WesWorld

Marina Imperial
1934 First Quarter Report
1 January-31 March

A. Factories
4/7 factories = 4000t of material + 584t stockpiled = 4584t available
996t are used, and 1100t transferred, leaving a stockpile of 988t.

1/7 factories (committed) = 0.1 infrastructure pts +
2/7 factories (flexible) = 0.2 pts = 0.3 pts available

B. Infrastructure Development

Continued work on upgrade of Type 0 Dock at Macapa to Type 1
0.3 points added - 0.1 needed to complete

C. Naval Development and Construction

at Rio de Janeiro:
S2: idle
S1: idle
S1: idle
S1: DD-23 constructing, receives 498t, balance 996t
S1: idle
D3: CL Sagitério laid down 15 January, receives 1500t, balance 8424t
D3: idle

at Macapa:
S1: idle
S1: idle
S1: idle
S1: DD-24 constructing, receives 498t, balance 996t
S0: idle
D0: *upgrading*
D0: idle

at Manaus:
S0: idle
S0: idle
D0: idle
D0: idle

Commercial shipyards:
idle

D. Transactions

Philippines:
BC-2 Recife delivery accepted

Japan:
1100t license fees

E. Other Notes

Ships laid down this quarter: One Sagitério-class light cruiser

Destroyers Ocelot, Felis complete shakedown cruises

F. Scrappage Report

none

G. Updated Order of Battle, 31 March 1934

Note: completed (under repair/refit) + under construction

Battleships 2(0)+0
Coastal Battleships 0(0)+0
Battlecruisers 2(0)+0
Light Cruisers 4(0)+1
Destroyers 22(0)+2
Submarines 9(0)+0
Gunboats 5(0)+0
Minelayers 1(0)+0
Submarine Tender 1(0)+0
Collier 1(0)+0
Training Ship 1(0)+0

Swampy, the next three ships in the new cruiser class would have been named Esgrimista (swordsman), Piqueiro (pikeman), and Mosqueteiro (musketeer.) I'll leave it up to you which you use and in what order.

MIBN Sagitério, Empire of Brazil Light Cruiser laid down 1934



Displacement:
9,924 t light; 10,322 t standard; 11,518 t normal; 12,474 t full load

Dimensions: Length overall / water x beam x draught
610.37 ft / 600.00 ft x 68.60 ft x 20.75 ft (normal load)
186.04 m / 182.88 m x 20.91 m x 6.32 m

Armament:
9 - 6.00" / 152 mm guns (3x3 guns), 108.00lbs / 48.99kg shells, 1934 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.72" / 120 mm guns (4x2 guns), 52.72lbs / 23.92kg shells, 1934 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.32lbs / 0.60kg shells, 1934 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.54" / 13.7 mm guns (4x2 guns), 0.08lbs / 0.04kg shells, 1934 Model
Breech loading guns in deck mounts
on side, evenly spread

Weight of broadside 1,405 lbs / 637 kg
Shells per gun, main battery: 200

8 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 400.00 ft / 121.92 m 12.00 ft / 3.66 m
Ends: Unarmoured
Main Belt covers 103 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 3.00" / 76 mm 5.00" / 127 mm
2nd: 2.00" / 51 mm - -
3rd: 1.00" / 25 mm - -

- Armour deck: 4.00" / 102 mm, Conning tower: 2.00" / 51 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 66,000 shp / 49,236 Kw = 30.56 kts
Range 15,000nm at 12.00 kts (Bunkerage = 2,153 tons)

Complement:
555 - 722

Cost:
£3.734 million / $14.937 million

Distribution of weights at normal displacement:
Armament: 176 tons, 1.5 %
Armour: 3,270 tons, 28.4 %
- Belts: 804 tons, 7.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 387 tons, 3.4 %
- Armour Deck: 2,057 tons, 17.9 %
- Conning Tower: 22 tons, 0.2 %
Machinery: 1,899 tons, 16.5 %
Hull, fittings & equipment: 4,380 tons, 38.0 %
Fuel, ammunition & stores: 1,593 tons, 13.8 %
Miscellaneous weights: 200 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21,774 lbs / 9,876 Kg = 201.6 x 6.0 " / 152 mm shells or 2.8 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 3.9 ft / 1.2 m
Roll period: 14.6 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.24
Seaboat quality (Average = 1.00): 1.29

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.472
Length to Beam Ratio: 8.75 : 1
'Natural speed' for length: 28.36 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.50 ft / 8.38 m
- Forecastle (17 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m
- Quarterdeck (17 %): 20.00 ft / 6.10 m
- Stern: 20.00 ft / 6.10 m
- Average freeboard: 20.51 ft / 6.25 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 68.5 %
- Above water (accommodation/working, high = better): 165.2 %
Waterplane Area: 27,798 Square feet or 2,582 Square metres
Displacement factor (Displacement / loading): 133 %
Structure weight / hull surface area: 105 lbs/sq ft or 515 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.43
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

That is one heck of an armored deck. No wonder the Japanese won, Mogami is much faster, and better armed on pretty much the same tonnage.

Nice picture.

The ship itself has good at-sea behavior, but the deck armor is AWFULLY high for a ship of this size, and I'd want a bit more speed in my light cruisers. So I'd recommend trading some of the weight in deck armor for bigger boilers and turbines.

Well it's the first indiginous design for a vessel of this size, so there's likely to be a few..."oddities".

That's one reason the "split purchase" was arranged; with two of each type, the engineers can evalulate each and learn for the next design.

She lacks.....SCUTTLES!!!!

(...and thanks for introducing a cruiser design with a l:b ratio BELOW 10:1....)

Indeed. She should be scuttled.

Quoted

Originally posted by The Rock Doctor
Indeed. She should be scuttled.

Am working on it!

Quoted

Originally posted by Hrolf Hakonson
Nice picture.

The ship itself has good at-sea behavior, but the deck armor is AWFULLY high for a ship of this size, and I'd want a bit more speed in my light cruisers. So I'd recommend trading some of the weight in deck armor for bigger boilers and turbines.

The key word here being your cruisers. When I designed this ship it was with being able to guard the new battlecruisers against destroyers doing torpedo runs. That meant surviving in the middle of a battle line engagement.

Quoted

Originally posted by Fyrwulf

Quoted

Originally posted by Hrolf Hakonson
Nice picture.

The ship itself has good at-sea behavior, but the deck armor is AWFULLY high for a ship of this size, and I'd want a bit more speed in my light cruisers. So I'd recommend trading some of the weight in deck armor for bigger boilers and turbines.

The key word here being your cruisers. When I designed this ship it was with being able to guard the new battlecruisers against destroyers doing torpedo runs. That meant surviving in the middle of a battle line engagement.

A valid point.

However, if the ship is under fire from capital ships, the belt armor is too light relative to the deck, unless Brazil is planning to fight countries with quite low velocity shells. If the battlelines are 25,000 yards apart and the Brazillian CLs are 5,000 yards in front of the battleline, that means they're at ranges of 24,000 to 20,000 yards from the enemy battleline. At those ranges, few shells (other than perhaps French 15"/40s) will penetrate much more than 76mm of deck armor, while most can penetrate 4" belt armor without a problem.

Well, the idea isn't to survive main gun fire from an enemy battle line, it's to survive fire from the massive secondary and tertiary armaments of the battle line.

Those won't penetrate 2.5" deck armor at any range they can reach, assuming 6" guns or less. Even 8" guns will have a hard time penetrating 3" deck armor at ranges under 24,000 yards.

*shrugs* Well, I've already told Swampy he's free to modify the design as he likes.