Esc Dd

[ledeper]

Dd 40-50, Esc Dd laid down 1920

Displacement:
   1.467 t light; 1.528 t standard; 1.972 t normal; 2.327 t full load

Dimensions: Length overall / water x beam x draught
   386,87 ft / 383,86 ft x 41,01 ft x 11,15 ft (normal load)
   117,92 m / 117,00 m x 12,50 m  x 3,40 m

Armament:
      4 - 4,92" / 125 mm guns (2x2 guns), 59,59lbs / 27,03kg shells, 1920 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 4,92" / 125 mm guns in single mounts, 59,59lbs / 27,03kg shells, 1920 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread, all raised mounts
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 365 lbs / 166 kg
   Shells per gun, main battery: 100
   4 - 19,7" / 500 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 27.279 shp / 20.350 Kw = 30,00 kts
   Range 9.800nm at 14,00 kts
   Bunker at max displacement = 799 tons

Complement:
   147 - 192

Cost:
   £0,496 million / $1,985 million

Distribution of weights at normal displacement:
   Armament: 46 tons, 2,3 %
   Machinery: 859 tons, 43,6 %
   Hull, fittings & equipment: 492 tons, 24,9 %
   Fuel, ammunition & stores: 505 tons, 25,6 %
   Miscellaneous weights: 70 tons, 3,6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     709 lbs / 322 Kg = 11,9 x 4,9 " / 125 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,56
   Metacentric height 2,8 ft / 0,8 m
   Roll period: 10,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,15
   Seaboat quality  (Average = 1.00): 1,06

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,393
   Length to Beam Ratio: 9,36 : 1
   'Natural speed' for length: 19,59 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:      17,06 ft / 5,20 m
      - Forecastle (20 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   13,12 ft / 4,00 m
      - Stern:      13,12 ft / 4,00 m
      - Average freeboard:   13,44 ft / 4,10 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 161,9 %
      - Above water (accommodation/working, high = better): 138,9 %
   Waterplane Area: 9.654 Square feet or 897 Square metres
   Displacement factor (Displacement / loading): 84 %
   Structure weight / hull surface area: 33 lbs/sq ft or 161 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 0,86
      - Overall: 0,53
   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

Trail speed 30.5 knts
Range at max speed:1200 Nm
Torpedoes24 tns (1 reload)
L/RW/L 25tns
Reserve 24 tns(for depthcharges/throwers)

[Guinness]

Guinness DD boilderplate: Too slow, too heavily armed, too much freeboard, BC too low for a ship of this design.

Feel free to ignore me on this like everyone else does.  :P

[Jefgte]

This is not really a DD (too slow) but a kind of DE (Deffender - Protector)

Add more torpedoes...


Jef

[Sachmle]

9800nm@14!?! Too much range. Cut it to 5,000 @ 14 and put the savings into speed. 30kts is WAAAAAY to slow for a DD anymore.

As to the armament: I can swallow 6x125 I suppose, considering what your admirals see when they look towards Den Hague. At least you went with singles over twins to save on top weight, however I think it might be better to do a dropped aft deck w/ aXy twins. That way X is on the same level as a and y is down a deck aft. That would probably fit better too.

[ledeper]

Dd 40-50, Esc Dd laid down 1920

Displacement:
   1.500 t light; 1.553 t standard; 1.770 t normal; 1.944 t full load

Dimensions: Length overall / water x beam x draught
   386,87 ft / 383,86 ft x 41,01 ft x 10,17 ft (normal load)
   117,92 m / 117,00 m x 12,50 m  x 3,10 m

Armament:
      4 - 4,92" / 125 mm guns (2x2 guns), 59,59lbs / 27,03kg shells, 1920 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      1 - 4,92" / 125 mm guns in single mounts, 59,59lbs / 27,03kg shells, 1920 Model
     Quick firing gun in deck mounts
     on centreline, all forward, 1 raised gun
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 306 lbs / 139 kg
   Shells per gun, main battery: 100
   4 - 19,7" / 500 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 35.455 shp / 26.450 Kw = 32,50 kts
   Range 5.000nm at 14,00 kts
   Bunker at max displacement = 391 tons

Complement:
   136 - 177

Cost:
   £0,501 million / $2,005 million

Distribution of weights at normal displacement:
   Armament: 38 tons, 2,2 %
   Machinery: 910 tons, 51,4 %
   Hull, fittings & equipment: 481 tons, 27,2 %
   Fuel, ammunition & stores: 270 tons, 15,3 %
   Miscellaneous weights: 70 tons, 4,0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     486 lbs / 220 Kg = 8,1 x 4,9 " / 125 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,43
   Metacentric height 2,4 ft / 0,7 m
   Roll period: 11,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 65 %
         - Recoil effect (Restricted arc if above 1.00): 0,13
   Seaboat quality  (Average = 1.00): 0,84

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,387
   Length to Beam Ratio: 9,36 : 1
   'Natural speed' for length: 19,59 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 77
   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:      17,06 ft / 5,20 m
      - Forecastle (20 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   13,12 ft / 4,00 m
      - Stern:      13,12 ft / 4,00 m
      - Average freeboard:   13,44 ft / 4,10 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 186,2 %
      - Above water (accommodation/working, high = better): 149,7 %
   Waterplane Area: 9.626 Square feet or 894 Square metres
   Displacement factor (Displacement / loading): 62 %
   Structure weight / hull surface area: 33 lbs/sq ft or 161 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 0,87
      - Overall: 0,52
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Trail speed 37.5 knts
Range at max speed:1200 Nm
Torpedoes24 tns (1 reload)
L/RW/L 25tns
Reserve 21 tns(for depthcharges/throwers)

[TexanCowboy]

I'm not sure what you're doing, but I highly doubt that the trial speed would be 37.5 knots.

[ledeper]

You are right,my mistake :
Trial speed =33 knts