Imperial Roman Navy: 1910-1914 Designs

[maddox]

Is that a cruiser, or tanker? Almost 9000 tons of oil on board.

[Jefgte]

Range 5,500nm at 24.00 kts

Very high (unusual) cruiser speed !

... In order to make the trip in about a week, a speed of 24knts is required...

What is the point of making the trip in 1 week?
You could have colonial cruisers in Texas harbors...

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.54" / 90 mm   415.85 ft / 126.75 m   13.12 ft / 4.00 m
   Ends:   1.18" / 30 mm   223.88 ft / 68.24 m   13.12 ft / 4.00 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.09" / 180 mm   4.33" / 110 mm      7.09" / 180 mm
   2nd:   1.97" / 50 mm   0.20" / 5 mm      0.98" / 25 mm

   - Protected deck - single deck:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Main belt & Conning tower are short with 90mm
120mm w"ll be better & well balanced with turrets & deck armor thickness

[snip]

The requirement to make the trip faster is two-fold

1) The ship can serve as a rapid reaction to changing events on ether side of the Atlantic. By virtue of its speed, it can relocate faster than any known warship in the world. That kind of flexibility is useful when the ships traditionally assigned to the colonies are going to be older and slower. Having the ability for a "modern" cruiser to be there much faster is viewed as a good thing. With this rapid transit in mind, the ship can be attached to the main fleet based in Europe, where it can also function as a high-endurance scout or heavy escort.

2) The Project Mercury designs have all be very large, and as such have included much larger guns than a traditional cruiser in the Roman Navy. This is viewed to provide a benefit much like the gap between OTL armored cruisers and battlecruisers. By nature of the designs fast top speed, she can chase down the older, slower cruisers that would traditionally be present in the colonies while being able to run away from any predreadnaughts that might be around. Couple this with the rapid transit time, and there is a good 10-14 day window where the ship is likely able to exert an outsized influence on a colonial conflict before any committed major fleet assets show up.

This also has the side effect of giving the Roman Navy a cruiser with very long range that would likely be able to support any future far-flung colonies, abit at a slower speed.

Regarding Armor: When viewed against older guns, the armor is accepted as adequate. The ship is not meant to go toe-to-toe with a battleship, or another modern Armored Cruiser. With future technological improvements and developments (eg new 210mm or other inbetween 140mm and 340mm guns for this sort of ship), later designs centered on the Mercury requirement would perhaps be more well-rounded warships.

[Desertfox]

Thats an insanely high cruising speed, not even period ocean liners went that fast. Its going to strain the engines, the ship, and the crew. How about somewhere in the 16-20kt range? Still very fast but not such a high leap. Right now that ship is basically an armed oil tanker and very Fisherite.

[maddox]

Lusitania and Mauretania could do it in 1909...

[Jefgte]

A gain of a week is questionable ...
An equivalent 14,000 t cruiser, better balanced, with 234, 254 or 305 guns arriving a week after it would likely destroy it.

But that's your choice...

[Jefgte]

Lusitania and Mauretania could do it in 1909...

We are in 1912 & april 14 is approaching...

:'(

[snip]

Foxy complaining about something being Fisherite, now I've seen it all.  :P

This is definitely not going to be a prefect ship, but I like that its a unique one. My plan right now is to only build one. Once its flaws become apparent, I'm sure later ships built to the Mercury specification will look quite different.

[snip]

In the relm of more traditional cruisers, we have this. Building on the preceding Parisius class, the design trades some vertical protection for longer legs and about a knot increase in speed. Armament is also now concentrated in new twin mounts.

1913 Long Range Cruiser Design A, Imperial Roman Republic Cruiser laid down 1913

Displacement:
   8,500 t light; 8,791 t standard; 9,904 t normal; 10,795 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (617.69 ft / 606.96 ft) x 65.62 ft x (19.69 / 20.92 ft)
   (188.27 m / 185.00 m) x 20.00 m  x (6.00 / 6.38 m)

Armament:
      8 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 210 per gun
     Quick firing guns in deck and hoist mounts, 1909 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      6 - 2.95" / 75.0 mm 45.0 cal guns - 12.99lbs / 5.89kg shells, 285 per gun
     Quick firing guns in deck mounts, 1902 Model
     6 x Single mounts on sides, evenly spread
      Weight of broadside 766 lbs / 347 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   394.52 ft / 120.25 m   9.84 ft / 3.00 m
   Ends:   1.18" / 30 mm   212.40 ft / 64.74 m   9.84 ft / 3.00 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.20" / 5 mm      0.98" / 25 mm

   - Protected deck - single deck:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 64,000 shp / 47,744 Kw = 30.10 kts
   Range 7,000nm at 14.00 kts
   Bunker at max displacement = 2,004 tons

Complement:
   496 - 645

Cost:
   £0.803 million / $3.213 million

Distribution of weights at normal displacement:
   Armament: 204 tons, 2.1 %
      - Guns: 204 tons, 2.1 %
   Armour: 1,463 tons, 14.8 %
      - Belts: 406 tons, 4.1 %
      - Armament: 14 tons, 0.1 %
      - Armour Deck: 1,008 tons, 10.2 %
      - Conning Tower: 35 tons, 0.4 %
   Machinery: 2,508 tons, 25.3 %
   Hull, fittings & equipment: 3,419 tons, 34.5 %
   Fuel, ammunition & stores: 1,404 tons, 14.2 %
   Miscellaneous weights: 905 tons, 9.1 %
      - Hull below water: 640 tons
      - Hull above water: 50 tons
      - On freeboard deck: 200 tons
      - Above deck: 15 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12,961 lbs / 5,879 Kg = 154.8 x 5.5 " / 140 mm shells or 1.7 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 12.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.442 / 0.453
   Length to Beam Ratio: 9.25 : 1
   'Natural speed' for length: 24.64 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 3.87 ft / 1.18 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.86 ft / 5.75 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.60 ft / 5.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98.5 %
      - Above water (accommodation/working, high = better): 159.0 %
   Waterplane Area: 25,241 Square feet or 2,345 Square metres
   Displacement factor (Displacement / loading): 120 %
   Structure weight / hull surface area: 95 lbs/sq ft or 462 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.02
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[snip]

And one more for the pile. The Roman navy has a good number of cruisers, but this number is inflated by many older ships which are no longer fast enough to fill some cruiser roles. As such, one of the proposed construction items for 1913 is a Sostituzione Incrociatore. The goal of this design is to produce a "good enough" cruiser to ensure current numbers can be maintained with more modern ships. The design must be capable of being built in a year. Intent would be to mass produce the design to replace old reciprocating engine cruisers. The design would be updated on a bi-yearly basis to take into account technological improvements. The first draft is below.

Replacement Cruiser, Imperial Roman Cruiser laid down 1913

Displacement:
   3,000 t light; 3,116 t standard; 3,319 t normal; 3,481 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (400.26 ft / 393.70 ft) x 39.37 ft x (13.12 / 13.64 ft)
   (122.00 m / 120.00 m) x 12.00 m  x (4.00 / 4.16 m)

Armament:
      6 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
     Quick firing guns in deck and hoist mounts, 1909 Model
     2 x Twin mounts on centreline ends, evenly spread
     2 x Single mounts on sides, forward deck aft
      Weight of broadside 516 lbs / 234 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.36" / 60 mm   285.43 ft / 87.00 m   9.84 ft / 3.00 m
   Ends:   0.79" / 20 mm   108.23 ft / 32.99 m   9.84 ft / 3.00 m
     Main Belt covers 112 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm   0.20" / 5 mm      1.97" / 50 mm

   - Armoured deck - single deck:
   For and Aft decks: 1.97" / 50 mm

   - Conning towers: Forward 1.97" / 50 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 22,000 shp / 16,412 Kw = 25.84 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 365 tons

Complement:
   218 - 284

Cost:
   £0.315 million / $1.259 million

Distribution of weights at normal displacement:
   Armament: 160 tons, 4.8 %
      - Guns: 160 tons, 4.8 %
   Armour: 672 tons, 20.3 %
      - Belts: 300 tons, 9.0 %
      - Armament: 10 tons, 0.3 %
      - Armour Deck: 352 tons, 10.6 %
      - Conning Tower: 9 tons, 0.3 %
   Machinery: 862 tons, 26.0 %
   Hull, fittings & equipment: 976 tons, 29.4 %
   Fuel, ammunition & stores: 319 tons, 9.6 %
   Miscellaneous weights: 330 tons, 9.9 %
      - Hull below water: 220 tons
      - Hull above water: 25 tons
      - On freeboard deck: 75 tons
      - Above deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,176 lbs / 1,441 Kg = 37.9 x 5.5 " / 140 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 1.8 ft / 0.5 m
   Roll period: 12.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 54 %
         - Recoil effect (Restricted arc if above 1.00): 0.42
   Seaboat quality  (Average = 1.00): 1.13

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.571 / 0.576
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 0.89 ft / 0.27 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17.50 %,  15.58 ft / 4.75 m,  13.94 ft / 4.25 m
      - Forward deck:   40.00 %,  13.94 ft / 4.25 m,  13.94 ft / 4.25 m
      - Aft deck:   32.50 %,  13.94 ft / 4.25 m,  13.94 ft / 4.25 m
      - Quarter deck:   10.00 %,  13.94 ft / 4.25 m,  13.94 ft / 4.25 m
      - Average freeboard:      14.06 ft / 4.29 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 109.8 %
      - Above water (accommodation/working, high = better): 134.4 %
   Waterplane Area: 11,033 Square feet or 1,025 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 59 lbs/sq ft or 286 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 1.28
      - Overall: 0.90
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

[Desertfox]

I mean if everyone starts being Fisherite, then I'll have to start building normal ships... the horror!

[Kaiser Kirk]

Foxy complaining about something being Fisherite, now I've seen it all.  :P

This is definitely not going to be a prefect ship, but I like that its a unique one. My plan right now is to only build one. Once its flaws become apparent, I'm sure later ships built to the Mercury specification will look quite different.

In the realm of ' I don't know why they did / didn't do it'  is fuel capacity. I one did some quick SSs of the US long range ships and found ~19% fuel & stores was about the limit actually done.
I would imagine somewhere along the line the huge void spaces and problems of stability changes with fuel use might compromise a warship's performance.

However, especially for one-off ships, exploring possible mistakes can be fun.  Look at the original IJN with their frantic hull strengthening of several classes,  and loss of DDs to capsizing.... or the problems the later Fisher BCs had with firing and so damaging their hull because they were built too light. Or the American US Vulcan dynamite gun ship. Cool concept :)

[snip]

It is felt that the 140mm gun, due to limitations of shell weight, will loose its ability to be an effective anti-cruiser weapon within a short time frame. As such, the Imperial Roman Navy is planning on a crash program to get a modern cruiser gun by modifying the older 210mmL45 into a 180mmL52.5. Such a gun would be mated with the 1913 Long Range Cruiser with the same armament layout as the Parisius class. [Note, I complete the 1910 Gun tech in 1912H2, and with provision D of the Naval gun research rules, I can rush the development of the gun in 1 year]

1914 Long Range Cruiser Design A, Imperial Roman Republic Cruiser laid down 1914

Displacement:
   9,000 t light; 9,369 t standard; 10,475 t normal; 11,360 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (620.08 ft / 606.96 ft) x 65.62 ft x (19.69 / 20.89 ft)
   (189.00 m / 185.00 m) x 20.00 m  x (6.00 / 6.37 m)

Armament:
      7 - 7.09" / 180 mm 52.5 cal guns - 189.60lbs / 86.00kg shells, 200 per gun
     Breech loading guns in deck and hoist mounts, 1913 Model
     5 x Single mounts on centreline ends, majority aft
      2 raised mounts - superfiring
     2 x Single mounts on sides, forward deck centre
      6 - 2.95" / 75.0 mm 45.0 cal guns - 12.98lbs / 5.89kg shells, 285 per gun
     Quick firing guns in deck mounts, 1914 Model
     6 x Single mounts on sides, evenly spread
      Weight of broadside 1,405 lbs / 637 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   409.71 ft / 124.88 m   9.84 ft / 3.00 m
   Ends:   0.79" / 20 mm   197.24 ft / 60.12 m   9.84 ft / 3.00 m
     Main Belt covers 104 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.39" / 10 mm      2.36" / 60 mm

   - Protected deck - single deck:
   For and Aft decks: 2.36" / 60 mm
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 67,998 shp / 50,727 Kw = 30.20 kts
   Range 7,000nm at 14.00 kts
   Bunker at max displacement = 1,991 tons

Complement:
   517 - 673

Cost:
   £1.059 million / $4.235 million

Distribution of weights at normal displacement:
   Armament: 423 tons, 4.0 %
      - Guns: 423 tons, 4.0 %
   Armour: 1,501 tons, 14.3 %
      - Belts: 382 tons, 3.6 %
      - Armament: 40 tons, 0.4 %
      - Armour Deck: 1,042 tons, 9.9 %
      - Conning Tower: 37 tons, 0.3 %
   Machinery: 2,619 tons, 25.0 %
   Hull, fittings & equipment: 3,487 tons, 33.3 %
   Fuel, ammunition & stores: 1,475 tons, 14.1 %
   Miscellaneous weights: 970 tons, 9.3 %
      - Hull below water: 680 tons
      - Hull above water: 50 tons
      - On freeboard deck: 230 tons
      - Above deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12,453 lbs / 5,649 Kg = 70.0 x 7.1 " / 180 mm shells or 1.6 torpedoes
   Stability (Unstable if below 1.00): 1.35
   Metacentric height 4.5 ft / 1.4 m
   Roll period: 12.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 65 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.16

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.468 / 0.478
   Length to Beam Ratio: 9.25 : 1
   'Natural speed' for length: 24.64 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   Bow angle (Positive = bow angles forward): 25.00 degrees
   Stern overhang: 4.33 ft / 1.32 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.86 ft / 5.75 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   37.50 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   12.50 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.60 ft / 5.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.6 %
      - Above water (accommodation/working, high = better): 155.8 %
   Waterplane Area: 25,783 Square feet or 2,395 Square metres
   Displacement factor (Displacement / loading): 115 %
   Structure weight / hull surface area: 98 lbs/sq ft or 481 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.01
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

[snip]

Update to the 1913 Replacement Cruiser design. Some revision to armor, updated weapon loadout.

Replacement Cruiser Template B, Imperial Roman Cruiser laid down 1913

Displacement:
   2,990 t light; 3,116 t standard; 3,319 t normal; 3,481 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (400.26 ft / 393.70 ft) x 39.37 ft x (13.12 / 13.64 ft)
   (122.00 m / 120.00 m) x 12.00 m  x (4.00 / 4.16 m)

Armament:
      6 - 5.51" / 140 mm 55.0 cal guns - 85.98lbs / 39.00kg shells, 175 per gun
     Quick firing guns in deck and hoist mounts, 1909 Model
     2 x Twin mounts on centreline ends, evenly spread
     2 x Single mounts on sides, forward deck aft
      4 - 2.95" / 75.0 mm 45.0 cal guns - 13.23lbs / 6.00kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1902 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      2 - 1.77" / 45.0 mm 50.0 cal guns - 2.76lbs / 1.25kg shells, 550 per gun
     Anti-air guns in deck mounts, 1913 Model
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
      4 - 0.26" / 6.5 mm 110.0 cal guns - 0.01lbs / 0.00kg shells, 3,000 per gun
     Machine guns in deck mounts, 1913 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 574 lbs / 261 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.36" / 60 mm   285.43 ft / 87.00 m   9.84 ft / 3.00 m
   Ends:   0.79" / 20 mm   108.23 ft / 32.99 m   9.84 ft / 3.00 m
     Main Belt covers 112 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm   0.20" / 5 mm      1.97" / 50 mm
   2nd:   0.39" / 10 mm   0.20" / 5 mm            -

   - Protected deck - single deck:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 0.79" / 20 mm  Quarter deck: 0.79" / 20 mm

   - Conning towers: Forward 1.97" / 50 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 22,000 shp / 16,412 Kw = 25.84 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 365 tons

Complement:
   218 - 284

Cost:
   £0.320 million / $1.282 million

Distribution of weights at normal displacement:
   Armament: 177 tons, 5.3 %
      - Guns: 177 tons, 5.3 %
   Armour: 628 tons, 18.9 %
      - Belts: 300 tons, 9.0 %
      - Armament: 15 tons, 0.5 %
      - Armour Deck: 303 tons, 9.1 %
      - Conning Tower: 9 tons, 0.3 %
   Machinery: 861 tons, 25.9 %
   Hull, fittings & equipment: 995 tons, 30.0 %
   Fuel, ammunition & stores: 329 tons, 9.9 %
   Miscellaneous weights: 330 tons, 9.9 %
      - Hull below water: 220 tons
      - Hull above water: 25 tons
      - On freeboard deck: 75 tons
      - Above deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,099 lbs / 1,406 Kg = 37.0 x 5.5 " / 140 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.23
   Metacentric height 1.8 ft / 0.5 m
   Roll period: 12.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.48
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.571 / 0.576
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 19.84 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 45
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 0.89 ft / 0.27 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   17.50 %,  15.58 ft / 4.75 m,  13.94 ft / 4.25 m
      - Forward deck:   40.00 %,  13.94 ft / 4.25 m,  13.94 ft / 4.25 m
      - Aft deck:   32.50 %,  13.94 ft / 4.25 m,  13.94 ft / 4.25 m
      - Quarter deck:   10.00 %,  13.94 ft / 4.25 m,  13.94 ft / 4.25 m
      - Average freeboard:      14.06 ft / 4.29 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 111.4 %
      - Above water (accommodation/working, high = better): 134.4 %
   Waterplane Area: 11,033 Square feet or 1,025 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 60 lbs/sq ft or 294 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 1.30
      - Overall: 0.90
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room

[Jefgte]

Correct 1913 cruiser for 3000t

Miscellaneous weights: 330 tons, 9.9 %
      - Hull below water: 220 tons
      - Hull above water: 25 tons
      - On freeboard deck: 75 tons
      - Above deck: 10 tons

Interesting reserve for other jobs...