DD-Carrier

[TexanCowboy]

This is pretty futuristic, but what about a destroyer-carrier to run with the flotilla's, but being small enough to mass produce at a rate of 2 for every 8 regular ships. Here's my attempt, built to 1918 destroyer tech.

Epic Fail, NS Destroyer Carrier laid down 1920 (Engine 1916)

Displacement:
   1,975 t light; 2,035 t standard; 2,343 t normal; 2,590 t full load

Dimensions: Length overall / water x beam x draught
   330.00 ft / 330.00 ft x 35.00 ft x 14.20 ft (normal load)
   100.58 m / 100.58 m x 10.67 m  x 4.33 m

Armament:
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1920 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
     2 guns in hull casemates - Limited use in heavy seas
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1920 Model
     Quick firing guns in deck mounts
     on side, all amidships
     2 guns in hull casemates - Limited use in heavy seas
      3 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
     3 guns in hull casemates - Limited use in heavy seas
   Weight of broadside 130 lbs / 59 kg
   Shells per gun, main battery: 150
   2 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:

   - Armour deck: 0.75" / 19 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 35,096 shp / 26,182 Kw = 30.00 kts
   Range 7,500nm at 12.00 kts
   Bunker at max displacement = 555 tons

Complement:
   167 - 218

Cost:
   £0.571 million / $2.282 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 0.7 %
   Armour: 107 tons, 4.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 0 tons, 0.0 %
      - Armour Deck: 107 tons, 4.6 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1,133 tons, 48.4 %
   Hull, fittings & equipment: 503 tons, 21.5 %
   Fuel, ammunition & stores: 368 tons, 15.7 %
   Miscellaneous weights: 216 tons, 9.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     572 lbs / 259 Kg = 17.9 x 4.0 " / 102 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.35
   Metacentric height 1.8 ft / 0.5 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 58 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.500
   Length to Beam Ratio: 9.43 : 1
   'Natural speed' for length: 18.17 kts
   Power going to wave formation at top speed: 68 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:      16.00 ft / 4.88 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      16.00 ft / 4.88 m
      - Quarterdeck (15 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   16.00 ft / 4.88 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 185.0 %
      - Above water (accommodation/working, high = better): 140.4 %
   Waterplane Area: 7,695 Square feet or 715 Square metres
   Displacement factor (Displacement / loading): 76 %
   Structure weight / hull surface area: 31 lbs/sq ft or 153 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.21
      - Overall: 0.58
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent

8 planes/ 200 tons
2 torpedoes/ 2 tons
"ears"/ 5 tons(short range, 7 miles?)
radar/ 5 tons(short range, 40 miles?)
misc/ 4 tons

Comments? Thoughts? Trying to be different. Next up, the Gran Columbia version. ;D

[Guinness]

330x35ish feet is really small for a flight deck, or is the assumption she'd carry floatplanes?

[TexanCowboy]

The assumption is that she would carry a small plane, about 30 feet wide, with folding wings. I don't want to use floatplanes, for the sake of eccetrity.

[hooper82]

The assumption is that she would carry a small plane, about 30 feet wide, with folding wings. I don't want to use floatplanes, for the sake of eccetrity.

Yeah, you could have no island (30' wide plane on a 35f wide ship), you could only have one aircraft on the deck at a time (launching or landing) and I wouldn't want to be the pilot trying to land on a 100meter flight deck on a small 2kton ship getting tossed around.  The Independence Class had a deck twice your length and 5 times your displacement and where considered pretty crappy carriers.  Even CVE's had a deplacement of 10kton+ and length of 150meters.

Also, the weight of Radar and EARS is 25t? or 50t?  Have to check the rules page.

You could make a decent flotilla leader style DL / CL that could launch 2-4 floatplanes, infact I had planned to do this with the UNK.  However, I'm not sure about fitting even half your compliment of aircraft (in seaplane form) on a 2kton hull.

[TexanCowboy]

Its called the Epic Fail for a reason.

[Walter]

For a pilot who takes off from that ship, if he has not enough speed, it will be an Epic Fall for him from the end of the flightdeck. :D

[TexanCowboy]

Fail, Fail, Fail, Epicity Fail(To the tune of the Spam song)
It is biplanes, though.  ;D ;D

[Tanthalas]

Fail, Fail, Fail, Epicity Fail(To the tune of the Spam song)
It is biplanes, though.  ;D ;D

im not sure id even want to see someone try to fly a plane off that thing...

[Blooded]

The converted Engadine ferries had 4 or so floatplanes (short 184s) on around 2000(somewhat less I believe). But a wheeled aircraft? No thanks... epic fail is appropriate.

[maddox]

How big was the first lying off deck?

Hint, it was a USN test...

[Blooded]

About 30'? the BB turret one at least. Its the landing and/or tossing about that would concern me the most.

[Desertfox]

A plane can take off from anywhere, landing is the problem.

A quick and dirty idea. Ideal as an instant airfield at any one of my million atolls.

New Switzerland Pocket Carrier laid down 1916

Displacement:
   1,497 t light; 1,530 t standard; 1,676 t normal; 1,792 t full load

Dimensions: Length overall / water x beam x draught
   400.00 ft / 400.00 ft x 40.00 ft x 9.40 ft (normal load)
   121.92 m / 121.92 m x 12.19 m  x 2.87 m

Armament:
      8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1916 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 16 lbs / 7 kg
   Shells per gun, main battery: 0

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 23,986 shp / 17,893 Kw = 30.00 kts
   Range 2,500nm at 15.00 kts
   Bunker at max displacement = 262 tons

Complement:
   130 - 170

Cost:
   £0.267 million / $1.069 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.1 %
   Machinery: 781 tons, 46.6 %
   Hull, fittings & equipment: 464 tons, 27.7 %
   Fuel, ammunition & stores: 179 tons, 10.7 %
   Miscellaneous weights: 250 tons, 14.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     618 lbs / 280 Kg = 5.7 x 6 " / 152 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 2.1 ft / 0.6 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.390
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   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:      20.00 ft / 6.10 m
      - Forecastle (25 %):   14.00 ft / 4.27 m
      - Mid (40 %):      14.00 ft / 4.27 m
      - Quarterdeck (20 %):   14.00 ft / 4.27 m
      - Stern:      12.00 ft / 3.66 m
      - Average freeboard:   14.40 ft / 4.39 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 167.5 %
      - Above water (accommodation/working, high = better): 201.0 %
   Waterplane Area: 9,797 Square feet or 910 Square metres
   Displacement factor (Displacement / loading): 82 %
   Structure weight / hull surface area: 30 lbs/sq ft or 146 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.51
      - Longitudinal: 0.92
      - Overall: 0.54
   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
   Good seaboat, rides out heavy weather easily