      Weight of broadside 72 lbs / 33 kg

      Main Torpedoes

      10 - 21,0" / 533 mm, 27,33 ft / 8,33 m torpedoes - 1,758 t each, 17,579 t total

            submerged bow & stern , 10 torpedoes reloads

      2nd Torpedoes

      6 - 21,0" / 533 mm, 27,33 ft / 8,33 m torpedoes - 1,758 t each, 10,548 t total

            In 2 sets of deck mounted centre rotating tubes

Machinery:

            Diesel Internal combustion generators plus batteries,

            Electric motors, 2 shafts, 9 016(3 278) shp / 6 726(2 445) Kw = 21,00(11,00) kts

            Range 20 000(130)nm at 10,00(5,00) kts

            Bunker at max displacement = 974 tons

Complement:

            100

Cost:

            £0,866 million / $3,464 million

Distribution of weights at normal displacement:

            Armament: 70 tons, 2,4%

               - Guns: 14 tons, 0,5%

               - Weapons: 56 tons, 1,9%

            Machinery: 289 tons, 9,8%

            Hull, fittings & equipment: 1 365 tons, 46,5%

            Fuel, ammunition & stores: 605 tons, 20,6%

            Miscellaneous weights: 604 tons, 20,6%

               - Hull below water: 604 tons

Overall survivability and seakeeping ability:

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

              4 188 lbs / 1 900 Kg = 64,5 x 4,1 " / 105 mm shells or 0,8 torpedoes

            Stability (Unstable if below 1.00): 1,22

            Metacentric height 1,3 ft / 0,4 m

            Roll period: 11,7 seconds

            Steadiness      - As gun platform (Average = 50 %): 72 %

                                   - Recoil effect (Restricted arc if above 1.00): 0,05

            Seaboat quality  (Average = 1.00): 1,30

Hull form characteristics:

            Hull has a flush deck,

              a normal bow and a round stern

            Block coefficient (normal/deep): 0,430 / 0,448

            Length to Beam Ratio: 11,46 : 1

            'Natural speed' for length: 19,00 kts

            Power going to wave formation at top speed: 41 %

            Trim (Max stability = 0, Max steadiness = 100): 55

            Bow angle (Positive = bow angles forward): 9,00 degrees

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

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

                                               Fore end,        Aft end

               - Forecastle:            25,00%,  13,12 ft / 4,00 m,  10,50 ft / 3,20 m

               - Forward deck:       25,00%,  10,50 ft / 3,20 m,  10,50 ft / 3,20 m

               - Aft deck:    35,00%,  10,50 ft / 3,20 m,  10,50 ft / 3,20 m

               - Quarter deck:        15,00%,  10,50 ft / 3,20 m,  3,94 ft / 1,20 m

               - Average freeboard:                      10,27 ft / 3,13 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 66,9%

                        - Above water (accommodation/working, high = better): 54,0%

            Waterplane Area: 7 138 Square feet or 663 Square metres

            Displacement factor (Displacement / loading): 241%

            Structure weight / hull surface area: 95 lbs/sq ft or 465 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 1,74

                        - Longitudinal: 2,99

                        - Overall: 1,84

            Excellent machinery, storage, compartmentation space

            Cramped accommodation and workspace room

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

            Good seaboat, rides out heavy weather easily

Operational diving deepth 84 m

Emergency diving deepth 134 m

Crush deepth 210 m

Rekin (1926)