Minas Gerais, Empire of Brazil Destroyer laid down 1944
Displacement:
1,806 t light; 1,961 t standard; 2,402 t normal; 2,755 t full load
Dimensions: Length overall / water x beam x draught
379.43 ft / 372.00 ft x 35.40 ft x 15.20 ft (normal load)
115.65 m / 113.39 m x 10.79 m x 4.63 m
Armament:
6 - 4.72" / 120 mm guns (3x2 guns), 52.72lbs / 23.91kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
24 - 1.46" / 37.0 mm guns (6x4 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread
Weight of broadside 355 lbs / 161 kg
Shells per gun, main battery: 500
9 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.80" / 20 mm - 0.80" / 20 mm
2nd: 0.25" / 6 mm - -
- Conning tower: 1.80" / 46 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 37,080 shp / 27,662 Kw = 32.50 kts
Range 9,800nm at 15.00 kts
Bunker at max displacement = 794 tons
Complement:
171 - 223
Cost:
£1.568 million / $6.273 million
Distribution of weights at normal displacement:
Armament: 44 tons, 1.8 %
Armour: 20 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 7 tons, 0.3 %
Machinery: 947 tons, 39.4 %
Hull, fittings & equipment: 706 tons, 29.4 %
Fuel, ammunition & stores: 596 tons, 24.8 %
Miscellaneous weights: 90 tons, 3.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,004 lbs / 455 Kg = 19.0 x 4.7 " / 120 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.6 ft / 0.5 m
Roll period: 11.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.67
Seaboat quality (Average = 1.00): 1.30
Hull form characteristics:
Hull has low quarterdeck
and transom stern
Block coefficient: 0.420
Length to Beam Ratio: 10.51 : 1
'Natural speed' for length: 22.15 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 54
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 1.00 ft / 0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.00 ft / 7.32 m
- Forecastle (20 %): 19.00 ft / 5.79 m
- Mid (50 %): 18.00 ft / 5.49 m
- Quarterdeck (30 %): 11.00 ft / 3.35 m (18.00 ft / 5.49 m before break)
- Stern: 11.00 ft / 3.35 m
- Average freeboard: 16.65 ft / 5.07 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 149.2 %
- Above water (accommodation/working, high = better): 91.9 %
Waterplane Area: 8,523 Square feet or 792 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 38 lbs/sq ft or 188 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.51
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
I removed the splinter deck and modified the freeboard. the extra deck space allowed me to upgrade the torpedo armament. the ships stability is also much better.