HMAS Anzac, Australia & New Zeland Aircraft Carrier laid down 1933
Displacement:
21,692 t light; 22,755 t standard; 29,185 t normal; 34,329 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(757.01 ft / 721.78 ft) x 94.82 ft x (28.22 / 32.06 ft)
(230.74 m / 220.00 m) x 28.90 m x (8.60 / 9.77 m)
Armament:
18 - 4.33" / 110 mm 45.0 cal guns - 40.96lbs / 18.58kg shells, 1,000 per gun
Anti-air guns in deck mounts, 1933 Model
8 x Twin mounts on sides, evenly spread
32 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 2,000 per gun
Anti-air guns in deck mounts, 1933 Model
8 x Quad mounts on sides, evenly spread
32 - 0.50" / 12.7 mm 45.0 cal guns - 0.06lbs / 0.03kg shells, 150 per gun
Anti-air guns in deck mounts, 1933 Model
8 x Quad mounts on sides, evenly spread
Weight of broadside 802 lbs / 364 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 469.16 ft / 143.00 m 11.68 ft / 3.56 m
Ends: 1.97" / 50 mm 252.59 ft / 76.99 m 11.68 ft / 3.56 m
Upper: 1.97" / 50 mm 469.16 ft / 143.00 m 8.01 ft / 2.44 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead - Strengthened structural bulkheads:
3.94" / 100 mm 469.16 ft / 143.00 m 25.49 ft / 7.77 m
Beam between torpedo bulkheads 88.58 ft / 27.00 m
- Armoured deck - multiple decks:
For and Aft decks: 1.97" / 50 mm
Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm
- Conning towers: Forward 19.69" / 500 mm, Aft 19.69" / 500 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 139,987 shp / 104,431 Kw = 31.00 kts
Range 14,100nm at 20.00 kts
Bunker at max displacement = 11,574 tons
Complement:
1,116 - 1,451
Cost:
£6.477 million / $25.909 million
Distribution of weights at normal displacement:
Armament: 126 tons, 0.4 %
- Guns: 126 tons, 0.4 %
Armour: 5,248 tons, 18.0 %
- Belts: 983 tons, 3.4 %
- Torpedo bulkhead: 1,742 tons, 6.0 %
- Armour Deck: 1,719 tons, 5.9 %
- Conning Towers: 804 tons, 2.8 %
Machinery: 4,079 tons, 14.0 %
Hull, fittings & equipment: 6,739 tons, 23.1 %
Fuel, ammunition & stores: 7,493 tons, 25.7 %
Miscellaneous weights: 5,500 tons, 18.8 %
- Hull above water: 5,500 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
46,103 lbs / 20,912 Kg = 1,135.2 x 4.3 " / 110 mm shells or 8.0 torpedoes
Stability (Unstable if below 1.00): 1.31
Metacentric height 7.5 ft / 2.3 m
Roll period: 14.5 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 1.21
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.529 / 0.548
Length to Beam Ratio: 7.61 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 50.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 29.56 ft / 9.01 m, 24.18 ft / 7.37 m
- Forward deck: 30.00 %, 24.18 ft / 7.37 m, 18.80 ft / 5.73 m
- Aft deck: 35.00 %, 18.80 ft / 5.73 m, 18.80 ft / 5.73 m
- Quarter deck: 15.00 %, 18.80 ft / 5.73 m, 18.80 ft / 5.73 m
- Average freeboard: 21.11 ft / 6.44 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.5 %
- Above water (accommodation/working, high = better): 160.2 %
Waterplane Area: 46,833 Square feet or 4,351 Square metres
Displacement factor (Displacement / loading): 151 %
Structure weight / hull surface area: 129 lbs/sq ft or 632 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.07
- Longitudinal: 1.14
- Overall: 1.08
Excellent machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Ordered in 1933 by Australia & New Zealand the one ship class was soon made into 2 due to rising tensions in the south-east Asian region. Both HMAS Anzac & Gallipoli were commissioned in 1937 but remained in Britain until 1940 because of training of air & ship crews and the outbreak of ww2. The ships served in the hunts against the Bismarck & graf spee
They reached Australia in 1941 along with HMAS Australia the newly commissioned battleship and served in the south-east region. The ship HMAS Anzac was damaged in the battle of midway after Kamkize planes hit her deck while an aircraft was refuelling & remained in repairs until 1945 while her sister HMAS Gallipoli was credited with the sinking of IJN Soryu, IJN Akagi, IJN Kongo & IJN Shinano. Both ships remained in service until 1970 when HMAS ANZAC was transferred to a training ship & HMAS Gallipoli was made into a floating museum.
Air Group in 1939-
36 ×
Fairey Swordfish, 34 ×
Blackburn Skuas
Airgroup in 1942-
35 x F4F Wildcats
15 x TBD Dauntless
15 x tbf avengers