Maori DD1912

[Valles]

In Sacred Names, Maori Destroyer laid down 1912 (Engine 1909)

Displacement:
   749 t light; 791 t standard; 993 t normal; 1,155 t full load

Dimensions: Length overall / water x beam x draught
   295.26 ft / 288.71 ft x 26.25 ft x 9.84 ft (normal load)
   90.00 m / 88.00 m x 8.00 m  x 3.00 m

Armament:
      2 - 5.91" / 150 mm guns in single mounts, 102.98lbs / 46.71kg shells, 1912 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread
      3 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all amidships, 1 raised mount
      12 - 0.31" / 8.0 mm guns (4x3 guns), 0.02lbs / 0.01kg shells, 1912 Model
     Machine guns in deck mounts
     on side ends, evenly spread
   Weight of broadside 245 lbs / 111 kg
   Shells per gun, main battery: 150
   2 - 15.7" / 400 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.12" / 3 mm   0.12" / 3 mm            -
   2nd:   0.12" / 3 mm   0.12" / 3 mm            -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 13,414 shp / 10,007 Kw = 27.00 kts
   Range 5,000nm at 13.00 kts
   Bunker at max displacement = 364 tons

Complement:
   87 - 114

Cost:
   £0.114 million / $0.455 million

Distribution of weights at normal displacement:
   Armament: 31 tons, 3.1 %
   Armour: 2 tons, 0.2 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2 tons, 0.2 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 442 tons, 44.5 %
   Hull, fittings & equipment: 258 tons, 26.0 %
   Fuel, ammunition & stores: 244 tons, 24.5 %
   Miscellaneous weights: 16 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     303 lbs / 137 Kg = 2.9 x 5.9 " / 150 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.34
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.57
   Seaboat quality  (Average = 1.00): 1.45

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.466
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 16.99 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 73
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 2.36 ft / 0.72 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19.69 ft / 6.00 m
      - Forecastle (20 %):   16.40 ft / 5.00 m
      - Mid (50 %):      16.40 ft / 5.00 m (7.55 ft / 2.30 m aft of break)
      - Quarterdeck (15 %):   7.55 ft / 2.30 m
      - Stern:      7.55 ft / 2.30 m
      - Average freeboard:   12.24 ft / 3.73 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 169.3 %
      - Above water (accommodation/working, high = better): 112.0 %
   Waterplane Area: 4,899 Square feet or 455 Square metres
   Displacement factor (Displacement / loading): 67 %
   Structure weight / hull surface area: 25 lbs/sq ft or 122 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.93
      - Overall: 0.57
   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
   Good seaboat, rides out heavy weather easily

10 tons short-range wireless
4 tons torpedoes


Essentially a repeat of the 1911 type destroyers with a tweaked gun layout and marginally improved crew arrangements. The major ammunition storage/transfer problems the older ones have haven't been solved; they still are limited to short 'bursts' of only a couple of dozen rounds in each deckhouse.