TB/DD's?

[miketr]

How are you guys handling TB/DD's?

Michael

[Jefgte]

LD from 1895-1899
Max disp 500t light
TT:16" diam
Block coef: 0.38 min
Lenght to beam ratio : max 12:1
Cross sectionnal: 0.5 min

----

TB3-500t, France TB3-500t laid down 1899

Displacement:
   500 t light; 516 t standard; 595 t normal; 659 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (266.00 ft / 266.00 ft) x 26.60 ft x (7.75 / 8.26 ft)
   (81.08 m / 81.08 m) x 8.11 m  x (2.36 / 2.52 m)

Armament:
      2 - 3.95" / 100 mm 45.0 cal guns - 31.09lbs / 14.10kg shells, 100 per gun
     Quick firing guns in deck mounts, 1899 Model
     2 x Single mounts on centreline ends, evenly spread
      2 - 2.56" / 65.0 mm 55.0 cal guns - 9.06lbs / 4.11kg shells, 120 per gun
     Quick firing guns in deck mounts, 1899 Model
     2 x Single mounts on sides, forward deck aft
      2 - 0.30" / 7.6 mm 55.0 cal guns - 0.01lbs / 0.00kg shells, 500 per gun
     Machine guns in deck mounts, 1899 Model
     2 x Single mounts on sides, forward deck centre
      Weight of broadside 80 lbs / 36 kg
      Main Torpedoes
      2 - 15.8" / 400 mm, 13.13 ft / 4.00 m torpedoes - 0.367 t each, 0.734 t total
   In 2 sets of deck mounted carriage/fixed tubes
      2nd Torpedoes
      2 - 15.8" / 400 mm, 13.13 ft / 4.00 m torpedoes - 0.367 t each, 0.734 t total
   In 2 sets of deck mounted centre rotating tubes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.20" / 5 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 7 584 ihp / 5 658 Kw = 25.40 kts
   Range 3 000nm at 10.00 kts
   Bunker at max displacement = 142 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   59 - 78

Cost:
   £0.070 million / $0.280 million

Distribution of weights at normal displacement:
   Armament: 18 tons, 3.0 %
      - Guns: 16 tons, 2.6 %
      - Weapons: 2 tons, 0.4 %
   Armour: 1 tons, 0.2 %
      - Armament: 1 tons, 0.2 %
   Machinery: 346 tons, 58.1 %
   Hull, fittings & equipment: 125 tons, 21.0 %
   Fuel, ammunition & stores: 96 tons, 16.0 %
   Miscellaneous weights: 10 tons, 1.7 %
      - On freeboard deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     137 lbs / 62 Kg = 4.4 x 4.0 " / 100 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.61
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 9.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.09
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.380 / 0.394
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 16.31 kts
   Power going to wave formation at top speed: 58 %
   Trim (Max stability = 0, Max steadiness = 100): 72
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  10.00 ft / 3.05 m,  11.00 ft / 3.35 m
      - Forward deck:   30.00 %,  8.50 ft / 2.59 m,  8.00 ft / 2.44 m
      - Aft deck:   25.00 %,  8.00 ft / 2.44 m,  7.50 ft / 2.29 m
      - Quarter deck:   25.00 %,  7.50 ft / 2.29 m,  7.20 ft / 2.19 m
      - Average freeboard:      8.37 ft / 2.55 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 193.9 %
      - Above water (accommodation/working, high = better): 92.2 %
   Waterplane Area: 4 298 Square feet or 399 Square metres
   Displacement factor (Displacement / loading): 24 %
   Structure weight / hull surface area: 20 lbs/sq ft or 99 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.71
      - Overall: 0.51
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

Trial Speed: 28kts
Bonus:2.6

[KWorld]

Actually, there's a tech break here: in 1899 you get better torps than Jef's mounted on his DD there, you can use full size 18" fish.  Before 1899, though, you have shorter ranged torps.

[Delta Force]

Actually, there's a tech break here: in 1899 you get better torps than Jef's mounted on his DD there, you can use full size 18" fish.  Before 1899, though, you have shorter ranged torps.

I'm using the pre-1899 18 inch torpedoes (it's been mentioned there may have been a typo on the second 1890 16 inch torpedo) and will just replace them after the start. Would be metagaming for everyone to have their destroyers come out in 1899.

[Tanthalas]

I agree, I wasnt trying to metagame, it just turned out as I aloted slip and dock space (and BP) that 1899 was Destroyer year.

Actually, there's a tech break here: in 1899 you get better torps than Jef's mounted on his DD there, you can use full size 18" fish.  Before 1899, though, you have shorter ranged torps.

I'm using the pre-1899 18 inch torpedoes (it's been mentioned there may have been a typo on the second 1890 16 inch torpedo) and will just replace them after the start. Would be metagaming for everyone to have their destroyers come out in 1899.