Krążownik minowy typu Neptun 1925 (1 szt.)

Krążownik minowy typu Neptun 1925 (1 szt.)

Kolejny w naszej flocie krążownik minowy. Wprawdzie z zasady do kolonii wysyłam starsze jednostki, ale z uwagi na większą prędkość i zasięg, tym razem Neptun powędruje na Belitung, a nie starszy Posejdon. Oczywiście w razie konfliktu poza Bałtykiem, Posejdon także zostanie wysłany do kolonii.

Prezentowany okręt jest dość szybką jednostką o sporym zasięgu. Uzbrojenie jest wystarczające dla jednostki tej klasy i wielkości. Opancerzenie jest wprawdzie symboliczne, ale daje przewagę w starciu z lżejszymi okrętami wroga. Mimo znacznej prędkości, Neptun wykazuje się zupełnie przyzwoitymi właściwościami morskimi. Wszystkie tory minowe znajdują się wewnątrz kadłuba, co daje pewien komfort obsłudze.

Neptun, Poland Minelaying cruiser laid down 1925

Displacement:

            4 735 t light; 4 891 t standard; 5 296 t normal; 5 621 t full load

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

            (495,65 ft / 492,13 ft) x 49,54 ft x (16,90 / 17,60 ft)

            (151,08 m / 150,00 m) x 15,10 m  x (5,15 / 5,36 m)

Armament:

      4 - 5,98" / 152 mm 50,0 cal guns - 100,09lbs / 45,40kg shells, 150 per gun

              Quick firing guns in turret on barbette mounts, 1925 Model

              2 x Twin mounts on centreline ends, evenly spread

      2 - 4,13" / 105 mm 50,0 cal guns - 33,29lbs / 15,10kg shells, 300 per gun

              Dual purpose guns in deck and hoist mount, 1920 Model

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

      4 - 1,57" / 40,0 mm 60,0 cal guns - 2,05lbs / 0,93kg shells, 600 per gun

              Anti-air guns in deck mounts, 1919 Model

              2 x Twin mounts on centreline ends, evenly spread 2 raised mounts

      5 - 0,98" / 25,0 mm 60,0 cal guns - 0,55lbs / 0,25kg shells, 1 500 per gun

              Anti-air guns in deck mounts, 1919 Model

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

              1 x Single mount on centreline, aft deck centre 1 raised mount

      Weight of broadside 477 lbs / 216 kg

      Mines

      2 - 1 212,54 lbs / 550,00 kg mines + 380 reloads - 206,782 t total

            in Above water - Stern racks/rails

Armour:

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

            Main:   1,97" / 50 mm 314,96 ft / 96,00 m     4,27 ft / 1,30 m

            Ends:   Unarmoured

            Upper: 1,97" / 50 mm 144,36 ft / 44,00 m     7,87 ft / 2,40 m

              Main Belt covers 98% of normal length

              Main belt does not fully cover magazines and engineering spaces

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

            Main:   1,97" / 50 mm 0,98" / 25 mm             1,97" / 50 mm

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

   - Armoured deck - single deck:

            For and Aft decks: 0,98" / 25 mm

   - Conning towers: Forward 1,97" / 50 mm, Aft 0,98" / 25 mm

Machinery:

            Oil fired boilers, steam turbines,

            Geared drive, 2 shafts, 51 587 shp / 38 484 Kw = 32,00 kts

            Range 8 000nm at 11,00 kts

            Bunker at max displacement = 730 tons

Complement:

            309 - 403

Cost:

            £1,495 million / $5,981 million

Distribution of weights at normal displacement:

            Armament: 396 tons, 7,5%

               - Guns: 138 tons, 2,6%

               - Weapons: 258 tons, 4,9%

            Armour: 530 tons, 10,0%

               - Belts: 217 tons, 4,1%

               - Armament: 56 tons, 1,1%

               - Armour Deck: 237 tons, 4,5%

               - Conning Towers: 19 tons, 0,4%

            Machinery: 1 675 tons, 31,6%

            Hull, fittings & equipment: 2 134 tons, 40,3%

            Fuel, ammunition & stores: 561 tons, 10,6%

            Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:

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

              5 751 lbs / 2 609 Kg = 53,7 x 6,0 " / 152 mm shells or 1,0 torpedoes

            Stability (Unstable if below 1.00): 1,14

            Metacentric height 2,2 ft / 0,7 m

            Roll period: 14,0 seconds

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

                                   - Recoil effect (Restricted arc if above 1.00): 0,28

            Seaboat quality  (Average = 1.00): 1,21

Hull form characteristics:

            Hull has a flush deck,

              a normal bow and large transom stern

            Block coefficient (normal/deep): 0,450 / 0,458

            Length to Beam Ratio: 9,93 : 1

            'Natural speed' for length: 25,49 kts

            Power going to wave formation at top speed: 59 %

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

            Bow angle (Positive = bow angles forward): 10,00 degrees

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

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

                                               Fore end,        Aft end

               - Forecastle:            18,00%,  20,01 ft / 6,10 m,  18,37 ft / 5,60 m

               - Forward deck:       32,00%,  18,37 ft / 5,60 m,  18,37 ft / 5,60 m

               - Aft deck:    32,00%,  18,37 ft / 5,60 m,  18,37 ft / 5,60 m

               - Quarter deck:        18,00%,  18,37 ft / 5,60 m,  18,37 ft / 5,60 m

               - Average freeboard:                      18,49 ft / 5,64 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 112,7%

                        - Above water (accommodation/working, high = better): 183,0%

            Waterplane Area: 16 154 Square feet or 1 501 Square metres

            Displacement factor (Displacement / loading): 120%

            Structure weight / hull surface area: 80 lbs/sq ft or 391 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 0,92

                        - Longitudinal: 1,95

                        - Overall: 1,00

            Cramped 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