Egyptian Naval Research and Development

[snip]

It doesnt help much against pure oil-fired ships.

[Darman]

Better than nothing though. 

[Darman]

Oh, and here is the latest (joint) design with the help of the Romanian Naval R&D team:

Eygptian Paudling, Egypt/Romania Destroyer laid down 1919 (Engine 1912)

Displacement:
   749 t light; 783 t standard; 866 t normal; 933 t full load

Dimensions: Length overall / water x beam x draught
   280.00 ft / 280.00 ft x 26.20 ft x 9.75 ft (normal load)
   85.34 m / 85.34 m x 7.99 m  x 2.97 m

Armament:
      4 - 3.50" / 88.9 mm guns in single mounts, 20.00lbs / 9.07kg shells, 1919 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 1 raised mount aft
      2 - 3.50" / 88.9 mm guns in single mounts, 20.00lbs / 9.07kg shells, 1919 Model
     Breech loading guns in deck mounts
     on side, all amidships
   Weight of broadside 120 lbs / 54 kg
   Shells per gun, main battery: 225
   6 - 18.0" / 457.2 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 23,606 shp / 17,610 Kw = 31.50 kts
   Range 2,520nm at 13.00 kts
   Bunker at max displacement = 150 tons

Complement:
   79 - 103

Cost:
   £0.230 million / $0.919 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.9 %
   Machinery: 468 tons, 54.0 %
   Hull, fittings & equipment: 259 tons, 29.9 %
   Fuel, ammunition & stores: 117 tons, 13.5 %
   Miscellaneous weights: 6 tons, 0.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     214 lbs / 97 Kg = 10.0 x 3.5 " / 89 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.27
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 10.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.24
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.424
   Length to Beam Ratio: 10.69 : 1
   'Natural speed' for length: 16.73 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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 (19 %):   16.00 ft / 4.88 m
      - Mid (50 %):      10.00 ft / 3.05 m
      - Quarterdeck (15 %):   10.00 ft / 3.05 m
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   12.39 ft / 3.78 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 189.9 %
      - Above water (accommodation/working, high = better): 73.9 %
   Waterplane Area: 4,587 Square feet or 426 Square metres
   Displacement factor (Displacement / loading): 43 %
   Structure weight / hull surface area: 26 lbs/sq ft or 128 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.42
      - Overall: 0.58
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

6 tons-torpedos

[snip]

guess I could still be using oars... ;D

[Darman]

Using stolen Viking longboats?   ::)

[snip]

Nah, I would have to go for Triremes  ;D

[Darman]

Lol, nice choice.  I approve.  Although will they be Athenian, Spartan, Corinthian, or Persian Triremes? 

[snip]

Athenian most likely

[Sachmle]

You last DD suffers from NEDS syndrome, I think.
Sorry Borys, I beat ya to it.

[Darman]

You last DD suffers from NEDS syndrome, I think.
Sorry Borys, I beat ya to it.

NEDS?

[miketr]

NOT ENOUGH DECK SPACE

IE you are cramming too many guns and torpedo's onto the deck.

Michael

[Darman]

Gotcha... how would I tell if there is enough deck space? 

[Logi]

Best way would be to draw it. But if you don't want to, you could measure the thing length wise.

For example...

The 88mm  gun is just a tad over 13' long.

Give 5 feet of working space behind each gun and you have four of them so...

2x (13' + 5') + 2x (6' + 5') [Superfiring] = 58' for the guns themselves (not counting the space for the rounds etc.)

Each TT is ~24' long give 5' working space. Assuming you are using Triple TTs, 63' for the TTs.

Total for Guns and TTs is 121'.

You ship's length starts after forecastle and ends before quarterdeck so... 280' x 66% = 184.8'.

So you have 184.8' - 121' = 63.8' for the Superstructure and wing guns.

NEDS

[Darman]

So how long is the superstructure usually?  13' for the wing turrets (roughly)

[Sachmle]

Use this as a sight example. It's 17' shorter, but has half as many guns and is oil fired. You're trying to fit 2x as many guns, plus another triple TT launcher. The TT launcher alone is longer (24') than the amount of extra length you have (17').