VI. (b) Minensuchen (Mine Search Vessels)

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VI. Minenbooten (Mine Warfare Vessels).
..(b) Minensuchen (Mine-sweepers).
.....SMS M-1

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M-1 class

SMS M-1 - laid down 1907
SMS M-2 - laid down 1909
SMS M-3 - laid down 1909
SMS M-4 - laid down 1909
SMS M-5 - laid down 1909
SMS M-6 - laid down 1910
SMS M-7 - laid down 1910
SMS M-8 - laid down 1910
SMS M-9 - laid down 1910
SMS M-10 - laid down 1911
SMS M-11 - laid down 1911
SMS M-12 - laid down 1911
SMS M-13 - laid down 1911



Brandenburgian Minesuchboot laid down 1907 (Engine 1909)

Displacement:
   358 t light; 369 t standard; 417 t normal; 456 t full load

Dimensions: Length overall / water x beam x draught
   164.86 ft / 164.86 ft x 19.03 ft x 7.02 ft (normal load)
   50.25 m / 50.25 m x 5.80 m  x 2.14 m

Armament:
      1 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1900 Model
     Breech loading gun in deck mount
     on centreline forward
      2 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1907 Model
     Breech loading guns in deck mounts
     on side, all amidships

   Weight of broadside 22 lbs / 10 kg
   Shells per gun, main battery: 150

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:      0.79" / 20 mm         -               -

   - Conning tower: 0.79" / 20 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 2,200 ihp / 1,642 Kw = 18.05 kts
   Range 2,600nm at 10.00 kts (Bunkerage = 87 tons)

Complement:
   46 - 60

Cost:
   £0.038 million / $0.154 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.6 %
   Armour: 2 tons, 0.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 1 tons, 0.2 %
   Machinery: 169 tons, 40.6 %
   Hull, fittings & equipment: 134 tons, 32.2 %
   Fuel, ammunition & stores: 59 tons, 14.1 %
   Miscellaneous weights: 50 tons, 12.0 %
      - 30 tons, minesweeping gear
      - 10 tons, Markoni room
      - 10 tons, climatisation

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     255 lbs / 116 Kg = 12.3 x 3.5 " / 88 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 1.53

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.663
   Length to Beam Ratio: 8.66 : 1
   'Natural speed' for length: 12.84 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   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:         14.44 ft / 4.40 m
      - Forecastle (20 %):      9.19 ft / 2.80 m
      - Mid (50 %):      9.19 ft / 2.80 m
      - Quarterdeck (15 %):   9.19 ft / 2.80 m
      - Stern:         9.19 ft / 2.80 m
      - Average freeboard:      9.61 ft / 2.93 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 149.1 %
      - Above water (accommodation/working, high = better): 91.4 %
   Waterplane Area: 2,403 Square feet or 223 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 27 lbs/sq ft or 131 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.84
      - Longitudinal: 4.63
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

based on the design by the Mad Hun Pirate Dread Kaptian Borys...