MS Export For Tokkaido

Titus class, Tokkaido Minelayer/ Sweeper laid down 1905

Displacement:

               407 t light; 420 t standard; 480 t normal; 529 t full load

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

               (164,55 ft / 160,00 ft) x 26,00 ft x (8,00 / 8,63 ft)

               (50,15 m / 48,77 m) x 7,92 m  x (2,44 / 2,63 m)

Armament:

     1 - 4,00" / 102 mm 45,0 cal gun - 32,27lbs / 14,64kg shells, 180 per gun

                 Quick firing gun in deck mount, 1905 Model

                 1 x Single mount on centreline, forward deck forward

     4 - 0,26" / 6,5 mm 30,0 cal guns - 0,01lbs / 0,00kg shells, 3.000 per gun

                 Machine guns in deck mounts, 1905 Model

                 4 x Single mounts on sides, evenly spread

     Weight of broadside 32 lbs / 15 kg

     Mines

     3 - 440,92 lbs / 200,00 kg mines + 140 reloads - 28,148 t total

               in Above water - Stern racks/rails

Armour:

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

               Main:      1,00" / 25 mm          50,00 ft / 15,24 m              14,00 ft / 4,27 m

               Ends:      Unarmoured

                 Main Belt covers 48 % of normal length

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

               Main:      1,00" / 25 mm              -                                             -

               2nd:        0,50" / 13 mm              -                                             -

  - Armoured deck - single deck:

               For and Aft decks: 1,00" / 25 mm

  - Conning towers: Forward 1,00" / 25 mm, Aft 0,00" / 0 mm

Machinery:

               Oil fired boilers, complex reciprocating steam engines,

               Direct drive, 1 shaft, 465 ihp / 347 Kw = 12,00 kts

               Range 4.000nm at 10,00 kts

               Bunker at max displacement = 109 tons

Complement:

               50 - 66

Cost:

               £0,024 million / $0,098 million

Distribution of weights at normal displacement:

               Armament: 41 tons, 8,5 %

                  - Guns: 6 tons, 1,2 %

                  - Weapons: 35 tons, 7,3 %

               Armour: 89 tons, 18,5 %

                  - Belts: 38 tons, 7,8 %

                  - Armament: 9 tons, 1,9 %

                  - Armour Deck: 41 tons, 8,5 %

                  - Conning Tower: 1 tons, 0,3 %

               Machinery: 61 tons, 12,8 %

               Hull, fittings & equipment: 196 tons, 40,8 %

               Fuel, ammunition & stores: 73 tons, 15,3 %

               Miscellaneous weights: 20 tons, 4,2 %

                  - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:

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

                 1.811 lbs / 821 Kg = 56,6 x 4,0 " / 102 mm shells or 1,3 torpedoes

               Stability (Unstable if below 1.00): 1,17

               Metacentric height 0,9 ft / 0,3 m

               Roll period: 11,6 seconds

               Steadiness             - As gun platform (Average = 50 %): 100 %

                                              - Recoil effect (Restricted arc if above 1.00): 0,13

               Seaboat quality (Average = 1.00): 2,00

Hull form characteristics:

               Hull has a flush deck,

                 a normal bow and a round stern

               Block coefficient (normal/deep): 0,505 / 0,515

               Length to Beam Ratio: 6,15 : 1

               'Natural speed' for length: 12,65 kts

               Power going to wave formation at top speed: 43 %

               Trim (Max stability = 0, Max steadiness = 100): 50

               Bow angle (Positive = bow angles forward): 18,00 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 %,  14,00 ft / 4,27 m,  14,00 ft / 4,27 m

                  - Forward deck: 30,00 %,  14,00 ft / 4,27 m,  14,00 ft / 4,27 m

                  - Aft deck:          35,00 %,  14,00 ft / 4,27 m,  14,00 ft / 4,27 m

                  - Quarter deck:  15,00 %,  14,00 ft / 4,27 m,  14,00 ft / 4,27 m

                  - Average freeboard:                        14,00 ft / 4,27 m

Ship space, strength and comments:

               Space      - Hull below water (magazines/engines, low = better): 46,3 %

                              - Above water (accommodation/working, high = better): 142,9 %

               Waterplane Area: 2.679 Square feet or 249 Square metres

               Displacement factor (Displacement / loading): 195 %

               Structure weight / hull surface area: 32 lbs/sq ft or 154 Kg/sq metre

               Hull strength (Relative):

                              - Cross-sectional: 0,75

                              - Longitudinal: 12,83

                              - Overall: 1,00

               Excellent machinery, storage, compartmentation space

               Excellent accommodation and workspace room

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

               Excellent seaboat, comfortable, can fire her guns in the heaviest weather

mine sweeping gear10 tons