Kuter trałowy typu KT-17 (8 szt.)

Kuter trałowy typu KT-17 (8 szt.)

Okręciki te stanowią niewielkie rozwinięcie typu KT-1. Są nieco większe, mają większy zasięg, a dodatkowo posiadają możność stawiania niewielkiej ilości min.

Mimo niewielkich rozmiarów, ich właściwości morskie są na dość wysokim poziomie. Wynika to głównie (dzień dobry Autorze Springsharpa :)!) z niewielkiej prędkości maksymalnej.

Dwie jednostki tego typu będą bazować w nowo pozyskanej bazie w Świnoujściu, a reszta w koloniach.

 

KT-17, Poland Minesweeping craft laid down 1937

Displacement:

            80 t light; 82 t standard; 86 t normal; 89 t full load

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

            (104,25 ft / 101,71 ft) x 18,37 ft x (4,59 / 4,68 ft)

            (31,77 m / 31,00 m) x 5,60 m  x (1,40 / 1,43 m)

Armament:

      1 - 1,57" / 40,0 mm 60,0 cal gun - 2,14lbs / 0,97kg shells, 600 per gun

              Anti-air gun in deck mount, 1937 Model

              1 x Single mount on centreline, forward deck forward

      1 - 0,51" / 13,0 mm 75,0 cal gun - 0,08lbs / 0,03kg shells, 1 500 per gun

              Machine gun in deck mount, 1937 Model

              1 x Single mount on centreline, forward deck aft

      Weight of broadside 2 lbs / 1 kg

      Mines

      2 - 1 433,01 lbs / 650,00 kg mines + 8 reloads - 6,397 t total

            in Above water - Stern racks/rails

      Main DC/AS Mortars

      2 - 246,92 lbs / 112,00 kg Depth Charges + 16 reloads - 1,984 t total

            in Stern depth charge racks

Machinery:

            Diesel Internal combustion motors,

            Geared drive, 2 shafts, 544 shp / 405 Kw = 14,00 kts

            Range 750nm at 10,00 kts

            Bunker at max displacement = 6 tons

Complement:

            13 - 18

Cost:

            £0,028 million / $0,112 million

Distribution of weights at normal displacement:

            Armament: 11 tons, 13,1%

               - Guns: 1 tons, 0,9%

               - Weapons: 10 tons, 12,2%

            Machinery: 15 tons, 17,6%

            Hull, fittings & equipment: 37 tons, 43,2%

            Fuel, ammunition & stores: 6 tons, 7,0%

            Miscellaneous weights: 16 tons, 19,1%

               - Hull above water: 8 tons

               - On freeboard deck: 8 tons

Overall survivability and seakeeping ability:

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

              241 lbs / 109 Kg = 123,2 x 1,6 " / 40 mm shells or 0,4 torpedoes

            Stability (Unstable if below 1.00): 1,31

            Metacentric height 0,6 ft / 0,2 m

            Roll period: 9,7 seconds

            Steadiness      - As gun platform (Average = 50 %): 74 %

                                   - Recoil effect (Restricted arc if above 1.00): 0,02

            Seaboat quality  (Average = 1.00): 1,35

Hull form characteristics:

            Hull has rise forward of midbreak,

              a normal bow and large transom stern

            Block coefficient (normal/deep): 0,350 / 0,355

            Length to Beam Ratio: 5,54 : 1

            'Natural speed' for length: 12,50 kts

            Power going to wave formation at top speed: 58 %

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

            Bow angle (Positive = bow angles forward): 16,00 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%,  8,86 ft / 2,70 m,  7,87 ft / 2,40 m

               - Forward deck:       35,00%,  7,87 ft / 2,40 m,  7,87 ft / 2,40 m

               - Aft deck:    20,00%,  3,94 ft / 1,20 m,  3,94 ft / 1,20 m

               - Quarter deck:        25,00%,  3,94 ft / 1,20 m,  3,94 ft / 1,20 m

               - Average freeboard:                      6,18 ft / 1,88 m

            Ship tends to be wet forward

Ship space, strength and comments:

            Space - Hull below water (magazines/engines, low = better): 71,0%

                        - Above water (accommodation/working, high = better): 109,4%

            Waterplane Area: 1 159 Square feet or 108 Square metres

            Displacement factor (Displacement / loading): 177%

            Structure weight / hull surface area: 22 lbs/sq ft or 106 Kg/sq metre

            Hull strength (Relative):

                        - Cross-sectional: 0,85

                        - Longitudinal: 4,22

                        - Overall: 1,00

            Excellent machinery, storage, compartmentation space

            Adequate accommodation and workspace room

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

            Good seaboat, rides out heavy weather easily

KT-17 - KT-24 (1937)