Replacement PCs

[Sachmle]

As my San Luis class PCs were all laid down by 1892 I'm thinking of replacing them in the next 3 years, as slip become available.  Here's the SS report

Santa Fe Class, NUS Protected Cruiser laid down 1909 (Engine 1905)

Displacement:
   4,756 t light; 5,092 t standard; 8,000 t normal; 10,327 t full load

Dimensions: Length overall / water x beam x draught
   375.00 ft / 375.00 ft x 56.00 ft x 27.00 ft (normal load)
   114.30 m / 114.30 m x 17.07 m  x 8.23 m

Armament:
      4 - 8.00" / 203 mm guns in single mounts, 240.00lbs / 108.86kg shells, 1900 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      2 - 8.00" / 203 mm guns in single mounts, 240.00lbs / 108.86kg shells, 1900 Model
     Breech loading guns in deck mounts with hoists
     on centreline, all amidships, 1 raised mount
      8 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1900 Model
     Quick firing guns in casemate mounts
     on side, all amidships
      4 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1900 Model
     Machine guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 1,682 lbs / 763 kg
   Shells per gun, main battery: 175
   4 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -         1.00" / 25 mm
   2nd:   1.00" / 25 mm         -         1.00" / 25 mm
   3rd:   1.00" / 25 mm         -               -

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 20,646 shp / 15,402 Kw = 22.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 5,235 tons (100% coal)

Complement:
   422 - 549

Cost:
   £0.596 million / $2.383 million

Distribution of weights at normal displacement:
   Armament: 224 tons, 2.8 %
   Armour: 615 tons, 7.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 49 tons, 0.6 %
      - Armour Deck: 515 tons, 6.4 %
      - Conning Tower: 52 tons, 0.6 %
   Machinery: 1,721 tons, 21.5 %
   Hull, fittings & equipment: 2,147 tons, 26.8 %
   Fuel, ammunition & stores: 3,244 tons, 40.5 %
   Miscellaneous weights: 50 tons, 0.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,196 lbs / 3,718 Kg = 32.0 x 8.0 " / 203 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.34
   Metacentric height 3.5 ft / 1.1 m
   Roll period: 12.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 82 %
         - Recoil effect (Restricted arc if above 1.00): 0.39
   Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.494
   Length to Beam Ratio: 6.70 : 1
   'Natural speed' for length: 19.36 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   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:      18.00 ft / 5.49 m
      - Forecastle (35 %):   18.00 ft / 5.49 m (13.00 ft / 3.96 m aft of break)
      - Mid (50 %):      13.00 ft / 3.96 m
      - Quarterdeck (15 %):   13.00 ft / 3.96 m
      - Stern:      13.00 ft / 3.96 m
      - Average freeboard:   14.75 ft / 4.50 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.8 %
      - Above water (accommodation/working, high = better): 73.8 %
   Waterplane Area: 13,914 Square feet or 1,293 Square metres
   Displacement factor (Displacement / loading): 136 %
   Structure weight / hull surface area: 91 lbs/sq ft or 447 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.65
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

There's way too much bunkerage on that baby.  There's more coal than ship.

I don't care for her:  the hull's way too deep for a cruiser, the main battery will be very slow firing (being hand loaded), no belt armor, and too slow for a modern cruiser.

[P3D]

"Armed Fleet Collier", indeed.

Forget 8"s. For 6-8000@10kts is adequate range with coal.

[Desertfox]

I see what you are trying to achive. Perhaps I could interest you in the following design (modified to you requests) would come complete with 1909 Turbine plans:


Launceston class, New Switzerland  Cruiser laid down 1904 (Engine 1909)

Displacement:
   4,640 t light; 4,879 t standard; 5,876 t normal; 6,674 t full load

Dimensions: Length overall / water x beam x draught
   470.00 ft / 470.00 ft x 49.00 ft x 19.00 ft (normal load)
   143.26 m / 143.26 m x 14.94 m  x 5.79 m

Armament:
      4 - 8.00" / 203 mm guns in single mounts, 256.00lbs / 116.12kg shells, 1904 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      10 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1904 Model
     Breech loading guns in deck mounts
     on side, all amidships
      8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1904 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1904 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 1,360 lbs / 617 kg
   Shells per gun, main battery: 150
   8 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.00" / 102 mm   400.00 ft / 121.92 m   9.00 ft / 2.74 m
   Ends:   Unarmoured
     Main Belt covers 131 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4.00" / 102 mm   2.00" / 51 mm      2.00" / 51 mm
   2nd:   1.00" / 25 mm         -               -

   - Armour deck: 1.00" / 25 mm, Conning tower: 4.00" / 102 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 24,713 shp / 18,436 Kw = 25.00 kts
   Range 12,050nm at 10.00 kts
   Bunker at max displacement = 1,795 tons (70% coal)

Complement:
   335 - 436

Cost:
   £0.473 million / $1.893 million

Distribution of weights at normal displacement:
   Armament: 170 tons, 2.9 %
   Armour: 978 tons, 16.6 %
      - Belts: 576 tons, 9.8 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 98 tons, 1.7 %
      - Armour Deck: 276 tons, 4.7 %
      - Conning Tower: 28 tons, 0.5 %
   Machinery: 1,200 tons, 20.4 %
   Hull, fittings & equipment: 2,143 tons, 36.5 %
   Fuel, ammunition & stores: 1,236 tons, 21.0 %
   Miscellaneous weights: 150 tons, 2.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7,530 lbs / 3,416 Kg = 29.4 x 8.0 " / 203 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.23
   Metacentric height 2.5 ft / 0.8 m
   Roll period: 13.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.58
   Seaboat quality  (Average = 1.00): 1.52

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.470
   Length to Beam Ratio: 9.59 : 1
   'Natural speed' for length: 21.68 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:      24.00 ft / 7.32 m
      - Forecastle (20 %):   17.00 ft / 5.18 m
      - Mid (50 %):      15.00 ft / 4.57 m
      - Quarterdeck (15 %):   15.00 ft / 4.57 m
      - Stern:      15.00 ft / 4.57 m
      - Average freeboard:   16.26 ft / 4.96 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.9 %
      - Above water (accommodation/working, high = better): 108.2 %
   Waterplane Area: 14,940 Square feet or 1,388 Square metres
   Displacement factor (Displacement / loading): 120 %
   Structure weight / hull surface area: 85 lbs/sq ft or 417 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.61
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Carthaginian]

Can NS build her?

I wouldn't worry with 8" guns on such a ship- the Olympia was more an exception than a rule in PC construction.

IF you want the 8" guns, then 'turret & barbettes' is the only way to go- 'hurray' for powered loading equipment! My Mobile class might be a good place to look for an example; I think she's close to what you're trying to achieve here.

[Desertfox]

I can't build her (well I can but only under certain circumstances), but I can provide full plans and the required engine tech at bargain prices.

The historical Hawkins class had Mount & Hoist and where decent ships. The Launcestons have proven their worth in combat, sinking a much larger AC and bagging an entire convoy.

[Borys]

Ahoj!
The 7,5" inch guns were originally developed by the RN as replacement for 8" guns, as the shells could be manhandled by 2 (strong) men, not 3.
The cut off point seems to be 200lbs.
Borys

[Carthaginian]

And I think the USA knows where she can buy 7.5" guns... ;)
In fact, I can make as many as you need in 1/1909, probably. They are only 13.75t each.

EDIT: Here's an idea for a much cheaper ship armed with 7.5" guns... less cost and BP meaning more ships to cover more turf- faster, too. ;)

3rd Class Cruiser laid down 1909

Displacement:
   3,700 t light; 3,888 t standard; 4,356 t normal; 4,731 t full load

Dimensions: Length overall / water x beam x draught
   375.00 ft / 375.00 ft x 40.00 ft x 18.50 ft (normal load)
   114.30 m / 114.30 m x 12.19 m  x 5.64 m

Armament:
      3 - 7.50" / 191 mm guns in single mounts, 200.00lbs / 90.72kg shells, 1909 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority aft, 1 raised mount aft
      8 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1909 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1909 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 844 lbs / 383 kg
   Shells per gun, main battery: 200
   4 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.00" / 76 mm   320.00 ft / 97.54 m   11.00 ft / 3.35 m
   Ends:   Unarmoured
     Main Belt covers 131 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -         3.00" / 76 mm
   2nd:   1.00" / 25 mm         -         3.00" / 76 mm
   3rd:   0.50" / 13 mm         -               -

   - Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 3 shafts, 27,000 shp / 20,142 Kw = 25.94 kts
   Range 6,000nm at 10.10 kts
   Bunker at max displacement = 843 tons (100% coal)

Complement:
   267 - 348

Cost:
   £0.412 million / $1.649 million

Distribution of weights at normal displacement:
   Armament: 112 tons, 2.6 %
   Armour: 672 tons, 15.4 %
      - Belts: 424 tons, 9.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 37 tons, 0.8 %
      - Armour Deck: 194 tons, 4.4 %
      - Conning Tower: 17 tons, 0.4 %
   Machinery: 1,350 tons, 31.0 %
   Hull, fittings & equipment: 1,466 tons, 33.7 %
   Fuel, ammunition & stores: 656 tons, 15.1 %
   Miscellaneous weights: 100 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,117 lbs / 1,414 Kg = 14.8 x 7.5 " / 191 mm shells or 0.7 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 1.6 ft / 0.5 m
   Roll period: 13.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.87
   Seaboat quality  (Average = 1.00): 1.34

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.549
   Length to Beam Ratio: 9.38 : 1
   'Natural speed' for length: 19.36 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   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:      24.00 ft / 7.32 m
      - Forecastle (20 %):   21.00 ft / 6.40 m
      - Mid (50 %):      18.00 ft / 5.49 m (12.00 ft / 3.66 m aft of break)
      - Quarterdeck (15 %):   12.00 ft / 3.66 m
      - Stern:      14.00 ft / 4.27 m
      - Average freeboard:   16.44 ft / 5.01 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 123.4 %
      - Above water (accommodation/working, high = better): 99.8 %
   Waterplane Area: 10,463 Square feet or 972 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 72 lbs/sq ft or 351 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.79
      - 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

[Sachmle]

The reason I had sooooooo much bunkerage and range was to use up extra composite strength.  Due to engine tech limitations, 5,000 shpx4 shafts = 20,000 max I was limited to either build a PC smaller than the one it was replacing and have around 24kts top speed, or build one bigger and have ~23 kts with 10,000+ range at ~14kts.  In a perfect world I'd research the next engine tech and then build them, but the San Luis' are already 16 yrs old and I don't have anything to use in their place while I refit them.  I suppose I could bid out a contract in 1/09, but I don't know if I can afford it with the 2nd VdM and 4 more La Rioja's already on the slips.  I think I can finish the DDs pretty fast, only 751t, but VdM takes alot of resources.  If I did put out a contract the requirement would be  6000t light  >=8500 range, >= 4 6" 8-10 QF (3 or 12 pds) for TB defence, 4 above water TT 18", a 25t marconi and at least 24kts.  Any and all offers will be considered.  Would like to lay down at least 2 1/09, but would wait til 2/09 if outstanding design, but needs more $ or BP.

[Borys]

Ahoj!
Something like this:
Kaiserin und Koenigin Marie Theresie, Habsburgs Kleiner Kreuzer laid down 1909

Displacement:
   4 633 t light; 4 785 t standard; 5 321 t normal; 5 749 t full load

Dimensions: Length overall / water x beam x draught
   380,52 ft / 380,00 ft x 45,00 ft x 19,80 ft (normal load)
   115,98 m / 115,82 m x 13,72 m  x 6,04 m

Armament:
      2 - 6,00" / 152 mm guns in single mounts, 100,00lbs / 45,36kg shells, 1909 Model
     Breech loading guns in deck mounts with hoists
     on side, all forward, all raised mounts - superfiring
      3 - 6,00" / 152 mm guns in single mounts, 100,00lbs / 45,36kg shells, 1909 Model
     Breech loading guns in deck mounts with hoists
     on side, all aft
      4 - 0,43" / 11,0 mm guns in single mounts, 0,04lbs / 0,02kg shells, 1909 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 500 lbs / 227 kg
   Shells per gun, main battery: 150
   8 - 20,0" / 508 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4,00" / 102 mm   303,00 ft / 92,35 m   12,00 ft / 3,66 m
   Ends:   Unarmoured
     Main Belt covers 123% of normal length

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

   - Armour deck: 1,50" / 38 mm, Conning tower: 2,00" / 51 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 36 485 shp / 27 217 Kw = 27,00 kts
   Range 6 500nm at 10,00 kts
   Bunker at max displacement = 964 tons (90% coal)

Complement:
   310 - 404

Cost:
   £0,472 million / $1,887 million

Distribution of weights at normal displacement:
   Armament: 68 tons, 1,3%
   Armour: 958 tons, 18,0%
      - Belts: 595 tons, 11,2%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 19 tons, 0,4%
      - Armour Deck: 331 tons, 6,2%
      - Conning Tower: 13 tons, 0,2%
   Machinery: 1 806 tons, 33,9%
   Hull, fittings & equipment: 1 721 tons, 32,3%
   Fuel, ammunition & stores: 688 tons, 12,9%
   Miscellaneous weights: 80 tons, 1,5%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4 263 lbs / 1 934 Kg = 39,5 x 6,0 " / 152 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,22
   Metacentric height 2,2 ft / 0,7 m
   Roll period: 12,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,38
   Seaboat quality  (Average = 1.00): 1,52

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0,550
   Length to Beam Ratio: 8,44 : 1
   'Natural speed' for length: 19,49 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   Bow angle (Positive = bow angles forward): 1,00 degrees
   Stern overhang: -1,00 ft / -0,30 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      30,00 ft / 9,14 m
      - Forecastle (20%):   26,00 ft / 7,92 m (18,00 ft / 5,49 m aft of break)
      - Mid (50%):      18,00 ft / 5,49 m
      - Quarterdeck (15%):   18,00 ft / 5,49 m
      - Stern:      18,00 ft / 5,49 m
      - Average freeboard:   19,92 ft / 6,07 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 121,6%
      - Above water (accommodation/working, high = better): 93,4%
   Waterplane Area: 11 934 Square feet or 1 109 Square metres
   Displacement factor (Displacement / loading): 103%
   Structure weight / hull surface area: 71 lbs/sq ft or 347 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,85
      - Longitudinal: 3,93
      - 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
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

ADDED LATER:
It is possible for you to buy and digest the necessary engine tech by 1/1910. Also, remember what I wrote about the 1:2 Active:Reserves tech? So can have the 12,000 per shaft engines available from 2/1908 onwards.

Borys

[maddox]

France, as always interested in furthering the world has "by accident" a desing that could be usable.

Design VII, French Export- NUS proposal First rate Cruiser laid down 1908 (Engine 1909)

Displacement:
   5.235 t light; 5.491 t standard; 6.336 t normal; 7.011 t full load

Dimensions: Length overall / water x beam x draught
   403,08 ft / 393,70 ft x 55,77 ft x 19,69 ft (normal load)
   122,86 m / 120,00 m x 17,00 m  x 6,00 m

Armament:
      6 - 7,68" / 195 mm guns (3x2 guns), 226,24lbs / 102,62kg shells, 1908 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      8 - 5,51" / 140 mm guns in single mounts, 83,72lbs / 37,98kg shells, 1908 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     4 guns in hull casemates - Limited use in all but light seas
      8 - 2,76" / 70,0 mm guns in single mounts, 10,47lbs / 4,75kg shells, 1908 Model
     Quick firing guns in deck mounts
     on side, evenly spread, 4 raised mounts
      8 - 2,24" / 57,0 mm guns in single mounts, 5,65lbs / 2,56kg shells, 1908 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1908 Model
     Machine guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 2.158 lbs / 979 kg
   Shells per gun, main battery: 100
   4 - 18,0" / 457,2 mm submerged torpedo tubes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4,00" / 102 mm   3,00" / 76 mm      5,00" / 127 mm
   2nd:   3,00" / 76 mm   1,00" / 25 mm      1,00" / 25 mm
   3rd:   1,00" / 25 mm   0,50" / 13 mm            -

   - Armour deck: 3,00" / 76 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 29.352 shp / 21.897 Kw = 25,00 kts
   Range 6.000nm at 12,00 kts
   Bunker at max displacement = 1.520 tons (100% coal)

Complement:
   354 - 461

Cost:
   £0,615 million / $2,461 million

Distribution of weights at normal displacement:
   Armament: 270 tons, 4,3%
   Armour: 1.193 tons, 18,8%
      - Belts: 0 tons, 0,0%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 371 tons, 5,9%
      - Armour Deck: 822 tons, 13,0%
      - Conning Tower: 0 tons, 0,0%
   Machinery: 1.468 tons, 23,2%
   Hull, fittings & equipment: 2.245 tons, 35,4%
   Fuel, ammunition & stores: 1.101 tons, 17,4%
   Miscellaneous weights: 60 tons, 0,9%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4.907 lbs / 2.226 Kg = 21,7 x 7,7 " / 195 mm shells or 1,0 torpedoes
   Stability (Unstable if below 1.00): 1,04
   Metacentric height 2,2 ft / 0,7 m
   Roll period: 15,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 83 %
         - Recoil effect (Restricted arc if above 1.00): 0,69
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,513
   Length to Beam Ratio: 7,06 : 1
   'Natural speed' for length: 19,84 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 78
   Bow angle (Positive = bow angles forward): 7,00 degrees
   Stern overhang: 6,56 ft / 2,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22,97 ft / 7,00 m
      - Forecastle (20%):   16,40 ft / 5,00 m
      - Mid (50%):      15,42 ft / 4,70 m
      - Quarterdeck (15%):   15,42 ft / 4,70 m
      - Stern:      15,42 ft / 4,70 m
      - Average freeboard:   16,29 ft / 4,97 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 115,8%
      - Above water (accommodation/working, high = better): 124,7%
   Waterplane Area: 14.806 Square feet or 1.375 Square metres
   Displacement factor (Displacement / loading): 100%
   Structure weight / hull surface area: 97 lbs/sq ft or 472 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,92
      - Longitudinal: 2,10
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

The historical Hawkins class had Mount & Hoist and where decent ships.

Actually - were they?  The RN didn't seem to do much with them post-war, despite being some of the largest and newest cruisers in their inventory.  Nor did they use the 7.5" mounts in their follow-up treaty cruisers.  Come WW2, they intended to re-arm the survivors with 6" guns (though only got around to doing so with one of them).  Much as I personally like the design, I get the sense that in service, it was a bit of a flop.

Sachmle:  engine tech can be acquired.  You just gotta ask around. 

[Carthaginian]

The historical Hawkins class had Mount & Hoist and where decent ships.

Actually - were they?  The RN didn't seem to do much with them post-war, despite being some of the largest and newest cruisers in their inventory.  Nor did they use the 7.5" mounts in their follow-up treaty cruisers.  Come WW2, they intended to re-arm the survivors with 6" guns (though only got around to doing so with one of them).  Much as I personally like the design, I get the sense that in service, it was a bit of a flop.

Sachmle:  engine tech can be acquired.  You just gotta ask around. 

7.5" was too heavy for a light cruiser and too light for a heavy cruiser by then, Rock. Why build a cruiser with less than the maximum gun size if everyone else isn't? Hawkins was a victim of the time, just like the Cherry Trees.

[Borys]

Ahoj!
There is the magic of "building to the treaty limits". Regardless if 190mm or 203mm, the early treaty cruisers were not armoured to keep such shells out. But it was a case of "we MUST have 203mm, everybody else has them", and "Oh my God that half inch really makes a difference!".
I suppose that this killed the further use of the RN 7'5 inchers in twin turrets.

The Hawkins were in a way a screwed up design - they were "light cruisers", hence the open, single, mount and hoist guns. But the calibre is simply too large for that sort of thing. Plus technological progress in various areas. The Japanese made the same "mistake" with their first 8 inch gunned class - with 6x1x203mm . Had the Hawkins undergone the same sort of rebuild the IJN did - to 3x2x203mm, they would had been much better. Think about a 3x2 or 4x2x7,5" Hawkins. Even though by early WWII they'd still be rather long in the tooth.

Only the Argentinians showed (?) some sanity, having the Italians build two 3x2x190mm cruisers for them. Of course, the Italians talked them into the 7,5" guns as they couldn't fit the 8 inchers into the the tiny hull the Argentinians were willing to pay for.
I would not even rule out reuse of existing Italian or even Austro-Hungarian guns on those ships.

Borys

[Sachmle]

Latest attempt:

Santa Fe, NUS Protected Cruiser laid down 1909 (Engine 1905)

Displacement:
   4,329 t light; 4,640 t standard; 5,500 t normal; 6,188 t full load

Dimensions: Length overall / water x beam x draught
   370.00 ft / 370.00 ft x 54.00 ft x 19.00 ft (normal load)
   112.78 m / 112.78 m x 16.46 m  x 5.79 m

Armament:
      4 - 6.00" / 152 mm guns in single mounts, 100.00lbs / 45.36kg shells, 1905 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      2 - 6.00" / 152 mm guns in single mounts, 100.00lbs / 45.36kg shells, 1905 Model
     Quick firing guns in deck mounts with hoists
     on centreline, all amidships, 1 raised mount
      8 - 6.00" / 152 mm guns in single mounts, 100.00lbs / 45.36kg shells, 1909 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
     8 guns in hull casemates - Limited use in all but light seas
      10 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1909 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread, 4 raised mounts
      4 - 2.00" / 50.8 mm guns in single mounts, 3.00lbs / 1.36kg shells, 1909 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 1,712 lbs / 777 kg
   Shells per gun, main battery: 185
   4 - 18.0" / 457.2 mm above water torpedoes, 2 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.50" / 13 mm         -               -
   2nd:   0.50" / 13 mm         -               -
   3rd:   0.50" / 13 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 20,567 shp / 15,343 Kw = 23.25 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 1,548 tons (100% coal)

Complement:
   319 - 415

Cost:
   £0.585 million / $2.342 million

Distribution of weights at normal displacement:
   Armament: 231 tons, 4.2 %
   Armour: 571 tons, 10.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 35 tons, 0.6 %
      - Armour Deck: 496 tons, 9.0 %
      - Conning Tower: 40 tons, 0.7 %
   Machinery: 1,714 tons, 31.2 %
   Hull, fittings & equipment: 1,752 tons, 31.9 %
   Fuel, ammunition & stores: 1,171 tons, 21.3 %
   Miscellaneous weights: 60 tons, 1.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,236 lbs / 1,468 Kg = 30.0 x 6.0 " / 152 mm shells or 0.7 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 12.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0.38
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.507
   Length to Beam Ratio: 6.85 : 1
   'Natural speed' for length: 19.24 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 64
   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:      19.00 ft / 5.79 m
      - Forecastle (20 %):   19.00 ft / 5.79 m
      - Mid (50 %):      19.00 ft / 5.79 m (10.00 ft / 3.05 m aft of break)
      - Quarterdeck (15 %):   10.00 ft / 3.05 m
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   14.50 ft / 4.42 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 140.3 %
      - Above water (accommodation/working, high = better): 101.8 %
   Waterplane Area: 13,399 Square feet or 1,245 Square metres
   Displacement factor (Displacement / loading): 93 %
   Structure weight / hull surface area: 85 lbs/sq ft or 415 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.07
      - 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

May cut out the amidships mounts for space consideration or maybe put more in casemates i.e. OTL USN PC Cincinnati (14x1x6" most in casemate)