Nowe okręty podwodne

Oto nowy, długo (jak sądzę) wyczekiwany okręt podwodny. Jednostka ta wprowadza  ważną nowinkę w naszej flocie, a mianowicie napęd silnikami diesla do pływania nawodnego, co wkrótce stanie się standardem dla okrętów podwodnych.  Okręt wypiera ponad 100 ton więcej niż poprzednik, co przekłada się na silniejsze uzbrojenie (3 wyrzutnie torped, w tym 2 dziobowe i jedna rufowa) oraz znacznie większy zasięg (2200 mil morskich). Osiągi w pływaniu podwodnym (prędkość, zasięg, głębokość zanurzenia) pozostały na z grubsza niezmienionym poziomie i nie odstają znacząco od odpowiedników równolegle budowanych za granicą (np. brytyjskiego typu D).

Tuńczyk, polish submarine laid down 1909

Displacement:

                336 t light; 343 t standard; 366 t normal; 384 t full load, 439 t submerged

Dimensions: Length overall / water x beam x draught

                160,56 ft / 160,56 ft x 18,86 ft x 10,01 ft (normal load)

                48,94 m / 48,94 m x 5,75 m  x 3,05 m

                3 - 18,0" / 457 mm submerged torpedo tubes

Machinery:

                Diesel Internal combustion generators plus batteries,

                Electric motors, 1 shaft, 886 shp / 661 Kw = 15,00 kts (400 hp / 299 Kw = 8,50 kts)

                Range 2 200nm at 9,00 kts (45nm at 5,00 kts)

                Bunker at max displacement = 41 tons

Complement:

                21

Cost:

                £0,017 million / $0,070 million

Distribution of weights at normal displacement:

                Armament: 0 tons, 0,0%

                Machinery: 40 tons, 11,0%

                Hull, fittings & equipment: 180 tons, 49,1%

                Fuel, ammunition & stores: 30 tons, 8,2%

                Miscellaneous weights: 116 tons, 31,7%

Overall survivability and seakeeping ability:

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

                  150 lbs / 68 Kg = 1,4 x 6 " / 152 mm shells or 0,3 torpedoes

                Stability (Unstable if below 1.00): 1,00

                Metacentric height 0,4 ft / 0,1 m

                Roll period: 12,4 seconds

                Steadiness           - As gun platform (Average = 50 %): 0 %

                                               - Recoil effect (Restricted arc if above 1.00): 0,00

                Seaboat quality  (Average = 1.00): 0,00

Hull form characteristics:

                Hull has a flush deck

                Block coefficient: 0,423

                Length to Beam Ratio: 8,51 : 1

                'Natural speed' for length: 12,67 kts

                Power going to wave formation at top speed: 48 %

                Trim (Max stability = 0, Max steadiness = 100): 41

                Bow angle (Positive = bow angles forward): 0,00 degrees

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

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

                   - Stem:                               0,00 ft / 0,00 m

                   - Forecastle (20%):          0,00 ft / 0,00 m

                   - Mid (50%):                      0,00 ft / 0,00 m

                   - Quarterdeck (15%):      0,00 ft / 0,00 m

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

                   - Average freeboard:       0,00 ft / 0,00 m

                Ship tends to be wet forward

Ship space, strength and comments:

                Space    - Hull below water (magazines/engines, low = better): 110,2%

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

                Waterplane Area: 1 795 Square feet or 167 Square metres

                Displacement factor (Displacement / loading): 186%

                Structure weight / hull surface area: 69 lbs/sq ft or 339 Kg/sq metre

                Hull strength (Relative):

                               - Cross-sectional: 2,90

                               - Longitudinal: 1,59

                               - Overall: 1,85

                Hull space for machinery, storage, compartmentation is adequate

                Room for accommodation and workspaces is extremely poor

                Ship has quick, lively roll, not a steady gun platform

                Caution: Lacks seaworthiness - very limited seakeeping ability

Operational depth:  93 ft / 28 m

Emergency Depth: 149 ft / 45 m

Crush depth: 233 ft / 71 m

Tuńczyk (1909)

Orka (1909)

Wegorz (1910)

Sum (1910)

Okoń (1911)