V. (a) Panzerbooten (Armoured Boats)

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V. Kanonbooten (Gunboats).
..(a) Panzerbooten (Armoured Boats)
.....SMS Hyäne

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Hyäne class

SMS Hyäne - laid down 1908



Deutsches Kaiserreich Brandenburg Panzerschiff laid down 1908 (Engine 1909)

Displacement:
   2,999 t light; 3,186 t standard; 3,611 t normal; 3,951 t full load

Dimensions: Length overall / water x beam x draught
   300.20 ft / 285.43 ft x 48.39 ft x 15.91 ft (normal load)
   91.50 m / 87.00 m x 14.75 m  x 4.85 m

Armament:
      2 - 8.27" / 210 mm guns in single mounts, 275.58lbs / 125.00kg shells, 1895 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      6 - 5.91" / 150 mm guns in single mounts, 99.21lbs / 45.00kg shells, 1896 Model
     Breech loading guns in casemate mounts
     on side, all amidships
      6 - 3.46" / 88.0 mm guns in single mounts, 15.43lbs / 7.00kg shells, 1892 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread, all raised mounts
      1 - 1.46" / 37.0 mm guns in single mounts, 1.54lbs / 0.70kg shells, 1905 Model
     Anti-airship gun in deck mount
     on centreline aft, 1 raised gun - superfiring
      4 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1897 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts

   Weight of broadside 1,241 lbs / 563 kg
   Shells per gun, main battery: 150

      1 - 13.8" / 350 mm, 15.59 ft / 4.75 m torpedo
   In a submerged bow tube
      2 - 13.8" / 350 mm, 15.59 ft / 4.75 m torpedoes
   In 2 sets of submerged side tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:      7.87" / 200 mm   180.45 ft / 55.00 m   9.84 ft / 3.00 m
   Ends:      1.97" / 50 mm   104.99 ft / 32.00 m   9.84 ft / 3.00 m
   Upper:      1.97" / 50 mm   180.45 ft / 55.00 m   8.20 ft / 2.50 m
     Main Belt covers 97 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:      3.94" / 100 mm   1.97" / 50 mm      7.87" / 200 mm
   2nd:      1.97" / 50 mm         -         1.97" / 50 mm
   3rd:      0.98" / 25 mm         -               -

   - Armour deck: 1.97" / 50 mm, Conning tower: 7.87" / 200 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 5,000 shp / 3,730 Kw = 16.77 kts
   Range 6,500nm at 10.00 kts (Bunkerage = 765 tons) (95% coal)

Complement:
   232 - 302

Cost:
   £0.277 million / $1.109 million

Distribution of weights at normal displacement:
   Armament: 164 tons, 4.5 %
   Armour: 1,404 tons, 38.9 %
      - Belts: 825 tons, 22.9 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 179 tons, 5.0 %
      - Armour Deck: 359 tons, 10.0 %
      - Conning Tower: 40 tons, 1.1 %
   Machinery: 249 tons, 6.9 %
   Hull, fittings & equipment: 1,134 tons, 31.4 %
   Fuel, ammunition & stores: 611 tons, 16.9 %
   Miscellaneous weights: 50 tons, 1.4 %
      - 10 tons, Markoni room
      - 10 tons, torpedoes, 3 per tube
      - 10 tons, climatisation
      - 20 tons, weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,974 lbs / 2,710 Kg = 21.1 x 8.3 " / 210 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 2.4 ft / 0.7 m
   Roll period: 13.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.44
   Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.575
   Length to Beam Ratio: 5.90 : 1
   'Natural speed' for length: 16.89 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 14.76 ft / 4.50 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:         15.58 ft / 4.75 m
      - Forecastle (20 %):      13.12 ft / 4.00 m
      - Mid (50 %):      11.48 ft / 3.50 m
      - Quarterdeck (15 %):   11.48 ft / 3.50 m
      - Stern:         11.48 ft / 3.50 m
      - Average freeboard:      12.25 ft / 3.74 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 63.6 %
      - Above water (accommodation/working, high = better): 96.1 %
   Waterplane Area: 9,869 Square feet or 917 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 78 lbs/sq ft or 381 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.27
      - 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