Założenia do projektu pancernika typu Władysław Łokietek (BB-4 1923)

Założenia do projektu pancernika typu Władysław Łokietek (BB-4 1923)

Niedawno miała miejsce na blogu dyskusja na temat charakterystyki planowanego pancernika.

W związku z tym – choć z pewnym opóźnieniem – prezentuję aktualne założenia tego projektu w formie raportu Springsharpa. Uprzedzam, że z uwagi na fakt, iż budowa pancernika jest już mocno zaawansowana, istotne zmiany - nawet dobrze uzasadnione – nie będą już możliwe.

Władysław Łokietek, Poland Battleship laid down 1923

Displacement:

            28 292 t light; 30 352 t standard; 32 797 t normal; 34 752 t full load

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

            (717,84 ft / 715,22 ft) x 95,14 ft x (29,86 / 31,28 ft)

            (218,80 m / 218,00 m) x 29,00 m  x (9,10 / 9,53 m)

Armament:

      8 - 15,98" / 406 mm 45,0 cal guns - 2 239,90lbs / 1 016,00kg shells, 120 per gun

              Breech loading guns in turret on barbette mounts, 1921 Model

              4 x Twin mounts on centreline ends, evenly spread

      16 - 4,72" / 120 mm 50,0 cal guns - 52,91lbs / 24,00kg shells, 360 per gun

              Dual purpose guns in deck and hoist mounts, 1920 Model

              8 x Twin mounts on sides, evenly spread 4 raised mounts

      16 - 1,57" / 40,0 mm 60,0 cal guns - 2,05lbs / 0,93kg shells, 1 440 per gun

              Anti-air guns in deck mounts, 1919 Model

              4 x Quad mounts on sides, evenly spread 4 raised mounts

      16 - 0,98" / 25,0 mm 60,0 cal guns - 0,55lbs / 0,25kg shells, 2 880 per gun

              Anti-air guns in deck mounts, 1919 Model

  8 x Twin mounts on sides, evenly spread 8 raised mounts

      Weight of broadside 18 807 lbs / 8 531 kg

Armour:

   - Belts:                     Width (max)    Length (avg)               Height (avg)

            Main:   12,8" / 325 mm           429,79 ft / 131,00 m   7,22 ft / 2,20 m

            Ends:   Unarmoured

            Upper: 8,86" / 225 mm           216,54 ft / 66,00 m     7,87 ft / 2,40 m

              Main Belt covers 92% of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:

                        8,86" / 225 mm           429,79 ft / 131,00 m   19,03 ft / 5,80 m

            Beam between torpedo bulkheads 85,30 ft / 26,00 m

   - Gun armour:         Face (max)     Other gunhouse (avg)            Barbette/hoist (max)

            Main:   13,8" / 350 mm           5,91" / 150 mm                      11,8" / 300 mm

            2nd:     0,98" / 25 mm       -                                  -

   - Armoured deck - multiple decks:

            For and Aft decks: 4,92" / 125 mm

   - Conning towers: Forward 13,78" / 350 mm, Aft 6,89" / 175 mm

Machinery:

            Oil fired boilers, steam turbines,

            Geared drive, 4 shafts, 66 071 shp / 49 289 Kw = 25,00 kts

            Range 10 000nm at 14,00 kts

            Bunker at max displacement = 4 400 tons

Complement:

            1 218 - 1 584

Cost:

            £8,534 million / $34,137 million

Distribution of weights at normal displacement:

            Armament: 2 914 tons, 8,9%

               - Guns: 2 914 tons, 8,9%

            Armour: 11 161 tons, 34,0%

               - Belts: 2 497 tons, 7,6%

               - Torpedo bulkhead: 2 681 tons, 8,2%

               - Armament: 2 335 tons, 7,1%

               - Armour Deck: 3 192 tons, 9,7%

               - Conning Towers: 456 tons, 1,4%

            Machinery: 2 208 tons, 6,7%

            Hull, fittings & equipment: 12 010 tons, 36,6%

            Fuel, ammunition & stores: 4 505 tons, 13,7%

            Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:

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

              47 437 lbs / 21 517 Kg = 23,2 x 16,0 " / 406 mm shells or 8,8 torpedoes

            Stability (Unstable if below 1.00): 1,16

            Metacentric height 6,1 ft / 1,9 m

            Roll period: 16,1 seconds

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

                                   - Recoil effect (Restricted arc if above 1.00): 0,88

            Seaboat quality  (Average = 1.00): 1,32

Hull form characteristics:

            Hull has low quarterdeck ,

              a normal bow and a round stern

            Block coefficient (normal/deep): 0,565 / 0,571

            Length to Beam Ratio: 7,52 : 1

            'Natural speed' for length: 26,74 kts

            Power going to wave formation at top speed: 44 %

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

            Bow angle (Positive = bow angles forward): 6,50 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%,  22,97 ft / 7,00 m,  20,01 ft / 6,10 m

               - Forward deck:       40,00%,  20,01 ft / 6,10 m,  20,01 ft / 6,10 m

               - Aft deck:    15,00%,  20,01 ft / 6,10 m,  20,01 ft / 6,10 m

               - Quarter deck:        25,00%,  12,14 ft / 3,70 m,  13,12 ft / 4,00 m

               - Average freeboard:                      18,40 ft / 5,61 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 76,5%

                        - Above water (accommodation/working, high = better): 150,7%

            Waterplane Area: 48 164 Square feet or 4 475 Square metres

            Displacement factor (Displacement / loading): 105%

            Structure weight / hull surface area: 195 lbs/sq ft or 951 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 0,98

                        - Longitudinal: 1,27

                        - Overall: 1,00

            Excellent machinery, storage, compartmentation space

            Excellent accommodation and workspace room

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

            Good seaboat, rides out heavy weather easily

Po wykonaniu rysunku, niektóre parametry mogą ulec drobnym zmianom.

W porównaniu ze swoimi odpowiednikami (USS Colorado i IJN Nagato), okręt sytuuje się „pośrodku” Np.: uzbrojenie główne ma identyczne w stosunku do obydwu; jest trochę wolniejszy od Nagato, ale znacznie szybszy od Colorado; opancerzenie ma troszkę lepsze niż Nagato, ale słabsze niż Colorado; no i oczywiście uzbrojenie plot posiada silniejsze od obydwu. Ogólnie wartość jednostki jest porównywalna z ww. odpowiednikami, a okręt może stanowić wartościowy składnik floty aż do lat 40-tych tego wieku.

Zapraszam Kolegów do dyskusji.