Future Ottoman Mini-AC?

[Alikchi]

An 8000-ton armoured cruiser carrying six 200mm guns at 21.5 knots. Relatively cheap but still capable of knocking holes in PCs from range. Plus heavy armour. Useful for escorting the battlefleet (probably about as good as larger ACs in this role) and perhaps independent operations.

I'm thinking of building four or even six of these and using them as station flagships in the Red Sea, Persian Gulf, etc. However I may wait to get better engine tech.

8000tonner, Ottoman armoured cruiser laid down 1907 (Engine 1905)

Displacement:
   7,664 t light; 7,991 t standard; 9,165 t normal; 10,104 t full load

Dimensions: Length overall / water x beam x draught
   410.11 ft / 410.11 ft x 59.06 ft x 23.95 ft (normal load)
   125.00 m / 125.00 m x 18.00 m  x 7.30 m

Armament:
      6 - 7.87" / 200 mm guns (3x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      10 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1907 Model
     Quick firing guns in casemate mounts
     on side, all forward
      6 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1907 Model
     Quick firing guns in deck mounts
     on side, evenly spread, 4 raised mounts
      10 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread, 6 raised mounts
   Weight of broadside 2,020 lbs / 916 kg
   Shells per gun, main battery: 120
   2 - 15.7" / 400 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.84" / 250 mm   377.30 ft / 115.00 m   9.84 ft / 3.00 m
   Ends:   5.91" / 150 mm     26.25 ft / 8.00 m   9.84 ft / 3.00 m
     6.56 ft / 2.00 m Unarmoured ends
   Upper:   4.72" / 120 mm   262.47 ft / 80.00 m   6.56 ft / 2.00 m
     Main Belt covers 142 % of normal length

   - Torpedo Bulkhead:
      0.98" / 25 mm   262.47 ft / 80.00 m   21.33 ft / 6.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   5.91" / 150 mm      7.87" / 200 mm
   2nd:   2.95" / 75 mm   1.97" / 50 mm      2.95" / 75 mm
   3rd:   0.59" / 15 mm         -               -
   4th:   0.20" / 5 mm         -               -

   - Armour deck: 1.18" / 30 mm, Conning tower: 9.84" / 250 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 20,000 shp / 14,920 Kw = 21.47 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 2,113 tons (100% coal)

Complement:
   467 - 608

Cost:
   £0.715 million / $2.859 million

Distribution of weights at normal displacement:
   Armament: 254 tons, 2.8 %
   Armour: 3,102 tons, 33.8 %
      - Belts: 1,871 tons, 20.4 %
      - Torpedo bulkhead: 204 tons, 2.2 %
      - Armament: 563 tons, 6.1 %
      - Armour Deck: 370 tons, 4.0 %
      - Conning Tower: 93 tons, 1.0 %
   Machinery: 1,667 tons, 18.2 %
   Hull, fittings & equipment: 2,592 tons, 28.3 %
   Fuel, ammunition & stores: 1,501 tons, 16.4 %
   Miscellaneous weights: 50 tons, 0.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,214 lbs / 4,633 Kg = 41.8 x 7.9 " / 200 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 2.8 ft / 0.9 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.40
   Seaboat quality  (Average = 1.00): 1.28

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.553
   Length to Beam Ratio: 6.94 : 1
   'Natural speed' for length: 20.25 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   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:      22.97 ft / 7.00 m
      - Forecastle (20 %):   14.44 ft / 4.40 m
      - Mid (50 %):      14.44 ft / 4.40 m
      - Quarterdeck (15 %):   14.44 ft / 4.40 m
      - Stern:      14.44 ft / 4.40 m
      - Average freeboard:   15.12 ft / 4.61 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 126.2 %
      - Above water (accommodation/working, high = better): 99.8 %
   Waterplane Area: 16,950 Square feet or 1,575 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 98 lbs/sq ft or 477 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.81
      - Overall: 1.00
   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

[Korpen]

My verdict would be "over-armoured and undergunned".
Remember that untill around 1913 no-one will have capped AP shells, so 25cm of armour is more battleships-scale then anything else, a 25cm plate should be able to stop or scatter a 30cm shell at 8km (extreame range).
So i would mount more guns to make sure that you land hits on PC;s as the 10cm guns are somewhat lacking in destructive power against the large PCs we have around here.

[Borys]

Ahoj!
I would say too slow. Ottoman ships can trade range for speed, IMO.

Borys

[maddox]

French ships have 6000 Nm standard range.

Reducing range to 4000Nm would give this Mini AC a grand 1000 tons extra to put into weapons or speed.

[swamphen]

Not bad, but I'd wonder if those guns will fit on such a short hull...

[Korpen]

French ships have 6000 Nm standard range.

Reducing range to 4000Nm would give this Mini AC a grand 1000 tons extra to put into weapons or speed.

He cannot increase speed due to the rules about shp, the only way for him to get a faster ship is to use  reciprocating engines, and that will kill any weight savings.
And decreasing the range will no really give a lot more weight for guns or speed, as we use light displacement for everything, only a fraction of the weight of the fuel affects the ship.

[Carthaginian]

I have a similar ship, Alikchi, that is about to slide off the ways- though slightly more heavily armed with a 8 x 7.5" gun broadside. They are to be my new 'armored cruisers' in the Gulf/Caribbean.

[maddox]

French ships have 6000 Nm standard range.

Reducing range to 4000Nm would give this Mini AC a grand 1000 tons extra to put into weapons or speed.

He cannot increase speed due to the rules about shp, the only way for him to get a faster ship is to use  reciprocating engines, and that will kill any weight savings.
And decreasing the range will no really give a lot more weight for guns or speed, as we use light displacement for everything, only a fraction of the weight of the fuel affects the ship.

It is, true on the speed, but a 1000 tons gives 2 main gun turrets and all the armor needed. Or a complete secundairy battery.

[Korpen]

It is, true on the speed, but a 1000 tons gives 2 main gun turrets and all the armor needed. Or a complete secundairy battery.

1000 ton might give you that, but cutting the range to 4000nm will not give you 1000t ton to play with, it gives you around 150-200 ton to play with, and only around 50 if you keep the engines at 20k hp
Unless of course you make the ship larger, and increase its BP cost.

[Alikchi]

All of these criticisms are valid, and I'm not sure what to do with the design.

I'm going to drop the armour to 200mm. Range will go down to 6000nm, the range of my new BBs - I know that the Ottoman Navy is essentially coastal, but methinks these could be useful as raiders in, for example, the Indian Ocean, and it's a long journey from Gaza to Kuwait.

Long story short - I don't think I'll build anything until I get better engine tech.

Here is a result - this ship has twice the firepower at the same speed with slightly reduced range and armour.

8500tonner, Ottoman armoured cruiser laid down 1907 (Engine 1905)

Displacement:
   8,504 t light; 8,933 t standard; 9,879 t normal; 10,636 t full load

Dimensions: Length overall / water x beam x draught
   449.48 ft / 449.48 ft x 58.40 ft x 23.95 ft (normal load)
   137.00 m / 137.00 m x 17.80 m  x 7.30 m

Armament:
      8 - 7.87" / 200 mm guns (4x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 7.87" / 200 mm guns (2x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on side, all amidships
      10 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1907 Model
     Quick firing guns in casemate mounts
     on side, all forward
      10 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread, 6 raised mounts
   Weight of broadside 3,264 lbs / 1,480 kg
   Shells per gun, main battery: 120
   2 - 15.7" / 400 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   426.51 ft / 130.00 m   9.84 ft / 3.00 m
   Ends:   3.94" / 100 mm     0.00 ft / 0.00 m   9.84 ft / 3.00 m
     22.97 ft / 7.00 m Unarmoured ends
   Upper:   4.72" / 120 mm   262.47 ft / 80.00 m   6.56 ft / 2.00 m
     Main Belt covers 146 % of normal length

   - Torpedo Bulkhead:
      0.98" / 25 mm   262.47 ft / 80.00 m   21.33 ft / 6.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   5.91" / 150 mm      7.87" / 200 mm
   2nd:   2.95" / 75 mm   1.97" / 50 mm      2.95" / 75 mm
   3rd:   0.59" / 15 mm         -               -
   4th:   0.20" / 5 mm         -               -

   - Armour deck: 1.18" / 30 mm, Conning tower: 9.84" / 250 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 20,000 shp / 14,920 Kw = 21.46 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,703 tons (100% coal)

Complement:
   495 - 644

Cost:
   £0.876 million / $3.503 million

Distribution of weights at normal displacement:
   Armament: 410 tons, 4.2 %
   Armour: 3,141 tons, 31.8 %
      - Belts: 1,661 tons, 16.8 %
      - Torpedo bulkhead: 204 tons, 2.1 %
      - Armament: 778 tons, 7.9 %
      - Armour Deck: 400 tons, 4.1 %
      - Conning Tower: 98 tons, 1.0 %
   Machinery: 1,667 tons, 16.9 %
   Hull, fittings & equipment: 3,236 tons, 32.8 %
   Fuel, ammunition & stores: 1,375 tons, 13.9 %
   Miscellaneous weights: 50 tons, 0.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,154 lbs / 4,606 Kg = 41.6 x 7.9 " / 200 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 2.6 ft / 0.8 m
   Roll period: 15.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 62 %
         - Recoil effect (Restricted arc if above 1.00): 0.68
   Seaboat quality  (Average = 1.00): 1.31

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 7.70 : 1
   'Natural speed' for length: 21.20 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   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:      22.97 ft / 7.00 m
      - Forecastle (20 %):   14.44 ft / 4.40 m
      - Mid (50 %):      14.44 ft / 4.40 m
      - Quarterdeck (15 %):   14.44 ft / 4.40 m
      - Stern:      14.44 ft / 4.40 m
      - Average freeboard:   15.12 ft / 4.61 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 136.0 %
      - Above water (accommodation/working, high = better): 101.8 %
   Waterplane Area: 18,319 Square feet or 1,702 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 112 lbs/sq ft or 547 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.60
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily


______

This version has a more Ottoman main armament arrangement.

8500tonner, Ottoman armoured cruiser laid down 1907 (Engine 1905)

Displacement:
   8,715 t light; 9,158 t standard; 10,118 t normal; 10,886 t full load

Dimensions: Length overall / water x beam x draught
   452.76 ft / 452.76 ft x 59.06 ft x 23.95 ft (normal load)
   138.00 m / 138.00 m x 18.00 m  x 7.30 m

Armament:
      4 - 7.87" / 200 mm guns (2x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      8 - 7.87" / 200 mm guns (4x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on side, all amidships
      10 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1907 Model
     Quick firing guns in casemate mounts
     on side, all forward
      10 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread, 6 raised mounts
   Weight of broadside 3,264 lbs / 1,480 kg
   Shells per gun, main battery: 120
   2 - 15.7" / 400 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   410.11 ft / 125.00 m   9.84 ft / 3.00 m
   Ends:   Unarmoured
   Upper:   3.94" / 100 mm   262.47 ft / 80.00 m   6.56 ft / 2.00 m
     Main Belt covers 139 % of normal length

   - Torpedo Bulkhead:
      0.98" / 25 mm   262.47 ft / 80.00 m   21.33 ft / 6.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   5.91" / 150 mm      7.87" / 200 mm
   2nd:   7.87" / 200 mm   5.91" / 150 mm      7.87" / 200 mm
   3rd:   2.95" / 75 mm         -         0.59" / 15 mm
   4th:   0.20" / 5 mm         -               -

   - Armour deck: 0.98" / 25 mm, Conning tower: 7.87" / 200 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 19,943 shp / 14,878 Kw = 21.36 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,729 tons (100% coal)

Complement:
   503 - 655

Cost:
   £0.882 million / $3.530 million

Distribution of weights at normal displacement:
   Armament: 410 tons, 4.1 %
   Armour: 3,243 tons, 32.1 %
      - Belts: 1,570 tons, 15.5 %
      - Torpedo bulkhead: 204 tons, 2.0 %
      - Armament: 1,049 tons, 10.4 %
      - Armour Deck: 341 tons, 3.4 %
      - Conning Tower: 79 tons, 0.8 %
   Machinery: 1,662 tons, 16.4 %
   Hull, fittings & equipment: 3,350 tons, 33.1 %
   Fuel, ammunition & stores: 1,402 tons, 13.9 %
   Miscellaneous weights: 50 tons, 0.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,698 lbs / 4,852 Kg = 43.8 x 7.9 " / 200 mm shells or 1.9 torpedoes
   Stability (Unstable if below 1.00): 1.07
   Metacentric height 2.6 ft / 0.8 m
   Roll period: 15.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 61 %
         - Recoil effect (Restricted arc if above 1.00): 0.66
   Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.553
   Length to Beam Ratio: 7.67 : 1
   'Natural speed' for length: 21.28 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   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:      22.97 ft / 7.00 m
      - Forecastle (20 %):   14.76 ft / 4.50 m
      - Mid (50 %):      14.76 ft / 4.50 m
      - Quarterdeck (15 %):   14.76 ft / 4.50 m
      - Stern:      14.76 ft / 4.50 m
      - Average freeboard:   15.42 ft / 4.70 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 132.0 %
      - Above water (accommodation/working, high = better): 104.6 %
   Waterplane Area: 18,712 Square feet or 1,738 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 114 lbs/sq ft or 556 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.57
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

[Korpen]

All of these criticisms are valid, and I'm not sure what to do with the design.

I'm going to drop the armour to 200mm. Range will go down to 6000nm, the range of my new BBs - I know that the Ottoman Navy is essentially coastal, but methinks these could be useful as raiders in, for example, the Indian Ocean, and it's a long journey from Gaza to Kuwait.

Long story short - I don't think I'll build anything until I get better engine tech.

Here is a result - this ship has twice the firepower at the same speed with slightly reduced range and armour.

They both look kind of similar to my Willem van der Zaan-class ACs, but with slightly more armour, and much smaller guns (20 vs. 24cm).
But after looking at my own ship, is the TB really such a good idea? My pretty identical ship can (SS) take 1,4 torpedoes, and you with the TB can only take 1,9.
Would you underwater surbivability go down to something similar, in that case the weight might be better used for something else?

[Borys]

Ahoj!
My opinion is that a TBS is useless on anything smaller than 20000 tons.
Borys

[The Rock Doctor]

As a station flagship, it may work.  I echo Borys' thoughts on the TBS on a ship this size.  Especially since you're also trying to stuff wing turrets in, which I'm not too certain about.

As a raider, the speed may be an issue depending upon who you'd be raiding against.

[Alikchi]

The thing is, there's not much else for me to spend the weight on. I can't put any more HP into the ship - unless I want a 5-shaft armoured cruiser. I don't know if the wing turrets will fit, either - I need to draw it, but I honestly kind of doubt it. I think this is a dead-end idea until I get better engine tech.

I used the tonnage gained from dropping the TBS to shrink the BC a bit and lengthen the belt slightly.

8500tonner, Ottoman armoured cruiser laid down 1907 (Engine 1905)

Displacement:
   8,665 t light; 9,106 t standard; 10,063 t normal; 10,829 t full load

Dimensions: Length overall / water x beam x draught
   452.76 ft / 452.76 ft x 59.06 ft x 23.95 ft (normal load)
   138.00 m / 138.00 m x 18.00 m  x 7.30 m

Armament:
      4 - 7.87" / 200 mm guns (2x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      8 - 7.87" / 200 mm guns (4x2 guns), 242.51lbs / 110.00kg shells, 1907 Model
     Breech loading guns in turrets (on barbettes)
     on side, all amidships
      10 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1907 Model
     Quick firing guns in casemate mounts
     on side, all forward
      10 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1907 Model
     Machine guns in deck mounts
     on side, evenly spread, 6 raised mounts
   Weight of broadside 3,264 lbs / 1,480 kg
   Shells per gun, main battery: 120
   2 - 15.7" / 400 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   442.91 ft / 135.00 m   9.94 ft / 3.03 m
   Ends:   Unarmoured
   Upper:   3.94" / 100 mm   262.47 ft / 80.00 m   6.56 ft / 2.00 m
     Main Belt covers 151 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.87" / 200 mm   5.91" / 150 mm      7.87" / 200 mm
   2nd:   7.87" / 200 mm   5.91" / 150 mm      7.87" / 200 mm
   3rd:   2.95" / 75 mm         -         0.59" / 15 mm
   4th:   0.20" / 5 mm         -               -

   - Armour deck: 0.98" / 25 mm, Conning tower: 7.87" / 200 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 20,000 shp / 14,920 Kw = 21.40 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,723 tons (100% coal)

Complement:
   502 - 653

Cost:
   £0.881 million / $3.525 million

Distribution of weights at normal displacement:
   Armament: 410 tons, 4.1 %
   Armour: 3,117 tons, 31.0 %
      - Belts: 1,649 tons, 16.4 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1,049 tons, 10.4 %
      - Armour Deck: 340 tons, 3.4 %
      - Conning Tower: 79 tons, 0.8 %
   Machinery: 1,667 tons, 16.6 %
   Hull, fittings & equipment: 3,321 tons, 33.0 %
   Fuel, ammunition & stores: 1,398 tons, 13.9 %
   Miscellaneous weights: 150 tons, 1.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,423 lbs / 4,728 Kg = 42.7 x 7.9 " / 200 mm shells or 1.6 torpedoes
   Stability (Unstable if below 1.00): 1.07
   Metacentric height 2.6 ft / 0.8 m
   Roll period: 15.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.66
   Seaboat quality  (Average = 1.00): 1.37

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 7.67 : 1
   'Natural speed' for length: 21.28 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 44
   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:      22.97 ft / 7.00 m
      - Forecastle (20 %):   14.76 ft / 4.50 m
      - Mid (50 %):      14.76 ft / 4.50 m
      - Quarterdeck (15 %):   14.76 ft / 4.50 m
      - Stern:      14.76 ft / 4.50 m
      - Average freeboard:   15.42 ft / 4.70 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 89.0 %
      - Above water (accommodation/working, high = better): 104.5 %
   Waterplane Area: 18,660 Square feet or 1,734 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 113 lbs/sq ft or 552 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.71
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

If you made those wing turrets into singles, for a 2x2, 4x1 armament, and adjust the length of your belt, you could probably then decrease the draught of the ship substantially.  That would provide greater speed on the same machinery.  And you'd still have a six gun broadside, which is not bad at all for the displacement.