New OLD ship design...

[Carthaginian]

An 'ancient' design that would have been something that the Confederacy would have had in the beginning if I had been around that long. ;D Based vaguely on the historic H.M.S. Defense. Note that the insane 'quintuple' 1/2" mounts are actually 5-barreled Gatling guns.

Mississippi, Confederate States of America Ironclad, 1st Rate laid down 1866
Armoured Frigate (Broadside ironclad)

Displacement:
   5,225 t light; 5,551 t standard; 6,250 t normal; 6,809 t full load

Dimensions: Length overall / water x beam x draught
   290.00 ft / 280.00 ft x 55.00 ft x 24.00 ft (normal load)
   88.39 m / 85.34 m x 16.76 m  x 7.32 m

Armament:
      16 - 7.50" / 191 mm guns in single mounts, 150.00lbs / 68.04kg shells, 1866 Model
     Breech loading guns in broadside mounts
     on side, all amidships
     16 guns on gundeck (upper belt level) - Limited use in heavy seas
      20 - 0.50" / 12.7 mm guns (4x5 guns), 0.05lbs / 0.02kg shells, 1866 Model
     Breech loading guns in deck mounts
     on side ends, evenly spread
   Weight of broadside 2,401 lbs / 1,089 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.00" / 127 mm   200.00 ft / 60.96 m   10.00 ft / 3.05 m
   Ends:   2.50" / 64 mm     80.00 ft / 24.38 m   10.00 ft / 3.05 m
   Upper:   5.00" / 127 mm   160.00 ft / 48.77 m   15.00 ft / 4.57 m
     Main Belt covers 110 % of normal length

   - Armour deck: 2.00" / 51 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 1 shaft, 4,000 ihp / 2,984 Kw = 13.65 kts
   Range 2,400nm at 10.00 kts
   Bunker at max displacement = 1,259 tons (100% coal)

Complement:
   350 - 456

Cost:
   £0.560 million / $2.241 million

Distribution of weights at normal displacement:
   Armament: 270 tons, 4.3 %
   Armour: 1,474 tons, 23.6 %
      - Belts: 1,070 tons, 17.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 0 tons, 0.0 %
      - Armour Deck: 404 tons, 6.5 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1,075 tons, 17.2 %
   Hull, fittings & equipment: 2,306 tons, 36.9 %
   Fuel, ammunition & stores: 1,025 tons, 16.4 %
   Miscellaneous weights: 100 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,264 lbs / 2,388 Kg = 39.0 x 7.5 " / 191 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.33
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 12.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.30
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.592
   Length to Beam Ratio: 5.09 : 1
   'Natural speed' for length: 16.73 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 10.00 ft / 3.05 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.00 ft / 6.10 m
      - Forecastle (25 %):   20.00 ft / 6.10 m
      - Mid (50 %):      20.00 ft / 6.10 m
      - Quarterdeck (20 %):   20.00 ft / 6.10 m
      - Stern:      20.00 ft / 6.10 m
      - Average freeboard:   20.00 ft / 6.10 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.6 %
      - Above water (accommodation/working, high = better): 118.8 %
   Waterplane Area: 10,919 Square feet or 1,014 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 118 lbs/sq ft or 577 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 5.24
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Mississippi
Florida
Alabama