Glorious French cruisers

[P3D]

Hm, the formulas I could look up in first approximation are valid only for 'wall hulled' ships. So I realized that the detailed stability calculations even on a 'brick hullform' would need about as much work as an upper undergraduate level Naval Architecture class project with a purpose-build code. And I don't have the time for that, esp. now.

[maddox]

At least I have 1 excuse for large bulges (note that Glorious France doesn't have modern ships with bulges), the pronounced tumblehome of the historical French Ships

[P3D]

I checked the few cross-sections I found on tumblehome predreadnoughts, and none of them has bulges - the main armored deck is not narrower that the beam  (or only by very small amount). So 'bulges' are not the way to sim tumblehome.

http://www.cityofart.net/bship/frameset6.html
http://www.cityofart.net/bship/jaureguiberry.html
http://www.cityofart.net/bship/suffren.html

[maddox]

In other words, the irl French tumblehome was just superstructure on a low armored box.

[P3D]

No. Superstructures are not adding strength to the hull, while decks running longitudinally along most of the ship do. Tumblehome hulls have reduced weight compared to a wall-sided hull but slightly lower structural strength*, but with naval architecture of the 1890s (and battleship vs. light ship build standards) the latter is not important.


*The structural strength here is the 'rigidity' of the structure, "second moment of inertia" in engineerspeak, denoted usually as I.

[maddox]

A potential successor to the Demarce IV cruisers?

Crotalus Maximus, French Heavy cruiser laid down 1920

Displacement:
   12.000 t light; 12.499 t standard; 14.336 t normal; 15.806 t full load

Dimensions: Length overall / water x beam x draught
   643,04 ft / 639,76 ft x 65,62 ft x 22,31 ft (normal load)
   196,00 m / 195,00 m x 20,00 m  x 6,80 m

Armament:
      9 - 7,68" / 195 mm guns (3x3 guns), 264,55lbs / 120,00kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 5,00" / 127 mm guns (4x2 guns), 55,00lbs / 24,95kg shells, 1918 Model
     Quick firing guns in deck mounts with hoists
     on side ends, evenly spread, 2 raised mounts - superfiring
      2 - 5,00" / 127 mm guns (1x2 guns), 55,00lbs / 24,95kg shells, 1920 Model
     Quick firing guns in a deck mount with hoist
     on centreline aft, all raised guns - superfiring
      6 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 2.940 lbs / 1.334 kg
   Shells per gun, main battery: 125
   6 - 24,0" / 609,6 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3,50" / 89 mm   430,24 ft / 131,14 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:   4,00" / 102 mm   2,00" / 51 mm      4,00" / 102 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:   0,50" / 13 mm   0,50" / 13 mm            -

   - Armour deck: 1,50" / 38 mm, Conning tower: 4,00" / 102 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 104.192 shp / 77.727 Kw = 32,00 kts
   Range 9.000nm at 16,00 kts
   Bunker at max displacement = 3.307 tons

Complement:
   654 - 851

Cost:
   £2,861 million / $11,444 million

Distribution of weights at normal displacement:
   Armament: 334 tons, 2,3%
   Armour: 2.032 tons, 14,2%
      - Belts: 751 tons, 5,2%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 428 tons, 3,0%
      - Armour Deck: 802 tons, 5,6%
      - Conning Tower: 51 tons, 0,4%
   Machinery: 3.643 tons, 25,4%
   Hull, fittings & equipment: 5.616 tons, 39,2%
   Fuel, ammunition & stores: 2.336 tons, 16,3%
   Miscellaneous weights: 375 tons, 2,6%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16.082 lbs / 7.295 Kg = 71,1 x 7,7 " / 195 mm shells or 1,7 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 3,3 ft / 1,0 m
   Roll period: 15,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,69
   Seaboat quality  (Average = 1.00): 1,22

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,536
   Length to Beam Ratio: 9,75 : 1
   'Natural speed' for length: 25,29 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): -8,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      27,89 ft / 8,50 m
      - Forecastle (21%):   22,15 ft / 6,75 m
      - Mid (55%):      22,15 ft / 6,75 m
      - Quarterdeck (12%):   22,15 ft / 6,75 m
      - Stern:      22,15 ft / 6,75 m
      - Average freeboard:   22,63 ft / 6,90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103,4%
      - Above water (accommodation/working, high = better): 162,5%
   Waterplane Area: 28.909 Square feet or 2.686 Square metres
   Displacement factor (Displacement / loading): 116%
   Structure weight / hull surface area: 119 lbs/sq ft or 582 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,50
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

250 ton FC
25 ton long range marconi
25 ton ERADe
40 ton torpedo's (2 fish per tube)
35 ton crew comfort

[TexanCowboy]

Personally, I would wait until, say, 1922 to lay them down, so you can spare the 150 tons by using the fire control for cruisers on them....but, if replacement is deemed nessasary because of the new war...

It's possible to get the same ship, on about 1,500 ton cheaper, with a little work...This is a quick rough draft based upon Wesworld French cruisers.

Paris, French Super-Cruiser laid down 1920

Displacement:
   10,619 t light; 11,098 t standard; 12,352 t normal; 13,356 t full load

Dimensions: Length overall / water x beam x draught
   617.00 ft / 617.00 ft x 65.00 ft x 22.00 ft (normal load)
   188.06 m / 188.06 m x 19.81 m  x 6.71 m

Armament:
      9 - 7.68" / 195 mm guns (3x3 guns), 226.49lbs / 102.74kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1920 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      2 - 5.00" / 127 mm guns (1x2 guns), 62.50lbs / 28.35kg shells, 1920 Model
     Quick firing guns in a deck mount with hoist
     on side
   Weight of broadside 2,663 lbs / 1,208 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.50" / 89 mm   453.00 ft / 138.07 m   12.00 ft / 3.66 m
   Ends:   Unarmoured
     Main Belt covers 113 % of normal length

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

   - Armour deck: 1.50" / 38 mm, Conning tower: 4.00" / 102 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 94,758 shp / 70,690 Kw = 32.00 kts
   Range 9,000nm at 14.00 kts
   Bunker at max displacement = 2,257 tons

Complement:
   585 - 761

Cost:
   £2.636 million / $10.543 million

Distribution of weights at normal displacement:
   Armament: 333 tons, 2.7 %
   Armour: 1,932 tons, 15.6 %
      - Belts: 780 tons, 6.3 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 371 tons, 3.0 %
      - Armour Deck: 735 tons, 5.9 %
      - Conning Tower: 46 tons, 0.4 %
   Machinery: 3,313 tons, 26.8 %
   Hull, fittings & equipment: 4,741 tons, 38.4 %
   Fuel, ammunition & stores: 1,733 tons, 14.0 %
   Miscellaneous weights: 300 tons, 2.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,614 lbs / 5,268 Kg = 51.3 x 7.7 " / 195 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 3.9 ft / 1.2 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.40
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.490
   Length to Beam Ratio: 9.49 : 1
   'Natural speed' for length: 24.84 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      27.32 ft / 8.33 m
      - Forecastle (20 %):   17.39 ft / 5.30 m
      - Mid (50 %):      17.39 ft / 5.30 m
      - Quarterdeck (15 %):   17.39 ft / 5.30 m
      - Stern:      17.39 ft / 5.30 m
      - Average freeboard:   18.18 ft / 5.54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110.7 %
      - Above water (accommodation/working, high = better): 149.9 %
   Waterplane Area: 26,480 Square feet or 2,460 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 116 lbs/sq ft or 566 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.21
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[maddox]

Not a good seakeeping ship, nopr a good gun platform with good stability.  I would ask you to look at the French ships that are in use.

Even the Leopards have a seakeeping rating above 1, and a steadiness above .7.

[Borys]

Ahoj!

A reasonable sized heavy cruiser, with reasonable armor, reasonable armament at a reasonable speed....

Siphonaptera

Sounds like some choice STD ...
Borys

[maddox]

Actualy Borys, Siphonaptera is just a flea.   You could see that too as an STD.

[TexanCowboy]

Well, if that's what you want...for 50 more tons, you can have

Paris, French Super-Cruiser laid down 1920

Displacement:
   10,673 t light; 11,154 t standard; 12,412 t normal; 13,419 t full load

Dimensions: Length overall / water x beam x draught
   620.00 ft / 620.00 ft x 65.00 ft x 22.00 ft (normal load)
   188.98 m / 188.98 m x 19.81 m  x 6.71 m

Armament:
      9 - 7.68" / 195 mm guns (3x3 guns), 226.49lbs / 102.73kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all aft, 1 raised mount aft - superfiring
      8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1920 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      2 - 5.00" / 127 mm guns (1x2 guns), 62.50lbs / 28.35kg shells, 1920 Model
     Quick firing guns in a deck mount with hoist
     on centreline forward
   Weight of broadside 2,663 lbs / 1,208 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.50" / 89 mm   445.00 ft / 135.64 m   13.00 ft / 3.96 m
   Ends:   Unarmoured
     Main Belt covers 110 % of normal length

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

   - Armour deck: 1.50" / 38 mm, Conning tower: 4.00" / 102 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 94,793 shp / 70,716 Kw = 32.00 kts
   Range 9,000nm at 14.00 kts
   Bunker at max displacement = 2,265 tons

Complement:
   587 - 764

Cost:
   £2.641 million / $10.563 million

Distribution of weights at normal displacement:
   Armament: 333 tons, 2.7 %
   Armour: 1,988 tons, 16.0 %
      - Belts: 833 tons, 6.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 371 tons, 3.0 %
      - Armour Deck: 738 tons, 5.9 %
      - Conning Tower: 46 tons, 0.4 %
   Machinery: 3,314 tons, 26.7 %
   Hull, fittings & equipment: 4,738 tons, 38.2 %
   Fuel, ammunition & stores: 1,739 tons, 14.0 %
   Miscellaneous weights: 300 tons, 2.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,005 lbs / 4,992 Kg = 48.6 x 7.7 " / 195 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 3.1 ft / 0.9 m
   Roll period: 15.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.53
   Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.490
   Length to Beam Ratio: 9.54 : 1
   'Natural speed' for length: 24.90 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      27.32 ft / 8.33 m
      - Forecastle (20 %):   17.39 ft / 5.30 m
      - Mid (50 %):      17.39 ft / 5.30 m
      - Quarterdeck (15 %):   17.39 ft / 5.30 m
      - Stern:      17.39 ft / 5.30 m
      - Average freeboard:   18.18 ft / 5.54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110.2 %
      - Above water (accommodation/working, high = better): 150.2 %
   Waterplane Area: 26,609 Square feet or 2,472 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 115 lbs/sq ft or 563 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.23
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

Still 1,000 ton cheaper, but with the seakeeping.

Paris, French Super-Cruiser laid down 1920

Displacement:
   11,076 t light; 11,565 t standard; 12,851 t normal; 13,880 t full load

Dimensions: Length overall / water x beam x draught
   625.00 ft / 625.00 ft x 64.70 ft x 22.70 ft (normal load)
   190.50 m / 190.50 m x 19.72 m  x 6.92 m

Armament:
      9 - 7.68" / 195 mm guns (3x3 guns), 226.49lbs / 102.73kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all aft, 1 raised mount aft - superfiring
      8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1920 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      2 - 5.00" / 127 mm guns (1x2 guns), 62.50lbs / 28.35kg shells, 1920 Model
     Quick firing guns in a deck mount with hoist
     on centreline forward
   Weight of broadside 2,663 lbs / 1,208 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.50" / 89 mm   440.00 ft / 134.11 m   12.00 ft / 3.66 m
   Ends:   Unarmoured
     Main Belt covers 108 % of normal length

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

   - Armour deck: 1.50" / 38 mm, Conning tower: 4.00" / 102 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 96,353 shp / 71,879 Kw = 32.00 kts
   Range 9,000nm at 14.00 kts
   Bunker at max displacement = 2,315 tons

Complement:
   603 - 784

Cost:
   £2.692 million / $10.768 million

Distribution of weights at normal displacement:
   Armament: 333 tons, 2.6 %
   Armour: 1,964 tons, 15.3 %
      - Belts: 762 tons, 5.9 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 415 tons, 3.2 %
      - Armour Deck: 741 tons, 5.8 %
      - Conning Tower: 47 tons, 0.4 %
   Machinery: 3,369 tons, 26.2 %
   Hull, fittings & equipment: 5,109 tons, 39.8 %
   Fuel, ammunition & stores: 1,775 tons, 13.8 %
   Miscellaneous weights: 300 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     13,027 lbs / 5,909 Kg = 57.5 x 7.7 " / 195 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 15.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.63
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.490
   Length to Beam Ratio: 9.66 : 1
   'Natural speed' for length: 25.00 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 0.00 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 %):   21.00 ft / 6.40 m
      - Mid (50 %):      21.00 ft / 6.40 m
      - Quarterdeck (15 %):   21.00 ft / 6.40 m
      - Stern:      21.00 ft / 6.40 m
      - Average freeboard:   21.64 ft / 6.60 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 107.8 %
      - Above water (accommodation/working, high = better): 177.1 %
   Waterplane Area: 26,700 Square feet or 2,481 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 117 lbs/sq ft or 572 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.54
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[maddox]

Lessons learned at The Battle of the Tadjoura Strait

Speed isn't armor.
Armor doesn't protect against torpedo's. Size does
Thinner armor doesn't protect.
1 hull with a lot of guns doesn't replace 2 hulls with an equal amount of guns. 
Torpedo's not launched are dead weight and waste of taxpayers money.

Demarce IIIc, French Protected cruiser laid down 1920

Displacement:
   5.000 t light; 5.182 t standard; 6.313 t normal; 7.218 t full load

Dimensions: Length overall / water x beam x draught
   557,74 ft / 554,46 ft x 46,42 ft x 15,09 ft (normal load)
   170,00 m / 169,00 m x 14,15 m  x 4,60 m

Armament:
      8 - 5,51" / 140 mm guns (4x2 guns), 92,59lbs / 42,00kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on centreline, evenly spread, 2 raised mounts
     Aft Main mounts separated by engine room
      8 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 753 lbs / 342 kg
   Shells per gun, main battery: 130
   8 - 24,0" / 609,6 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1,00" / 25 mm   360,40 ft / 109,85 m   8,00 ft / 2,44 m
   Ends:   Unarmoured
     Main Belt covers 100% of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   3,00" / 76 mm   1,00" / 25 mm      3,00" / 76 mm
   2nd:   0,50" / 13 mm   0,50" / 13 mm            -

   - Armour deck: 1,00" / 25 mm, Conning tower: 3,00" / 76 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 50.770 shp / 37.874 Kw = 30,00 kts
   Range 9.000nm at 16,00 kts
   Bunker at max displacement = 2.037 tons

Complement:
   353 - 460

Cost:
   £1,170 million / $4,682 million

Distribution of weights at normal displacement:
   Armament: 85 tons, 1,4%
   Armour: 537 tons, 8,5%
      - Belts: 118 tons, 1,9%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 58 tons, 0,9%
      - Armour Deck: 338 tons, 5,4%
      - Conning Tower: 22 tons, 0,3%
   Machinery: 1.775 tons, 28,1%
   Hull, fittings & equipment: 2.364 tons, 37,5%
   Fuel, ammunition & stores: 1.313 tons, 20,8%
   Miscellaneous weights: 239 tons, 3,8%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7.370 lbs / 3.343 Kg = 88,0 x 5,5 " / 140 mm shells or 1,1 torpedoes
   Stability (Unstable if below 1.00): 1,21
   Metacentric height 2,2 ft / 0,7 m
   Roll period: 13,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,47
   Seaboat quality  (Average = 1.00): 1,20

Hull form characteristics:
   Hull has low quarterdeck
   Block coefficient: 0,569
   Length to Beam Ratio: 11,94 : 1
   'Natural speed' for length: 23,55 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): -5,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22,97 ft / 7,00 m
      - Forecastle (23%):   16,90 ft / 5,15 m
      - Mid (55%):      16,73 ft / 5,10 m
      - Quarterdeck (13%):   9,84 ft / 3,00 m (16,73 ft / 5,10 m before break)
      - Stern:      9,84 ft / 3,00 m
      - Average freeboard:   16,48 ft / 5,02 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106,0%
      - Above water (accommodation/working, high = better): 119,2%
   Waterplane Area: 18.283 Square feet or 1.699 Square metres
   Displacement factor (Displacement / loading): 126%
   Structure weight / hull surface area: 80 lbs/sq ft or 388 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1,00
      - Longitudinal: 1,05
      - 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
   Good seaboat, rides out heavy weather easily

Emergency redesign of the Demarce IIIb's

Armor thinned and armament lessened to make a cheaper ship.

24 ton torpedo's 8*3 ton (no reloads carried)

100 ton firecontrol
25 ton Enhanced Radio Aural Detection equipment
25 ton long range marconi
25 ton ASW
30 ton 3 depth charge stern racks and 90 charges

[TexanCowboy]

Belt could cause tax-payers some issues.... :D

[maddox]

The belt is just a splinter shield over the engine room.  The magazines have their own armor.

[Jefgte]

...1 hull with a lot of guns doesn't replace 2 hulls with an equal amount of guns. 
...

1BB with 12x12" = 1BB with 6x12" + 1BB with 6x12"
same armor & speed.


sure ???  ???  ???