Scout Cruiser

[ledeper]

Scout Cruiser, BCS Ligth Scout  Cruiser laid down 1916 (Engine 1914)

Displacement:
   5.000 t light; 5.205 t standard; 6.119 t normal; 6.850 t full load

Dimensions: Length overall / water x beam x draught
   512,90 ft / 508,53 ft x 49,21 ft x 21,33 ft (normal load)
   156,33 m / 155,00 m x 15,00 m  x 6,50 m

Armament:
      8 - 5,91" / 150 mm guns (4x2 guns), 102,98lbs / 46,71kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 954 lbs / 433 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,98" / 25 mm      0,98" / 25 mm

   - Conning tower: 3,94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 53.555 shp / 39.952 Kw = 30,70 kts
   Range 8.000nm at 14,00 kts
   Bunker at max displacement = 1.645 tons

Complement:
   345 - 449

Cost:
   £0,923 million / $3,691 million

Distribution of weights at normal displacement:
   Armament: 119 tons, 1,9 %
   Armour: 63 tons, 1,0 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 35 tons, 0,6 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 28 tons, 0,5 %
   Machinery: 2.063 tons, 33,7 %
   Hull, fittings & equipment: 2.355 tons, 38,5 %
   Fuel, ammunition & stores: 1.119 tons, 18,3 %
   Miscellaneous weights: 400 tons, 6,5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4.171 lbs / 1.892 Kg = 40,5 x 5,9 " / 150 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,21
   Metacentric height 2,5 ft / 0,8 m
   Roll period: 13,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0,41
   Seaboat quality  (Average = 1.00): 1,19

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,401
   Length to Beam Ratio: 10,33 : 1
   'Natural speed' for length: 22,55 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      24,80 ft / 7,56 m
      - Forecastle (20 %):   15,78 ft / 4,81 m
      - Mid (50 %):      15,78 ft / 4,81 m
      - Quarterdeck (15 %):   15,78 ft / 4,81 m
      - Stern:      15,78 ft / 4,81 m
      - Average freeboard:   16,50 ft / 5,03 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 131,4 %
      - Above water (accommodation/working, high = better): 123,4 %
   Waterplane Area: 15.416 Square feet or 1.432 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 87 lbs/sq ft or 424 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,95
      - Longitudinal: 1,69
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent

[Borys]

No armour? Not even as splinters' protection?
Borys

[ledeper]

No ,just the guns and con.Mission :scout and run like H¤#l

[Korpen]

Engine year is incorrect.
All ships in Navalism have one of the following engines years: 1900, 1905, 1909, 1912 or 1916. NEVER any other!

[maddox]

VTE's ain't restricted, only turbines. 

Of course, building a 1950 VTE in 1916 is out of the question.

[P3D]

VTE's ain't restricted, only turbines. 

Of course, building a 1950 VTE in 1916 is out of the question.

VTEs are restricted, too.

[maddox]

Naval Propulsion
1895 Baseline(0): Complex Reciprocating Engines, Engine Year 1900
1902 Advanced (+1): Engine year 1905, Max. Turbine power 5,000 HP/Shaft,
        Direct-drive Turbines
1905 Cutting Edge (+3) Engine year 1909, Max. Turbine power 12,000 HP/Shaft
1909: Engine year 1912, Max. Turbine power 20,000 HP/Shaft
1913: Engine year 1916, Max. Turbine power 35,000 HP/Shaft
1917: Engine year 1920, Max. Turbine power 40,000 HP/Shaft, Engine year = year laid down.

Direct from the rules. For some of us the holy grail, and not to be triffled with.

I do not see any reference to VTE's. Only turbines are mentioned.
Not surprisingly, as you cannot get anywere near the turbine power inside the same weight- and therefore hullstrength- with VTE's for a given speed.

It will take a  miracle to get 1912 VTE over the weight/power ratio of a 1902 (engine year 1905) Turbine.
I didn't test it, but maybe a petrol engine could do it. But then you have a fueltank the size of the ship to get any usefull range and a floating napalm bomb to boot.

[mentat]

I agree with dedicated Scout ships that are specifically optimised for the role - but wonder if this doesn't go too far - i.e. is more like a very large destroyer

In a somewhat similar design recently - I did include some belt protection

At the moment this has no protection of 6" mags vs. even destroyer fire

I wonder if some splinter belt style box protection around the mags wouldn't be a good trade off vs maybe 0.5 knot or so of speed/ slight red'n in range?

[P3D]

Naval Propulsion
1895 Baseline(0): Complex Reciprocating Engines, Engine Year 1900
1902 Advanced (+1): Engine year 1905, Max. Turbine power 5,000 HP/Shaft,
        Direct-drive Turbines
1905 Cutting Edge (+3) Engine year 1909, Max. Turbine power 12,000 HP/Shaft
1909: Engine year 1912, Max. Turbine power 20,000 HP/Shaft
1913: Engine year 1916, Max. Turbine power 35,000 HP/Shaft
1917: Engine year 1920, Max. Turbine power 40,000 HP/Shaft, Engine year = year laid down.

Emphasis mine. Year is not restricted to either VTEs or turbines - esp. as turbines are mentioned after this.

[ledeper]

Nm 01, BCS LR Ligth Cruiser laid down 1917 (Engine 1916)

Displacement:
   6.256 t light; 6.484 t standard; 7.258 t normal; 7.878 t full load

Dimensions: Length overall / water x beam x draught
   512,00 ft / 508,53 ft x 49,21 ft x 21,33 ft (normal load)
   156,06 m / 155,00 m x 15,00 m  x 6,50 m

Armament:
      8 - 5,91" / 150 mm guns (4x2 guns), 102,98lbs / 46,71kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1917 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 954 lbs / 433 kg
   Shells per gun, main battery: 150
   4 - 21,0" / 533,4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5,91" / 150 mm   330,54 ft / 100,75 m   8,43 ft / 2,57 m
   Ends:   Unarmoured
   Upper:   1,97" / 50 mm   330,54 ft / 100,75 m   8,01 ft / 2,44 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm   0,98" / 25 mm      0,98" / 25 mm

   - Armour deck: 1,97" / 50 mm, Conning tower: 5,91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 48.886 shp / 36.469 Kw = 29,00 kts
   Range 9.300nm at 12,00 kts
   Bunker at max displacement = 1.394 tons

Complement:
   393 - 511

Cost:
   £1,044 million / $4,175 million

Distribution of weights at normal displacement:
   Armament: 119 tons, 1,6 %
   Armour: 1.575 tons, 21,7 %
      - Belts: 898 tons, 12,4 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 35 tons, 0,5 %
      - Armour Deck: 594 tons, 8,2 %
      - Conning Tower: 48 tons, 0,7 %
   Machinery: 1.821 tons, 25,1 %
   Hull, fittings & equipment: 2.391 tons, 32,9 %
   Fuel, ammunition & stores: 1.002 tons, 13,8 %
   Miscellaneous weights: 350 tons, 4,8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7.831 lbs / 3.552 Kg = 76,0 x 5,9 " / 150 mm shells or 1,2 torpedoes
   Stability (Unstable if below 1.00): 1,14
   Metacentric height 2,2 ft / 0,7 m
   Roll period: 13,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 57 %
         - Recoil effect (Restricted arc if above 1.00): 0,41
   Seaboat quality  (Average = 1.00): 1,14

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,476
   Length to Beam Ratio: 10,33 : 1
   'Natural speed' for length: 22,55 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19,69 ft / 6,00 m
      - Forecastle (20 %):   15,78 ft / 4,81 m
      - Mid (50 %):      15,78 ft / 4,81 m
      - Quarterdeck (15 %):   15,78 ft / 4,81 m
      - Stern:      15,78 ft / 4,81 m
      - Average freeboard:   16,09 ft / 4,91 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99,7 %
      - Above water (accommodation/working, high = better): 111,1 %
   Waterplane Area: 16.320 Square feet or 1.516 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 85 lbs/sq ft or 415 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,44
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate

200 mines  200tns
FC 100tns
L/R W/L 25 tns
Torpedoes 5 tns

[Korpen]

Nm 01, BCS LR Ligth Cruiser laid down 1917 (Engine 1916)

Given her size, I think she is far too slow; 30-31kts would be what i recommend for a scout of that size. I also think that the general balance between armour, speed and firepower is a bit off. Her main belt is thick, but very narrow at only 2,5m, making it thinner (around 10cm) and much more extensive would be a good idea, and have almost no effect on her mission capability. This is due to the fact that the guns that defeat 10-12cm at "cruiser" combat range usually defeat 15cm as well. Deck armour could be reduced as well; 3-4cm is enough to keep out splinters and medium calibre shells at combat ranges.

Her depth in relation to her beam is on the high side as well.