Tamandaré was born after the Brazilian naval attacher in Paris was alerted, in 1932, by Marine Nationale officers that two Imperatritsa Mariya Russian Battleships interned in Toulon were to be scrapped. They remembered the Brazilian officer the excelent performance of Russian guns. With some modernization, the turrets could fit a new battlecruiser. The Ministério da Marinha bought the hulks from France and open a bid to built two new hulls to be named as T-1, Tamandaré, and T-2, Barroso. The idea was something able to fight raiders in an eventual new European conflict. The Brazilian President, Getúlio Vargas, pay part of the bargain with the French governement with coffee and cotton. The bid was won by Armstrong Whitworth & Co Ltd and the two Russian hulks were sent to Britain to be dismounted. The 130 mm guns were removed and sent to Brazil (the idea was use them in railway mounts for coastal defence). The original design was prepared with 4.5 in. secondary guns, but the American Naval Comission at Rio de Janeiro proposed a new 5 in. antiaircraft double mount. The British builders reserved the space for the American guns and, after the simultaneous launching of both ships, at 11th June in 1935, the Brazilian Navy Day, and the machine trials they crossed the Atlantic to receive their secondary guns. They arrived at Rio de Janeiro in January 1st 1936 and served until 1974.
This is SpringSharp prevision:
Tamandaré, Brazil Battlecruiser laid down 1935
Displacement:
22,932 t light; 24,292 t standard; 30,014 t normal; 34,591 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(666.08 ft / 656.17 ft) x 85.30 ft x (27.89 / 31.55 ft)
(203.02 m / 200.00 m) x 26.00 m x (8.50 / 9.62 m)
Armament:
9 - 12" / 305 mm 52 cal guns – 924.41lbs / 419.31kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1935 Model
2 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
1 x 2 row sextuple mount on centreline ends, evenly spread
1 hull mount in lower deck- Limited use in all but light seas
8 – 5.00" / 127 mm 38 cal guns – 59.33lbs / 26.91kg shells, 250 per gun
Breech loading guns in deck mounts, 1935 Model
4 x Twin mounts on sides, evenly spread
4 raised mounts
26 – 0.79" / 20.0 mm 99 cal guns – 0.25lbs / 0.11kg shells, 150 per gun
Breech loading guns in deck mounts, 1935 Model
26 x Single mounts on sides amidships
Weight of broadside 8,801 lbs / 3,992 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.84" / 250 mm 469.16 ft / 143.00 m 22.97 ft / 7.00 m
Ends: Unarmoured
Main Belt covers 110% of normal length
- Torpedo Bulkhead:
5.91" / 150 mm 469,16 ft / 143.00 m 27.89 ft / 8.50 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.84" / 250 mm - 9.84" / 250 mm
- Armoured deck - multiple decks: 1.97" / 50 mm For and Aft decks
Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm
- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 180,222 shp / 134,446 Kw = 32.00 kts
Range 12,000nm at 20.00 kts
Bunker at max displacement = 10,299 tons
Complement:
1,139 – 1,482
Cost:
£12.405 million / $49.620 million
Distribution of weights at normal displacement:
Armament: 1,892 tons, 6.3%
Armour: 9,862 tons, 32.9%
- Belts: 4,461 tons, 14.9%
- Torpedo bulkhead: 2,859 tons, 9.5%
- Armament: 731 tons, 2.4%
- Armour Deck: 1,606 tons, 5.4%
- Conning Tower: 205 tons, 0.7%
Machinery: 5,120 tons, 17.1%
Hull, fittings & equipment: 6,058 tons, 20.2%
Fuel, ammunition & stores: 7,082 tons, 23.6%
Miscellaneous weights: 0 tons, 0.0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
32.312 lbs / 14.657 Kg = 37,3 x 12,0 " / 305 mm shells or 5,4 torpedoes
Stability (Unstable if below 1.00): 1,41
Metacentric height 7,2 ft / 2,2 m
Roll period: 13,4 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0,35
Seaboat quality (Average = 1.00): 0,91
Hull form characteristics:
Hull has low quarterdeck ,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0,673 / 0,686
Length to Beam Ratio: 7,69 : 1
'Natural speed' for length: 25,62 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 20,00 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%, 27,23 ft / 8,30 m, 22,97 ft / 7,00 m
- Forward deck: 30,00%, 22,97 ft / 7,00 m, 22,97 ft / 7,00 m
- Aft deck: 25,00%, 22,97 ft / 7,00 m, 22,97 ft / 7,00 m
- Quarter deck: 25,00%, 16,40 ft / 5,00 m, 16,40 ft / 5,00 m
- Average freeboard: 21,67 ft / 6,60 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109,8%
- Above water (accommodation/working, high = better): 168,2%
Waterplane Area: 43.787 Square feet or 4.068 Square metres
Displacement factor (Displacement / loading): 104%
Structure weight / hull surface area: 109 lbs/sq ft or 532 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,75
- Longitudinal: 1,06
- Overall: 0,78
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather