France 1870 restart

[KWorld]

Ah, ok, if the current misc weight is for sails, it should be above decks, and you should add some for the spar and torpedo.


Hmmmm.  Got to think about the TB/DD rules for 1870.....

[Jefgte]

Don't " hmmmm..."

I re SS with overall: 1.00

;)

[KWorld]

:)

The issue, of course, is that the current design rules all start at 1880, while we're starting at 1870.  That's why I raised the question over here: http://www.navalism.org/index.php/topic,6386.msg83187.html#msg83187, though that question was a little more wide-ranging.

[KWorld]

OK, minor tweaks to the Naval Technology rules, adding an 1865 tech level that covers turret ships, central-battery ships, and broadside ironclads, along with spar-torpedo vessels.

[Jefgte]

I have re SS the BBs to have a 12kts sails speed.

Here are the 6x274 & 6x240

BB-6x274, France BB laid down 1870

Displacement:
   6 300 t light; 6 602 t standard; 6 969 t normal; 7 263 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (301.84 ft / 295.28 ft) x 52.49 ft (Bulges 59.06 ft) x (22.35 / 23.23 ft)
   (92.00 m / 90.00 m) x 16.00 m (Bulges 18.00 m)  x (6.81 / 7.08 m)

Armament:
      2 - 10.79" / 274 mm 20.0 cal guns - 470.75lbs / 213.53kg shells, 75 per gun
     Breech loading guns in casemate mounts, 1870 Model
     2 x Single mounts on centreline ends, evenly spread
      4 - 10.79" / 274 mm 20.0 cal guns - 470.75lbs / 213.53kg shells, 75 per gun
     Breech loading guns in casemate mounts, 1870 Model
     4 x Single mounts on side ends, evenly spread
      4 - 7.64" / 194 mm 20.0 cal guns - 167.09lbs / 75.79kg shells, 120 per gun
     Breech loading guns in casemate mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 - 1.85" / 47.0 mm 45.0 cal guns - 2.67lbs / 1.21kg shells, 150 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on centreline, aft deck forward
      4 raised mounts
      4 - 0.51" / 13.0 mm 45.0 cal guns - 0.07lbs / 0.03kg shells, 1 000 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 3 504 lbs / 1 589 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   196.85 ft / 60.00 m   7.87 ft / 2.40 m
   Ends:   7.87" / 200 mm     98.43 ft / 30.00 m   7.87 ft / 2.40 m
   Upper:   5.91" / 150 mm   196.85 ft / 60.00 m   11.81 ft / 3.60 m
     Main Belt covers 103 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.94" / 100 mm         -         7.87" / 200 mm
   2nd:   3.94" / 100 mm         -               -
   3rd:   1.97" / 50 mm         -               -
   4th:   0.39" / 10 mm         -               -
   5th:   0.39" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 4 546 ihp / 3 391 Kw = 14.00 kts
   Range 3 000nm at 7.00 kts
   Bunker at max displacement = 660 tons (100% coal)

Complement:
   380 - 495

Cost:
   £0.450 million / $1.799 million

Distribution of weights at normal displacement:
   Armament: 199 tons, 2.8 %
      - Guns: 199 tons, 2.8 %
   Armour: 2 138 tons, 30.7 %
      - Belts: 1 648 tons, 23.6 %
      - Armament: 101 tons, 1.5 %
      - Armour Deck: 327 tons, 4.7 %
      - Conning Tower: 62 tons, 0.9 %
   Machinery: 1 114 tons, 16.0 %
   Hull, fittings & equipment: 2 261 tons, 32.4 %
   Fuel, ammunition & stores: 670 tons, 9.6 %
   Miscellaneous weights: 588 tons, 8.4 %
      - Above deck: 588 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7 435 lbs / 3 372 Kg = 16.9 x 10.8 " / 274 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 2.9 ft / 0.9 m
   Roll period: 14.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has low forecastle, low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.626 / 0.628
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 17.18 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -30.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   16.00 %,  13.78 ft / 4.20 m,  11.81 ft / 3.60 m
      - Forward deck:   32.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Aft deck:   36.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Quarter deck:   16.00 %,  11.81 ft / 3.60 m,  11.81 ft / 3.60 m
      - Average freeboard:      14.61 ft / 4.45 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 64.2 %
      - Above water (accommodation/working, high = better): 91.7 %
   Waterplane Area: 11 614 Square feet or 1 079 Square metres
   Displacement factor (Displacement / loading): 123 %
   Structure weight / hull surface area: 125 lbs/sq ft or 612 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.89
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

saisl speed:17.18kts:2=8.59+3.43kts=12.02kts
--
BB-6x240, France BB laid down 1870

Displacement:
   4 760 t light; 4 991 t standard; 5 299 t normal; 5 546 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (285.43 ft / 278.87 ft) x 45.93 ft (Bulges 52.49 ft) x (20.57 / 21.48 ft)
   (87.00 m / 85.00 m) x 14.00 m (Bulges 16.00 m)  x (6.27 / 6.55 m)

Armament:
      2 - 9.45" / 240 mm 20.0 cal guns - 316.36lbs / 143.50kg shells, 75 per gun
     Breech loading guns in casemate mounts, 1870 Model
     2 x Single mounts on centreline ends, evenly spread
      4 - 9.45" / 240 mm 20.0 cal guns - 316.36lbs / 143.50kg shells, 75 per gun
     Breech loading guns in casemate mounts, 1870 Model
     4 x Single mounts on side ends, evenly spread
      4 - 7.64" / 194 mm 20.0 cal guns - 167.09lbs / 75.79kg shells, 120 per gun
     Breech loading guns in casemate mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 - 1.85" / 47.0 mm 45.0 cal guns - 2.67lbs / 1.21kg shells, 150 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on centreline, aft deck forward
      4 raised mounts
      4 - 0.51" / 13.0 mm 45.0 cal guns - 0.07lbs / 0.03kg shells, 1 000 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 2 577 lbs / 1 169 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   180.45 ft / 55.00 m   7.87 ft / 2.40 m
   Ends:   5.91" / 150 mm     65.62 ft / 20.00 m   7.87 ft / 2.40 m
     32.81 ft / 10.00 m Unarmoured ends
   Upper:   5.91" / 150 mm   164.04 ft / 50.00 m   11.81 ft / 3.60 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.94" / 100 mm         -         7.87" / 200 mm
   2nd:   3.94" / 100 mm         -               -
   3rd:   1.97" / 50 mm         -               -
   4th:   0.39" / 10 mm         -               -
   5th:   0.39" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.38" / 35 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 3 874 ihp / 2 890 Kw = 14.00 kts
   Range 3 000nm at 7.00 kts
   Bunker at max displacement = 555 tons (100% coal)

Complement:
   309 - 403

Cost:
   £0.354 million / $1.414 million

Distribution of weights at normal displacement:
   Armament: 167 tons, 3.1 %
      - Guns: 167 tons, 3.1 %
   Armour: 1 500 tons, 28.3 %
      - Belts: 1 123 tons, 21.2 %
      - Armament: 93 tons, 1.8 %
      - Armour Deck: 233 tons, 4.4 %
      - Conning Tower: 52 tons, 1.0 %
   Machinery: 950 tons, 17.9 %
   Hull, fittings & equipment: 1 684 tons, 31.8 %
   Fuel, ammunition & stores: 539 tons, 10.2 %
   Miscellaneous weights: 460 tons, 8.7 %
      - Above deck: 460 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4 860 lbs / 2 204 Kg = 16.5 x 9.4 " / 240 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 2.2 ft / 0.7 m
   Roll period: 14.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.616 / 0.617
   Length to Beam Ratio: 5.31 : 1
   'Natural speed' for length: 16.70 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -30.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   16.00 %,  17.06 ft / 5.20 m,  17.06 ft / 5.20 m
      - Forward deck:   32.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Aft deck:   36.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   16.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      13.75 ft / 4.19 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 70.1 %
      - Above water (accommodation/working, high = better): 76.9 %
   Waterplane Area: 9 509 Square feet or 883 Square metres
   Displacement factor (Displacement / loading): 121 %
   Structure weight / hull surface area: 111 lbs/sq ft or 543 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.85
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

sails speed:16.7kts:2=8.35kts+3.7kts=12.05kts

[KWorld]

The question I'd have with these two is on the centerline casemate mounts: given that these ships have masts and rigging, a centerline casemate isn't going to have very good arcs at all.  This might be a time for a tumblehome central battery arrangement, if you're wanting to have some end-on fire capability.

[Jefgte]

...a centerline casemate isn't going to have very good arcs at all

These are Centerline ends => bow & stern or forecastel & quarterdeck position.

Jef  ;)

[Jefgte]

Here are the 2470t "Frégate Cuirassée" (8 ships) & the 1475t "Cannonière Cuirassée" (16 ships)
Recalculate for 12kts sails speed.

AGB, France 2x240+6x194+4x47+4x13 laid down 1870

Displacement:
   2 470 t light; 2 613 t standard; 2 821 t normal; 2 987 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (242.78 ft / 236.22 ft) x 32.81 ft (Bulges 41.01 ft) x (16.28 / 17.28 ft)
   (74.00 m / 72.00 m) x 10.00 m (Bulges 12.50 m)  x (4.96 / 5.27 m)

Armament:
      2 - 9.45" / 240 mm 20.0 cal guns - 316.36lbs / 143.50kg shells, 80 per gun
     Breech loading guns in casemate mounts, 1870 Model
     2 x Single mounts on centreline ends, evenly spread
      6 - 7.64" / 194 mm 30.0 cal guns - 171.81lbs / 77.93kg shells, 100 per gun
     Breech loading guns in casemate mounts, 1870 Model
     6 x Single mounts on sides, evenly spread
      4 - 1.85" / 47.0 mm 45.0 cal guns - 2.67lbs / 1.21kg shells, 250 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 - 0.51" / 13.0 mm 45.0 cal guns - 0.07lbs / 0.03kg shells, 1 000 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 1 674 lbs / 760 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   157.48 ft / 48.00 m   7.87 ft / 2.40 m
   Ends:   1.57" / 40 mm     39.37 ft / 12.00 m   7.22 ft / 2.20 m
     39.37 ft / 12.00 m Unarmoured ends
     Main Belt covers 103 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3.94" / 100 mm         -         1.57" / 40 mm
   2nd:   1.57" / 40 mm         -         1.18" / 30 mm
   4th:   0.39" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.38" / 35 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 2 756 ihp / 2 056 Kw = 14.00 kts
   Range 3 000nm at 7.00 kts
   Bunker at max displacement = 373 tons (100% coal)

Complement:
   193 - 251

Cost:
   £0.227 million / $0.908 million

Distribution of weights at normal displacement:
   Armament: 143 tons, 5.1 %
      - Guns: 143 tons, 5.1 %
   Armour: 535 tons, 19.0 %
      - Belts: 330 tons, 11.7 %
      - Armament: 46 tons, 1.6 %
      - Armour Deck: 142 tons, 5.0 %
      - Conning Tower: 17 tons, 0.6 %
   Machinery: 676 tons, 23.9 %
   Hull, fittings & equipment: 852 tons, 30.2 %
   Fuel, ammunition & stores: 351 tons, 12.4 %
   Miscellaneous weights: 265 tons, 9.4 %
      - Above deck: 265 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1 883 lbs / 854 Kg = 6.4 x 9.4 " / 240 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 14.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0.52
   Seaboat quality  (Average = 1.00): 1.55

Hull form characteristics:
   Hull has low forecastle, low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.626 / 0.624
   Length to Beam Ratio: 5.76 : 1
   'Natural speed' for length: 15.37 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -30.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   16.00 %,  9.19 ft / 2.80 m,  6.56 ft / 2.00 m
      - Forward deck:   32.00 %,  10.17 ft / 3.10 m,  10.17 ft / 3.10 m
      - Aft deck:   37.00 %,  10.17 ft / 3.10 m,  10.17 ft / 3.10 m
      - Quarter deck:   15.00 %,  6.56 ft / 2.00 m,  6.56 ft / 2.00 m
      - Average freeboard:      9.22 ft / 2.81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 95.1 %
      - Above water (accommodation/working, high = better): 58.3 %
   Waterplane Area: 5 807 Square feet or 539 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 92 lbs/sq ft or 451 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.27
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc Weight: 9.5% - 264t
Natural speed is 15.37kts.
5% of the ship Normal Displacement (142t) give a speed of 15.37kts:2= 7.68kts.
Plus an additionnal of 4.5%
Speed under sails is 7.68+4.4=12.08kts

--
69m, France 4x194+3x164+4x47+4x13 laid down 1870

Displacement:
   1 475 t light; 1 582 t standard; 1 737 t normal; 1 860 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (226.38 ft / 219.82 ft) x 22.97 ft (Bulges 31.50 ft) x (14.39 / 15.55 ft)
   (69.00 m / 67.00 m) x 7.00 m (Bulges 9.60 m)  x (4.39 / 4.74 m)

Armament:
      4 - 7.64" / 194 mm 20.0 cal guns - 167.09lbs / 75.79kg shells, 120 per gun
     Breech loading guns in casemate mounts, 1870 Model
     4 x Single mounts on sides, forward deck aft
      2 - 6.46" / 164 mm 30.0 cal guns - 103.79lbs / 47.08kg shells, 150 per gun
     Breech loading guns in casemate mounts, 1870 Model
     2 x Single mounts on sides, forward deck forward
      1 - 6.46" / 164 mm 30.0 cal gun - 103.79lbs / 47.08kg shells, 150 per gun
     Breech loading gun in casemate mount, 1870 Model
     1 x Single mount on centreline, aft deck aft
      4 - 1.85" / 47.0 mm 45.0 cal guns - 2.67lbs / 1.21kg shells, 250 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 - 0.51" / 13.0 mm 45.0 cal guns - 0.07lbs / 0.03kg shells, 1 000 per gun
     Breech loading guns in deck mounts, 1870 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 991 lbs / 449 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.57" / 40 mm   167.32 ft / 51.00 m   6.56 ft / 2.00 m
   Ends:   Unarmoured
     Main Belt covers 117 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.57" / 40 mm         -         1.57" / 40 mm
   2nd:   1.57" / 40 mm         -         1.18" / 30 mm
   4th:   0.39" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 1.57" / 40 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 2 045 ihp / 1 526 Kw = 14.00 kts
   Range 3 000nm at 7.00 kts
   Bunker at max displacement = 278 tons (100% coal)

Complement:
   133 - 174

Cost:
   £0.146 million / $0.585 million

Distribution of weights at normal displacement:
   Armament: 76 tons, 4.4 %
      - Guns: 76 tons, 4.4 %
   Armour: 201 tons, 11.6 %
      - Belts: 70 tons, 4.0 %
      - Armament: 25 tons, 1.4 %
      - Armour Deck: 101 tons, 5.8 %
      - Conning Tower: 5 tons, 0.3 %
   Machinery: 501 tons, 28.9 %
   Hull, fittings & equipment: 531 tons, 30.6 %
   Fuel, ammunition & stores: 261 tons, 15.1 %
   Miscellaneous weights: 166 tons, 9.6 %
      - Above deck: 166 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     797 lbs / 362 Kg = 5.1 x 7.6 " / 194 mm shells or 0.5 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 15.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 89 %
         - Recoil effect (Restricted arc if above 1.00): 0.77
   Seaboat quality  (Average = 1.00): 1.78

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.610 / 0.605
   Length to Beam Ratio: 6.98 : 1
   'Natural speed' for length: 14.83 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -30.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   18.00 %,  13.12 ft / 4.00 m,  11.81 ft / 3.60 m
      - Forward deck:   32.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Aft deck:   32.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Quarter deck:   18.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Average freeboard:      8.68 ft / 2.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110.0 %
      - Above water (accommodation/working, high = better): 42.0 %
   Waterplane Area: 3 727 Square feet or 346 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 73 lbs/sq ft or 358 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.33
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Extremely poor accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc weight: 9.6% - 166t
Half natural speed: 7.4kts
Saisl Speed: 7.4kts + 4.6kts = 12kts

[KWorld]

...a centerline casemate isn't going to have very good arcs at all

These are Centerline ends => bow & stern or forecastel & quarterdeck position.

Jef  ;)

Centerline ends normally means that they're at the fore and aft ends of the main deck, SS doesn't put them on the forecastle or the quarterdeck.  In the case of the ship with the 274s, that puts her bow gun 16% aft of the bow.  Looking at the 1869 Richelieu, probably the best way to sim this sort of thing (chase guns for the sailing period) will be to use below-decks casemates or broadside mounts and note that they're chase guns in the notes section of the design.

[KWorld]

On the Frégate Cuirassée, I assume the intent is for the 240s to be chase guns, with the 194s on the broadside.  Are you sure, though, that you want to mount the heaviest guns on the vessels as chase guns?

[Jefgte]

Have a look here:

http://forummarine.forumactif.com/t5520p45-la-marine-nationnale-de-1861-a

on the 1872 Infatigable class

That is the disposition adopted for the fore & aft cupola barbettes.


Jef  ;)

[KWorld]

Ah, OK.  Looks like what you're looking for on the fore and aft mounts on THIS ship is a barbette mount, rather than a casemate.  Isn't it a little bit too early for covered barbettes, though?

[Jefgte]

The drawing is for the disposition of the fore & aft casemate.
If we could have barbette, no problemo to have casemate in the same place.

Jef  ;)

[KWorld]

Installing a casemate's not the problem, it's really more that casemates' have limited arcs and mounting them fore or aft at this period, on a ship with sails, results in a limited arc of fire.  An open barbette mounting would be fine as far as I'm concerned, though.

[Jefgte]

For boardside guns installation, casemate, citadel, it's difficult to have more than 60° (30° fore & 30° aft)
With great French tumblehome, 100° is the curent number.
1870 designs had small tumblehome. Wait 1874-75 to have great thumblehome.

For centerline, fore & aft, have more than 120° is difficult (60° each side)
Hmmmm, A top design study could be interresting...

Jef  ;)