Drayahendag - Training Flight Deck Carrier

[Kaiser Kirk]

Drayahendag - Seabird, Parthian  Flight Deck Carrier laid down 1930

Displacement:
   9,000 t light; 9,292 t standard; 10,208 t normal; 10,941 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (521.91 ft / 515.09 ft) x 65.62 ft x (19.69 / 20.79 ft)
   (159.08 m / 157.00 m) x 20.00 m  x (6.00 / 6.34 m)

Armament:
      8 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 214 per gun
     Quick firing guns in casemate mounts, 1930 Model
     8 x Single mounts on sides, evenly spread
      8 hull mounts in casemates- Limited use in heavy seas
      4 - 3.54" / 90.0 mm 54.0 cal guns - 24.25lbs / 11.00kg shells, 400 per gun
     Breech loading guns in deck mounts, 1930 Model
     4 x Single mounts on side ends, evenly spread
      8 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 400 per gun
     Anti-air guns in deck mounts, 1930 Model
     8 x Single mounts on side ends, evenly spread
      36 - 0.59" / 15.0 mm 90.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1930 Model
     10 x Twin mounts on sides, evenly spread
     4 x Quad mounts on side ends, evenly spread
      Weight of broadside 556 lbs / 252 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.31" / 8 mm   0.31" / 8 mm      0.31" / 8 mm
   2nd:   0.31" / 8 mm         -               -
   3rd:   0.31" / 8 mm   0.31" / 8 mm      0.31" / 8 mm
   4th:   0.31" / 8 mm         -               -

   - Box over machinery & magazines:
   2.95" / 75 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 41,314 shp / 30,820 Kw = 26.00 kts
   Range 8,170nm at 14.00 kts
   Bunker at max displacement = 1,649 tons

Complement:
   507 - 660

Cost:
   £2.166 million / $8.663 million

Distribution of weights at normal displacement:
   Armament: 97 tons, 0.9 %
      - Guns: 97 tons, 0.9 %
   Armour: 709 tons, 6.9 %
      - Armament: 33 tons, 0.3 %
      - Armour Deck: 655 tons, 6.4 %
      - Conning Tower: 20 tons, 0.2 %
   Machinery: 1,252 tons, 12.3 %
   Hull, fittings & equipment: 3,742 tons, 36.7 %
   Fuel, ammunition & stores: 1,208 tons, 11.8 %
   Miscellaneous weights: 3,200 tons, 31.3 %
      - Hull below water: 1,690 tons
      - Hull void weights: 30 tons
      - Hull above water: 1,380 tons
      - On freeboard deck: 5 tons
      - Above deck: 95 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     22,331 lbs / 10,129 Kg = 423.5 x 4.7 " / 120 mm shells or 2.4 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 4.3 ft / 1.3 m
   Roll period: 13.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.537 / 0.545
   Length to Beam Ratio: 7.85 : 1
   'Natural speed' for length: 22.70 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 13.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Forward deck:   30.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Aft deck:   35.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Quarter deck:   15.00 %,  29.53 ft / 9.00 m,  29.53 ft / 9.00 m
      - Average freeboard:      29.53 ft / 9.00 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 76.4 %
      - Above water (accommodation/working, high = better): 258.5 %
   Waterplane Area: 23,303 Square feet or 2,165 Square metres
   Displacement factor (Displacement / loading): 153 %
   Structure weight / hull surface area: 85 lbs/sq ft or 417 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.85
      - Longitudinal: 4.24
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Warning: Beam between bulkheads too wide

A slower, fatter version of the Osprey.
I don't think I'll name this after a bird this time.
'Drayah Xar' is Sea Donkey - a dependable beast of burden.
Drayahendag should be 'Seabird'.

This broader hull theoretically can hold 2162/62= 33 aircraft
taking 2640t = 1320/1320.

33 AC are carried.


Still Intnded as a lightwieght economical alternative to the problem of providing fighter and scout coverage to the fleet.

At 9,000 tons, it only takes 3 HY to build, and is 3/4 the cost of the Bazdari. However, it is extremely vulnerable to raiders.

It has minimal armor and ability to take damage.
A single torpedo, bomb or cruiser shell may cripple it.


The vessel is 'sized' for 26 planes
allowing 1x 16 to be carried.
with 4 flying spares

Plus 4x Scouts
and and 1 spare

Lastly, a mail plane.

For 26 planes

The single  "mail plane"  carried, with a removable set of seats allowing either critical cargo or passengers.

Flight Calculations
Single Hanger : wp/65
80 tons / plane
9m FD = 1 hanger



Misc Weight
Reserve :
50t

AD
10t-  Fire Control 1918
25t-  Hulesmeyer
25t- Searchlights (NF)
25t-  LR Radio
10t-  SR Radio - Air Command
  0t-  SR Radio


OD
  5t  - Paravanes

HAW
1320 - Airgroup (33)
30t - 2x Additional Ventilation
30t - 2x Additional Fire Suppresion.

HBW
1320t - Airgroup
15t - Additional Fire Suppression
15t - Additional pumps
100t - additional fuel in doublewall tanks
30t - additional  munitions
160t - Torpedo Nets.
30t - Auxiliary Diesel Generator

Decks :
9.00   Flight Deck
4.50   Battery Deck / Hanger floor
2.00   Armored Deck
-0.50  2nd Deck, lower edge of fore/aft PD.
          -1.0 Bottom Belt
-3.00  1st Deck
-6.50  Engineering
-7.81  Double Bottom
-8.6  Keel