X. (e) Staatsyachts (State Yachts)

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IX. Auxiliaries.
..(e) Staatsyachts (Royal Yachts).
.....SMS Hohenzollern

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Hohenzollern class

SMS Hohenzollern - laid down 1891, completed 1893 - Scuttled 16 December 1907



Hohenzollern, Brandenburgian Royal Yacht laid down 1891

Displacement:
4,311 t light; 4,413 t standard; 4,998 t normal; 5,465 t full load

Dimensions: Length overall / water x beam x draught
400.26 ft / 380.58 ft x 45.93 ft x 20.01 ft (normal load)
122.00 m / 116.00 m x 14.00 m x 6.10 m

Armament:
2 - 3.46" / 88.0 mm guns in single mounts, 15.43lbs / 7.00kg shells, 1892 Model
Quick firing guns in deck mounts
on side, all forward

Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 150

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

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 10,000 ihp / 7,460 Kw = 19.81 kts
Range 2,520nm at 14.00 kts (Bunkerage = 1,052 tons)

Complement:
296 - 386

Cost:
£0.410 million / $1.639 million

Distribution of weights at normal displacement:
Armament: 5 tons, 0.1 %
Armour: 3 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,818 tons, 36.4 %
Hull, fittings & equipment: 1,985 tons, 39.7 %
Fuel, ammunition & stores: 687 tons, 13.7 %
Miscellaneous weights: 500 tons, 10.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,036 lbs / 1,831 Kg = 194.1 x 3.5 " / 88 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 1.7 ft / 0.5 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 8.29 : 1
'Natural speed' for length: 19.51 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -5.00 degrees
Stern overhang: 19.69 ft / 6.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (20 %): 26.25 ft / 8.00 m
- Mid (50 %): 24.61 ft / 7.50 m
- Quarterdeck (15 %): 24.61 ft / 7.50 m
- Stern: 24.61 ft / 7.50 m
- Average freeboard: 25.44 ft / 7.76 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 129.6 %
- Above water (accommodation/working, high = better): 187.3 %
Waterplane Area: 11,647 Square feet or 1,082 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 68 lbs/sq ft or 331 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.79
- Longitudinal: 8.20
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
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