Rohan ships 1916, 1917, & Beyond

[Ithekro]

I would assume there are gravity catapults at this time.  Not as fast as a black powder one, but with enough wieght could at least get the aircraft in motion to provide some lift and thrust verses just he engines, and to overcome a bit of the drag of the aircraft.

I'll assume this will be the smallest Aviation Vessel of the Mark...hence "Sting".

[Nobody]

down 1919 (Engine 1920)

Is that allowed? I mean right now the rules says both "engine year 1920" and "engine year = year laid down". Shouldn't this be clarified?

[maddox]

Rohan was researching certain things when the Tech tree got adapted. This gave a bonus to some other research. Rohans player elected to boost the engine research with that bonus.
So it is possible to have engines that are bleeding edge, and early.

[Tanthalas]

I would assume there are gravity catapults at this time.  Not as fast as a black powder one, but with enough wieght could at least get the aircraft in motion to provide some lift and thrust verses just he engines, and to overcome a bit of the drag of the aircraft.

I'll assume this will be the smallest Aviation Vessel of the Mark...hence "Sting".

Actualy Naming it Sting was just to keep it fresh in my mind that Aviation ships are named for weapons, Gravity and Possibly Hydraulic Catapults (unless I missed somthing in the tech rules) should both be hypotheticly possible

[Guinness]

Tech tree:

Aircraft/Seaplane Carriers
1910: experimental aviation ships; automatically granted upon completion of the 1910 Aircraft (1914 models) tech.
1915: floatplanes; flying-off decks for wheeled aircraft
1918: gunpowder catapults for floatplanes; separate landing and taking-off decks for wheeled aircraft
1922: hydraulic catapults; full length decks for wheeled aircraft; arrestor wires
1926: armored box carrier

We don't expect hydraulic catapults until after gunpowder catapults. I didn't include gravity catapults (or flywheels) when drafting this, as I didn't know of any implementations of such that weren't purely experimental in nature.

Truthfully, for aircraft of our era, even floatplanes I'm not sure that a suitably sized ship would even need catapults. A flying off deck/trolly arrangement should get the job done. Catapults aren't going to start being needed until aircraft weight starts climbing later in the 20's.

[Tanthalas]

As originaly invisond Project Sting has been Canceld, ill post the updated incarnation later.

[ctwaterman]

No its not cancled the Italian Version of it simply delayed due to... *looks venimously at Rocky's Dice*  technical difficulties  ;)

[Tanthalas]

No its not cancled the Italian Version of it simply delayed due to... *looks venimously at Rocky's Dice*  technical difficulties  ;)

LOL, Rohan also discoverd "technical difficulties" with the proposal (mostly I realised once I actualy thought about it that I could do somthing very similar on less tonage)  :P

[ctwaterman]

No its not cancled the Italian Version of it simply delayed due to... *looks venimously at Rocky's Dice*  technical difficulties  ;)

LOL, Rohan also discoverd "technical difficulties" with the proposal (mostly I realised once I actualy thought about it that I could do somthing very similar on less tonage)  :P

Well the Fly wheel or Gravity Catapults just are not powerful enought to launch a radio equiped Scout Plane into the air.  A small fast ship with a roll of deck might do the same but the Italian Design is going to look an awful lot like the US Omaha class Cruisers.

I mean honestly I really dont need an Aircraft Carrier in the Mediteranian right now especially with large numbers of Land Bases Heavy Bomber type Aircraft the Ca.36 and a few Hundred Twin Engined Float Planes or Flying Boats.

I honestly dont expect the Empire to build anything more then Float Plane Tenders in the near future.

[Tanthalas]

ok Final version of CLX.  Opinions welcome (but it will all fit)

CLX, Rohan Light Cruiser laid down 1917 (Engine 1920)

Displacement:
   6,000 t light; 6,260 t standard; 7,530 t normal; 8,546 t full load

Dimensions: Length overall / water x beam x draught
   557.00 ft / 550.00 ft x 55.00 ft x 20.00 ft (normal load)
   169.77 m / 167.64 m x 16.76 m  x 6.10 m

Armament:
      12 - 6.00" / 152 mm guns (6x2 guns), 108.00lbs / 48.99kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on centreline, evenly spread, 3 raised mounts
      2 - 1.50" / 38.1 mm guns (1x2 guns), 1.69lbs / 0.77kg shells, 1917 Model
     Anti-aircraft guns in deck mount
     on centreline aft, all raised guns - superfiring
      4 - 1.50" / 38.1 mm guns (2x2 guns), 1.69lbs / 0.77kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 1,306 lbs / 592 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.00" / 76 mm   385.00 ft / 117.35 m   10.00 ft / 3.05 m
   Ends:   Unarmoured
     Main Belt covers 108 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   2nd:   1.00" / 25 mm   0.50" / 13 mm            -
   3rd:   1.00" / 25 mm   0.50" / 13 mm            -

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 54,673 shp / 40,786 Kw = 30.00 kts
   Range 6,135nm at 19.00 kts
   Bunker at max displacement = 2,286 tons

Complement:
   403 - 525

Cost:
   £1.118 million / $4.471 million

Distribution of weights at normal displacement:
   Armament: 163 tons, 2.2 %
   Armour: 921 tons, 12.2 %
      - Belts: 473 tons, 6.3 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 72 tons, 1.0 %
      - Armour Deck: 351 tons, 4.7 %
      - Conning Tower: 25 tons, 0.3 %
   Machinery: 1,912 tons, 25.4 %
   Hull, fittings & equipment: 2,816 tons, 37.4 %
   Fuel, ammunition & stores: 1,530 tons, 20.3 %
   Miscellaneous weights: 188 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,262 lbs / 3,748 Kg = 76.5 x 6.0 " / 152 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 2.7 ft / 0.8 m
   Roll period: 14.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 76 %
         - Recoil effect (Restricted arc if above 1.00): 0.46
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.436
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 65
   Bow angle (Positive = bow angles forward): 19.30 degrees
   Stern overhang: -4.50 ft / -1.37 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.00 ft / 6.10 m
      - Forecastle (20 %):   20.00 ft / 6.10 m
      - Mid (51 %):      20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
      - Quarterdeck (10 %):   12.00 ft / 3.66 m
      - Stern:      12.00 ft / 3.66 m
      - Average freeboard:   16.08 ft / 4.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.1 %
      - Above water (accommodation/working, high = better): 140.1 %
   Waterplane Area: 19,077 Square feet or 1,772 Square metres
   Displacement factor (Displacement / loading): 121 %
   Structure weight / hull surface area: 92 lbs/sq ft or 449 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.26
      - 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

188 tons Misc. Weight
100 tons FC
  25 tons Radar
  25 tons Marconi
  12 tons Crew Comfort
  25  tons Flying Boat X1
    1 tons Capitans Quarters

[Ithekro]

So an actual Light Cruiser rather that a Belted Cruiser (belt mainly, but also deck, but not heavy like an armored cruiser) or Protected Cruiser (deck only).

Are there defined terms of "light" and "heavy" cruiser in Navalism?  I forget if that has come up yet.

I assume the Aviation Vessel will be something else.

[maddox]

There is no real nomenclatura for cruisers, one of the points of the Richmond agreement.

But, France has mainly protected cruisers left. But those are what we would call light cruisers in the days of the OTL Washington treaty. After the switch to oil, belt armor was placed to replace the lost protection.

[Jefgte]

I agree that's WT name, not Richmond...

But, all Guys understand this denomination & the category of the ship.

Don't use the French classement "second class cruiser" (SCC)

Nobody understand  ???
(not the Player...  :D  :D  :D)


Jef  ;)

[Sachmle]

In all seriousness, I'd dump another 1k into it and use the weight to add more armor, especially the deck and mounts, then use the rest to up speed.

[Tanthalas]

In all seriousness, I'd dump another 1k into it and use the weight to add more armor, especially the deck and mounts, then use the rest to up speed.

Im just not sure 1K tons is worth it for 1 knot .5" deck, and 1" on each mount face.  Especialy when that aditional 1K tons plays havoc with the seakeaping