Brandenburg Kohleschiff

[Sachmle]

The Admiralstab realizing that the Kaiserliche Marine needs the capacity to project power to all its many overseas possessions as well as operate in the large Pacific and Indian Oceans the following ship was presented as an option. A large collier to support the Hochseeflotte. Another one, of a smaller design, may be laid down at a later date to support the Indischerflotte.

Viktorialand, DKB Kohleschiff laid down 1915 (Engine 1912)

Displacement:
   4,500 t light; 4,729 t standard; 11,194 t normal; 16,366 t full load

Dimensions: Length overall / water x beam x draught
   393.70 ft / 393.70 ft x 65.62 ft x 22.97 ft (normal load)
   120.00 m / 120.00 m x 20.00 m  x 7.00 m

Armament:
      2 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1900 Model
     Quick firing guns in deck mounts
     on side, all aft
      4 - 1.97" / 50.0 mm guns in single mounts, 3.86lbs / 1.75kg shells, 1903 Model
     Quick firing guns in deck mounts
     on side, all forward
   Weight of broadside 60 lbs / 27 kg
   Shells per gun, main battery: 150

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,161 ihp / 9,072 Kw = 18.00 kts
   Range 36,000nm at 12.00 kts
   Bunker at max displacement = 11,636 tons (100% coal)

Complement:
   543 - 707

Cost:
   £0.402 million / $1.607 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 0.1 %
   Armour: 4 tons, 0.0 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 4 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 805 tons, 7.2 %
   Hull, fittings & equipment: 2,284 tons, 20.4 %
   Fuel, ammunition & stores: 6,694 tons, 59.8 %
   Miscellaneous weights: 1,400 tons, 12.5 %
        - 1000t Loading Equipment
        - 250t Surplus Stores
        - 100t Reserve Weight
        - 25t Markoni Installation
        - 25t Sehendes Auge

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     31,984 lbs / 14,508 Kg = 1,538.2 x 3.5 " / 88 mm shells or 4.9 torpedoes
   Stability (Unstable if below 1.00): 1.69
   Metacentric height 6.3 ft / 1.9 m
   Roll period: 10.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0.660
   Length to Beam Ratio: 6.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   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:      21.00 ft / 6.40 m
      - Forecastle (25 %):   21.00 ft / 6.40 m (13.94 ft / 4.25 m aft of break)
      - Mid (50 %):      13.94 ft / 4.25 m
      - Quarterdeck (20 %):   20.51 ft / 6.25 m (13.94 ft / 4.25 m before break)
      - Stern:      20.51 ft / 6.25 m
      - Average freeboard:   17.02 ft / 5.19 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 38.9 %
      - Above water (accommodation/working, high = better): 97.7 %
   Waterplane Area: 19,979 Square feet or 1,856 Square metres
   Displacement factor (Displacement / loading): 364 %
   Structure weight / hull surface area: 78 lbs/sq ft or 380 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.79
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   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