VIII. (a) Transportdampfen (Transports)

[The Rock Doctor]

SMS Hohenfriedberg
SMS Rossbach
SMS Leuthen

[The Rock Doctor]

Hohenfriedberg Class

A small transport, capable of embarking five hundred troops.  The type would mostly be used for moving troops within DKB's archipelagic possessions, but also between Afrika and Viktorialand as required.  They can also be used for limited amphibious actions, or to supplement larger liners requisitioned in wartime.

These ships will be built to civilian standards.

SMS Hohenfriedberg, laid down 1912
SMS Rossbach, laid down 1912
SMS Leuthen, laid down 1912

Hohenfriedberg, type laid down 1912

Displacement:
  2,773 t light; 2,845 t standard; 3,140 t normal; 3,377 t full load

Dimensions: Length overall / water x beam x draught
  295.28 ft / 295.28 ft x 45.93 ft x 12.47 ft (normal load)
  90.00 m / 90.00 m x 14.00 m  x 3.80 m

Armament:
     2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1912 Model
    Breech loading guns in deck mounts with hoists
    on centreline ends, majority forward, 1 raised mount
     2 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1912 Model
    Breech loading anti-zeppelin guns in deck mounts
    on side, all amidships
     2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1912 Model
    Breech loading guns in deck mounts
    on side, evenly spread
  Weight of broadside 74 lbs / 33 kg
  Shells per gun, main battery: 200

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
  Main:   0.98" / 25 mm         -         0.98" / 25 mm
  2nd:   0.98" / 25 mm         -               -
  3rd:   0.39" / 10 mm         -               -

Machinery:
  Coal and oil fired boilers, complex reciprocating steam engines,
  Geared drive, 2 shafts, 3,000 ihp / 2,238 Kw = 14.93 kts
  Range 6,000nm at 10.00 kts (Bunkerage = 532 tons)

Complement:
  209 - 272

Cost:
  £0.131 million / $0.525 million

Distribution of weights at normal displacement:
  Armament: 9 tons, 0.3 %
  Armour: 7 tons, 0.2 %
     - Belts: 0 tons, 0.0 %
     - Torpedo bulkhead: 0 tons, 0.0 %
     - Armament: 7 tons, 0.2 %
     - Armour Deck: 0 tons, 0.0 %
     - Conning Tower: 0 tons, 0.0 %
  Machinery: 189 tons, 6.0 %
  Hull, fittings & equipment: 1,068 tons, 34.0 %
  Fuel, ammunition & stores: 367 tons, 11.7 %
  Miscellaneous weights: 1,500 tons, 47.8 %
  -1000 t:  Accomodation for 500 troops
  -75 t:  Derricks
  -60 t:  Six 10 t steam launches above and beyond normal ship's boats
  -25 t:  Long-range wireless
  -300 t:  Cargo
  -40 t:  Weight reserve  
 
Overall survivability and seakeeping ability:
  Survivability (Non-critical penetrating hits needed to sink ship):
    6,189 lbs / 2,808 Kg = 175.2 x 4.1 " / 105 mm shells or 1.4 torpedoes
  Stability (Unstable if below 1.00): 1.05
  Metacentric height 1.7 ft / 0.5 m
  Roll period: 14.7 seconds
  Steadiness   - As gun platform (Average = 50 %): 50 %
        - Recoil effect (Restricted arc if above 1.00): 0.07
  Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
  Hull has a flush deck
  Block coefficient: 0.650
  Length to Beam Ratio: 6.43 : 1
  'Natural speed' for length: 17.18 kts
  Power going to wave formation at top speed: 43 %
  Trim (Max stability = 0, Max steadiness = 100): 25
  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:      19.69 ft / 6.00 m
     - Forecastle (20 %):   19.69 ft / 6.00 m
     - Mid (50 %):      19.69 ft / 6.00 m
     - Quarterdeck (15 %):   19.69 ft / 6.00 m
     - Stern:      19.69 ft / 6.00 m
     - Average freeboard:   19.69 ft / 6.00 m

Ship space, strength and comments:
  Space   - Hull below water (magazines/engines, low = better): 74.5 %
     - Above water (accommodation/working, high = better): 186.4 %
  Waterplane Area: 10,390 Square feet or 965 Square metres
  Displacement factor (Displacement / loading): 160 %
  Structure weight / hull surface area: 59 lbs/sq ft or 289 Kg/sq metre
  Hull strength (Relative):
     - Cross-sectional: 0.89
     - Longitudinal: 4.69
     - Overall: 1.05
  Hull space for machinery, storage, compartmentation is excellent
  Room for accommodation and workspaces is excellent
  Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Sachmle]

Large transports capable of moving 4,000 troops over long distances.

AK-301, Laid down 1918, in service July 1920
AK-302, Laid down 1918, in service July 1920

AK-300 Class, DKB Transferdamphen laid down 1918 (Engine 1916)

Displacement:
   15,000 t light; 15,429 t standard; 21,060 t normal; 25,565 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 92.95 ft x 23.00 ft (normal load)
   170.00 m / 170.00 m x 28.33 m  x 7.01 m

Armament:
      2 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1905 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, 1918 Model
     Quick firing guns in deck mounts
     on side, all forward
   Weight of broadside 86 lbs / 39 kg
   Shells per gun, main battery: 150

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.98" / 25 mm            -

   - Conning tower: 1.97" / 50 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 14,000 ihp / 10,444 Kw = 17.18 kts
   Range 18,500nm at 14.00 kts
   Bunker at max displacement = 10,136 tons (50% coal)

Complement:
   873 - 1,136

Cost:
   £1.312 million / $5.248 million

Distribution of weights at normal displacement:
   Armament: 11 tons, 0.1 %
   Armour: 41 tons, 0.2 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 8 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 32 tons, 0.2 %
   Machinery: 871 tons, 4.1 %
   Hull, fittings & equipment: 5,077 tons, 24.1 %
   Fuel, ammunition & stores: 6,060 tons, 28.8 %
   Miscellaneous weights: 9,000 tons, 42.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     34,919 lbs / 15,839 Kg = 988.6 x 4.1 " / 105 mm shells or 4.3 torpedoes
   Stability (Unstable if below 1.00): 1.20
   Metacentric height 6.3 ft / 1.9 m
   Roll period: 15.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 1.82

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0.618
   Length to Beam Ratio: 6.00 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 35 %
   Trim (Max stability = 0, Max steadiness = 100): 39
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      24.61 ft / 7.50 m
      - Forecastle (25 %):   24.61 ft / 7.50 m (16.40 ft / 5.00 m aft of break)
      - Mid (50 %):      16.40 ft / 5.00 m
      - Quarterdeck (20 %):   24.61 ft / 7.50 m (16.40 ft / 5.00 m before break)
      - Stern:      24.61 ft / 7.50 m
      - Average freeboard:   20.10 ft / 6.13 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 61.2 %
      - Above water (accommodation/working, high = better): 138.0 %
   Waterplane Area: 38,565 Square feet or 3,583 Square metres
   Displacement factor (Displacement / loading): 194 %
   Structure weight / hull surface area: 99 lbs/sq ft or 484 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.22
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

50t Reserve Weight
25t Sehendes Auge
25t Markoni Installation
8,000t for 4,000 Troops
900t Supplies