WesWorld

With this info I think is fiscally possible for Brazil to scrap the Sao Paulo and built two of the armored cruisers. By scrapping the Paulo they will get over 2700 tons; they will only need to rebuilt one turret at around 100 tons (IIRC the design have three turrets, one superfiring). They can take out of the design a month of construction and close to 1300 tons of the total tonnage of each of the two cruisers. You could have two capable ships for around a little under 36000 tons plus you have almost 3000 tons to play with for other projects.

Oh, TC, just noticed... you lengthened the hull and increased speed a hair while switching over from Constitution to Minas Gerais, but that's thrown off the main belt coverage. I kept having to fiddle with that every time I changed Connie's dimensions...

Here's an alternate proposal, although it doesn't reuse the Sao Paulo's old guns. Switched out the Chilean 10" guns for faster-firing 9.2" guns, which in turn allowed a substantial increase of deck, turret, and belt armour. The 9.2" guns also have an increased shell weight to be only sixty pounds lighter than the Chilean 10"/50cal guns. This design will get your .25 knots speed edge over Constitution, but be better protected at the very slight cost of armament size.

Note bene: I don't really think a .25 knot change in speed is really worth it. It translates into 463 meters more per hour... or just a tad bit more than two ship-lengths. That's why I finally cut the Cousins down from 33.5 knots to 33 knots.

Quoted

Minas Gerais, Brazilian Heavy Cruiser laid down 1937

Displacement:
18,350 t light; 19,205 t standard; 21,940 t normal; 24,128 t full load

Dimensions: Length overall / water x beam x draught
734.56 ft / 700.00 ft x 68.00 ft (Bulges 74.00 ft) x 27.10 ft (normal load)
223.89 m / 213.36 m x 20.73 m (Bulges 22.56 m) x 8.26 m

Armament:
9 - 9.20" / 234 mm guns (3x3 guns), 440.92lbs / 200.00kg shells, 1937 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
2 - 4.72" / 120 mm guns (1x2 guns), 52.72lbs / 23.92kg shells, 1937 Model
Dual purpose guns in a deck mount with hoist
on centreline aft, all raised guns - superfiring
12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.92kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
12 - 2.24" / 57.0 mm guns (6x2 guns), 5.65lbs / 2.56kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
16 - 1.38" / 35.0 mm guns (8x2 guns), 1.31lbs / 0.59kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 4,795 lbs / 2,175 kg
Shells per gun, main battery: 150
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 488.00 ft / 148.74 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 107 % of normal length

- Torpedo Bulkhead and Bulges:
1.00" / 25 mm 514.00 ft / 156.67 m 26.00 ft / 7.92 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.00" / 229 mm 7.00" / 178 mm 8.00" / 203 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
4th: 1.00" / 25 mm - -
5th: 1.00" / 25 mm - -

- Armour deck: 3.75" / 95 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 133,650 shp / 99,703 Kw = 33.25 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 4,923 tons

Complement:
900 - 1,171

Cost:
£8.812 million / $35.249 million

Distribution of weights at normal displacement:
Armament: 541 tons, 2.5 %
Armour: 5,766 tons, 26.3 %
- Belts: 1,607 tons, 7.3 %
- Torpedo bulkhead: 494 tons, 2.3 %
- Armament: 1,221 tons, 5.6 %
- Armour Deck: 2,392 tons, 10.9 %
- Conning Tower: 51 tons, 0.2 %
Machinery: 3,704 tons, 16.9 %
Hull, fittings & equipment: 8,169 tons, 37.2 %
Fuel, ammunition & stores: 3,590 tons, 16.4 %
Miscellaneous weights: 170 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
31,939 lbs / 14,487 Kg = 82.0 x 9.2 " / 234 mm shells or 4.2 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 3.4 ft / 1.0 m
Roll period: 16.8 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.69
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.547
Length to Beam Ratio: 9.46 : 1
'Natural speed' for length: 30.17 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 50.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.00 ft / 8.84 m
- Forecastle (20 %): 26.00 ft / 7.92 m
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (15 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 24.94 ft / 7.60 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 107.2 %
- Above water (accommodation/working, high = better): 147.5 %
Waterplane Area: 34,486 Square feet or 3,204 Square metres
Displacement factor (Displacement / loading): 124 %
Structure weight / hull surface area: 137 lbs/sq ft or 669 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.60
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Air search radar - 20 tons
Surface search radar - 20 tons
Radar-assisted fire control - 30 tons
2 Seaplanes - 50 tons
Catapult - 35 tons
Air conditioning/Heating - 10 tons
Crew Comforts, movie theatre, ice cream machines - 5 tons
Total extra weight - 170 tons

Forgot about the main belt, the length extension was to cover the useage of larger guns (12in) and still keep close to the same seakeeping and stability, while the speed increase was so to use up the .01 composite strength I found myself left with. If I reduce the BC to .547, subtract the .25 knot increase, and lenghten the belt to 522.04 feet, it works and I save myself about 100 tons.

If Brazil is interested then the plans for Project 118C can be sent to your naval engineers. Its a good small fast capital unit and equal, if not superior, to some of the designs entered in the Argentine contest. The 118A-C series range over 33-34,000 tons. They are about the pinnacle that can be achieved on 220m length without serious compromises.

Quoted

Originally posted by TheCanadian
...and I save myself about 100 tons.

Time to go out and buy a Dinghy to celebrate!!!

The last Almirante class cruiser, the Almirante Saldanha won't likely be laid down until 1938, or 1939. Here is the design for her, which in comparison to the originals shaves off some armour for speed, and adds a DP secondary battery.

Almirante Saldanha , Brazil Light Cruiser laid down 1938

Displacement:
10,375 t light; 10,815 t standard; 12,082 t normal; 13,096 t full load

Dimensions: Length overall / water x beam x draught
610.26 ft / 600.00 ft x 65.00 ft x 21.60 ft (normal load)
186.01 m / 182.88 m x 19.81 m x 6.58 m

Armament:
15 - 5.98" / 152 mm guns (5x3 guns), 120.00lbs / 54.43kg shells, 1938 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 2 raised mounts - superfiring
8 - 4.72" / 120 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
20 - 1.46" / 37.0 mm guns (10x2 guns), 1.57lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
16 - 0.54" / 13.7 mm guns (8x2 guns), 0.08lbs / 0.04kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 2,273 lbs / 1,031 kg
Shells per gun, main battery: 150
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.00" / 127 mm 390.00 ft / 118.87 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 2.25" / 57 mm 4.00" / 102 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm - -

- Armour deck: 3.00" / 76 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 82,367 shp / 61,446 Kw = 32.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 2,281 tons

Complement:
576 - 749

Cost:
£5.046 million / $20.185 million

Distribution of weights at normal displacement:
Armament: 258 tons, 2.1 %
Armour: 2,873 tons, 23.8 %
- Belts: 817 tons, 6.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 519 tons, 4.3 %
- Armour Deck: 1,503 tons, 12.4 %
- Conning Tower: 34 tons, 0.3 %
Machinery: 2,255 tons, 18.7 %
Hull, fittings & equipment: 4,789 tons, 39.6 %
Fuel, ammunition & stores: 1,708 tons, 14.1 %
Miscellaneous weights: 200 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
19,410 lbs / 8,804 Kg = 181.1 x 6.0 " / 152 mm shells or 2.3 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 3.3 ft / 1.0 m
Roll period: 15.0 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.16

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.502
Length to Beam Ratio: 9.23 : 1
'Natural speed' for length: 28.12 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.00 ft / 6.71 m
- Forecastle (17 %): 22.00 ft / 6.71 m
- Mid (50 %): 22.00 ft / 6.71 m
- Quarterdeck (17 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 22.00 ft / 6.71 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.7 %
- Above water (accommodation/working, high = better): 155.2 %
Waterplane Area: 27,073 Square feet or 2,515 Square metres
Displacement factor (Displacement / loading): 125 %
Structure weight / hull surface area: 112 lbs/sq ft or 548 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.61
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

my mistake.

Deck armor is very heavy for a light cruiser, though the main battery and speed are up to current standard. At over 10,000 tons, she's a fairly large light cruiser.

I'd agree. Against 6" shells, I think a 2" deck would work quite well for most cruisers.

(The Greeks have a different idea for Konstantinoupolis, of course.)

Okiedoke, although I will admit I did slim it down a bit already, 0.45 of an inch to be exact. Should I perhaps bring the belt up to 5.5, and maybe add a bit of range to the design to use up the composite strength? Doing so drops the tonnage as well, here is the revised design.

Almirante Saldanha , Brazil Light Cruiser laid down 1938

Displacement:
9,952 t light; 10,393 t standard; 12,082 t normal; 13,434 t full load

Dimensions: Length overall / water x beam x draught
610.26 ft / 600.00 ft x 65.00 ft x 21.60 ft (normal load)
186.01 m / 182.88 m x 19.81 m x 6.58 m

Armament:
15 - 5.98" / 152 mm guns (5x3 guns), 120.00lbs / 54.43kg shells, 1938 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 2 raised mounts - superfiring
8 - 4.72" / 120 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
20 - 1.46" / 37.0 mm guns (10x2 guns), 1.57lbs / 0.71kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
16 - 0.54" / 13.7 mm guns (8x2 guns), 0.08lbs / 0.04kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 2,273 lbs / 1,031 kg
Shells per gun, main battery: 150
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.50" / 140 mm 390.00 ft / 118.87 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.00" / 102 mm 2.25" / 57 mm 4.00" / 102 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm - -

- Armour deck: 2.00" / 51 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 82,367 shp / 61,446 Kw = 32.00 kts
Range 13,500nm at 15.00 kts
Bunker at max displacement = 3,041 tons

Complement:
576 - 749

Cost:
£4.963 million / $19.852 million

Distribution of weights at normal displacement:
Armament: 258 tons, 2.1 %
Armour: 2,454 tons, 20.3 %
- Belts: 899 tons, 7.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 519 tons, 4.3 %
- Armour Deck: 1,002 tons, 8.3 %
- Conning Tower: 34 tons, 0.3 %
Machinery: 2,255 tons, 18.7 %
Hull, fittings & equipment: 4,785 tons, 39.6 %
Fuel, ammunition & stores: 2,130 tons, 17.6 %
Miscellaneous weights: 200 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
19,545 lbs / 8,866 Kg = 182.4 x 6.0 " / 152 mm shells or 2.3 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 3.4 ft / 1.0 m
Roll period: 14.8 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.16

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.502
Length to Beam Ratio: 9.23 : 1
'Natural speed' for length: 28.12 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.00 ft / 6.71 m
- Forecastle (17 %): 22.00 ft / 6.71 m
- Mid (50 %): 22.00 ft / 6.71 m
- Quarterdeck (17 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 22.00 ft / 6.71 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.7 %
- Above water (accommodation/working, high = better): 155.2 %
Waterplane Area: 27,073 Square feet or 2,515 Square metres
Displacement factor (Displacement / loading): 131 %
Structure weight / hull surface area: 112 lbs/sq ft or 548 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.61
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

I think that will do very nicely.

Very nifty and comparable to the General Belgrano class in firepower and protection. Actually I'd expect both to be very similar in terms of layout and overall appearance.

You could either increase the belt armor or the turret armor. My personal preference would be to uparmor the guns, but the choice is yours.

On appearance, I suspect the question is is what layout is being used? Is it a Brooklyn/Takao type layout, with B turret raised? Is it a Mogami-type layout (as General Belgrano has), with C turret raised? Something else?

Here's the last destroyer design, its the one that Brock submitted with some very minor changes. If there is no issues with this, the Almirante Saldanha, or the Sao Paulo class AC, then they will be moved to the Future Projects file.

Margay II, Brazil Destroyer laid down 1936

Displacement:
2,104 t light; 2,223 t standard; 2,526 t normal; 2,769 t full load

Dimensions: Length overall / water x beam x draught
404.26 ft / 393.00 ft x 37.50 ft x 15.00 ft (normal load)
123.22 m / 119.79 m x 11.43 m x 4.57 m

Armament:
8 - 4.72" / 120 mm guns (4x2 guns), 52.72lbs / 23.92kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
10 - 1.46" / 37.0 mm guns (5x2 guns), 1.55lbs / 0.70kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 438 lbs / 198 kg
Shells per gun, main battery: 275
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 0.75" / 19 mm 1.00" / 25 mm

- Conning tower: 1.00" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 44,204 shp / 32,976 Kw = 34.00 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 547 tons

Complement:
177 - 231

Cost:
£1.469 million / $5.875 million

Distribution of weights at normal displacement:
Armament: 55 tons, 2.2 %
Armour: 27 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 23 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,136 tons, 44.9 %
Hull, fittings & equipment: 812 tons, 32.1 %
Fuel, ammunition & stores: 423 tons, 16.7 %
Miscellaneous weights: 75 tons, 3.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
825 lbs / 374 Kg = 15.7 x 4.7 " / 120 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 1.6 ft / 0.5 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.72
Seaboat quality (Average = 1.00): 1.25

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 10.48 : 1
'Natural speed' for length: 22.84 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 1.00 ft / 0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.00 ft / 6.71 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (50 %): 17.00 ft / 5.18 m
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 17.40 ft / 5.30 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166.4 %
- Above water (accommodation/working, high = better): 91.7 %
Waterplane Area: 9,415 Square feet or 875 Square metres
Displacement factor (Displacement / loading): 84 %
Structure weight / hull surface area: 41 lbs/sq ft or 200 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.41
- Overall: 0.59
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

Minas Gerais, Brazil Armoured Cruiser laid down 1937

Displacement:
18,844 t light; 19,798 t standard; 22,597 t normal; 24,836 t full load

Dimensions: Length overall / water x beam x draught
755.56 ft / 721.00 ft x 68.00 ft (Bulges 74.00 ft) x 27.10 ft (normal load)
230.30 m / 219.76 m x 20.73 m (Bulges 22.56 m) x 8.26 m

Armament:
6 - 12.01" / 305 mm guns (3x2 guns), 850.00lbs / 385.55kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on centreline, all aft, all raised mounts - superfiring
12 - 4.72" / 120 mm guns (4x3 guns), 52.72lbs / 23.91kg shells, 1937 Model
Breech loading guns in deck mounts with hoists
on side, evenly spread
16 - 1.38" / 35.0 mm guns (8x2 guns), 1.32lbs / 0.60kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
16 - 0.54" / 13.7 mm guns (8x2 guns), 0.08lbs / 0.04kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 5,860 lbs / 2,658 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7.50" / 191 mm 523.21 ft / 159.47 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 112 % of normal length

- Torpedo Bulkhead and Bulges:
1.00" / 25 mm 514.00 ft / 156.67 m 25.59 ft / 7.80 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.00" / 229 mm 5.00" / 127 mm 9.00" / 229 mm
2nd: 2.00" / 51 mm 1.00" / 25 mm -
3rd: 2.00" / 51 mm 1.00" / 25 mm -
4th: 1.00" / 25 mm 0.25" / 6 mm -
5th: 1.00" / 25 mm 0.25" / 6 mm -

- Armour deck: 3.00" / 76 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 130,740 shp / 97,532 Kw = 33.00 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 5,038 tons

Complement:
920 - 1,197

Cost:
£9.775 million / $39.099 million

Distribution of weights at normal displacement:
Armament: 744 tons, 3.3 %
Armour: 5,456 tons, 24.1 %
- Belts: 1,603 tons, 7.1 %
- Torpedo bulkhead: 487 tons, 2.2 %
- Armament: 1,344 tons, 5.9 %
- Armour Deck: 1,971 tons, 8.7 %
- Conning Tower: 52 tons, 0.2 %
Machinery: 3,624 tons, 16.0 %
Hull, fittings & equipment: 8,869 tons, 39.2 %
Fuel, ammunition & stores: 3,754 tons, 16.6 %
Miscellaneous weights: 150 tons, 0.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
31,268 lbs / 14,183 Kg = 36.1 x 12.0 " / 305 mm shells or 4.0 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 3.3 ft / 1.0 m
Roll period: 17.2 seconds
Steadiness - As gun platform (Average = 50 %): 62 %
- Recoil effect (Restricted arc if above 1.00): 0.87
Seaboat quality (Average = 1.00): 1.24

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.547
Length to Beam Ratio: 9.74 : 1
'Natural speed' for length: 30.55 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 50.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.00 ft / 8.84 m
- Forecastle (20 %): 26.00 ft / 7.92 m
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (15 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 24.94 ft / 7.60 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 111.6 %
- Above water (accommodation/working, high = better): 179.9 %
Waterplane Area: 35,520 Square feet or 3,300 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 144 lbs/sq ft or 706 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.53
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

This is the armoured cruiser design.

On these two, I expect you'll want to use a single calibre of medium AA: either 35mm or 37mm, not both.

On the Margay II, I'd trade the "good seaboat" rating for more speed (on the theory that you can always slow down, but if you don't have the horsepower, you can't speed up), but that's me.

Quoted

Originally posted by Hrolf Hakonson
On the Margay II, I'd trade the "good seaboat" rating for more speed (on the theory that you can always slow down, but if you don't have the horsepower, you can't speed up), but that's me.

There's no additional cross-sectional strength for increasing speed...

Once you reduce the freeboard that allows that "good seaboat" rating, there will be.

Mmm, like this.

Quoted

Margay II, Brazilian Destroyer laid down 1937

Displacement:
2,107 t light; 2,225 t standard; 2,526 t normal; 2,767 t full load

Dimensions: Length overall / water x beam x draught
403.26 ft / 393.00 ft x 37.50 ft x 15.00 ft (normal load)
122.91 m / 119.79 m x 11.43 m x 4.57 m

Armament:
8 - 4.72" / 120 mm guns (4x2 guns), 52.72lbs / 23.91kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
10 - 1.38" / 35.0 mm guns (5x2 guns), 1.31lbs / 0.59kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 435 lbs / 197 kg
Shells per gun, main battery: 275
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 0.75" / 19 mm 1.00" / 25 mm

- Conning tower: 1.00" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 49,784 shp / 37,139 Kw = 35.00 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 542 tons

Complement:
177 - 231

Cost:
£1.575 million / $6.301 million

Distribution of weights at normal displacement:
Armament: 54 tons, 2.2 %
Armour: 26 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 22 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,210 tons, 47.9 %
Hull, fittings & equipment: 741 tons, 29.3 %
Fuel, ammunition & stores: 420 tons, 16.6 %
Miscellaneous weights: 75 tons, 3.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
671 lbs / 305 Kg = 12.7 x 4.7 " / 120 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.6 ft / 0.5 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.60
Seaboat quality (Average = 1.00): 0.96

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 10.48 : 1
'Natural speed' for length: 22.84 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.00 ft / 6.71 m
- Forecastle (20 %): 15.25 ft / 4.65 m
- Mid (50 %): 15.25 ft / 4.65 m
- Quarterdeck (15 %): 15.25 ft / 4.65 m
- Stern: 15.25 ft / 4.65 m
- Average freeboard: 15.79 ft / 4.81 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 175.6 %
- Above water (accommodation/working, high = better): 82.3 %
Waterplane Area: 9,415 Square feet or 875 Square metres
Displacement factor (Displacement / loading): 77 %
Structure weight / hull surface area: 40 lbs/sq ft or 198 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 1.74
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

I'm not quite so enthusiastic about it, myself.

Something like that, yes. Some minor tweaking would probably get the seakeeping up to 1.00. Like I said, it's something _I_ would do, but that doesn't mean everyone would. I think DD's need speed to do their job, so I build fairly fast DDs. <shrug>

Yes, DDs do need speed to do their job. However, the Margay IIs are really only replacements for the originals lost during the War. The majority of the escorts for the battleline (Margays, Saggies, Almirantes) are only capable of 30.5 knots. This also, forces any future battleship Brazil might build to be in the 27 to 30 knot range, because their is little point in having the ship you are scouting for and escorting being faster than the escorts. Margay II will be a replacement class, likely of 5 DDs. The next destroyers will be built to escort the Scout Force, and be capable of 35 knots, and will be a class of 12. They won't get built until 1940 at the earliest.