Returned to UK as a museum ship
HMAS Australia (Ex-HMS Iron Duke), Australia Battleship laid down 1912
Displacement:
24,389 t light; 26,115 t standard; 27,875 t normal; 29,282 t full load
Dimensions: Length overall / water x beam x draught
623.00 ft / 623.00 ft x 90.00 ft x 29.00 ft (normal load)
189.89 m / 189.89 m x 27.43 m x 8.84 m
Armament:
8 - 13.50" / 343 mm guns (4x2 guns), 1,230.19lbs / 558.00kg shells, 1912 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
2 - 13.50" / 343 mm guns (1x2 guns), 1,230.19lbs / 558.00kg shells, 1912 Model
Breech loading guns in a turret (on a barbette)
on centreline amidships
10 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
Breech loading guns in casemate mounts
on side, all forward
2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1912 Model
Breech loading guns in casemate mounts
on side, all aft
2 guns in hull casemates - Limited use in heavy seas
2 - 2.99" / 75.9 mm guns in single mounts, 13.37lbs / 6.06kg shells, 1912 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 13,625 lbs / 6,180 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 400.00 ft / 121.92 m 12.00 ft / 3.66 m
Ends: 5.00" / 127 mm 223.00 ft / 67.97 m 12.00 ft / 3.66 m
Upper: 8.00" / 203 mm 400.00 ft / 121.92 m 8.00 ft / 2.44 m
Main Belt covers 99 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 400.00 ft / 121.92 m 28.00 ft / 8.53 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 279 mm 8.00" / 203 mm 8.00" / 203 mm
2nd: 11.0" / 279 mm 8.00" / 203 mm 8.00" / 203 mm
3rd: 5.00" / 127 mm - -
4th: 5.00" / 127 mm - -
- Armour deck: 3.00" / 76 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Geared drive, 4 shafts, 32,693 shp / 24,389 Kw = 21.00 kts
Range 7,900nm at 12.00 kts
Bunker at max displacement = 3,167 tons
Complement:
1,078 - 1,402
Cost:
£2.467 million / $9.867 million
Distribution of weights at normal displacement:
Armament: 1,703 tons, 6.1 %
Armour: 9,846 tons, 35.3 %
- Belts: 4,111 tons, 14.7 %
- Torpedo bulkhead: 829 tons, 3.0 %
- Armament: 2,631 tons, 9.4 %
- Armour Deck: 2,276 tons, 8.2 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,304 tons, 4.7 %
Hull, fittings & equipment: 11,536 tons, 41.4 %
Fuel, ammunition & stores: 3,486 tons, 12.5 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
45,634 lbs / 20,699 Kg = 37.1 x 13.5 " / 343 mm shells or 7.3 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 6.1 ft / 1.8 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 39 %
- Recoil effect (Restricted arc if above 1.00): 0.71
Seaboat quality (Average = 1.00): 1.24
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.600
Length to Beam Ratio: 6.92 : 1
'Natural speed' for length: 24.96 kts
Power going to wave formation at top speed: 41 %
Trim (Max stability = 0, Max steadiness = 100): 25
Bow angle (Positive = bow angles forward): -10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.00 ft / 8.23 m
- Forecastle (20 %): 26.00 ft / 7.92 m
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 22.18 ft / 6.76 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.7 %
- Above water (accommodation/working, high = better): 161.6 %
Waterplane Area: 41,009 Square feet or 3,810 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 194 lbs/sq ft or 949 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.76
- Overall: 1.04
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily