Mughal Empire Destroyer Design Needed

[ctwaterman]

The Mughal Empire is finally building a few new ships....

For them new means an entirely different thing then to most of us.

Limitations - 1902 Engine Tech, Max of 500 Tons, and Max of 4  Torpedoes of 16" at .5 Tons each.

Guns - Well I need to develop some guns for the Fleet of the Mughal Empire undoubtedly they are probably using and old Foreign model they adopted.

Charles

[maddox]

Warning, Alt history in an Alt history enviroment.

A French design, never build by France because the favoring of larger ships, a fucking huge defensive line of fortresses and trenchlines and a certain canal.
The Mughals aquered the plans, as a partial compensation for the Kolkattan colony.

Parbleu, Mughal/french Torpedo boat destroyer laid down 1902

Displacement:
   448 t light; 460 t standard; 496 t normal; 524 t full load

Dimensions: Length overall / water x beam x draught
   229,66 ft / 229,66 ft x 19,69 ft x 9,84 ft (normal load)
   70,00 m / 70,00 m x 6,00 m  x 3,00 m

Armament:
     2 - 3,00" / 76,2 mm guns in single mounts, 13,50lbs / 6,12kg shells, 1902 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
     2 - 1,00" / 25,4 mm guns in single mounts, 0,50lbs / 0,23kg shells, 1902 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 28 lbs / 13 kg
   Shells per gun, main battery: 150
   4 - 16,0" / 406,4 mm above water torpedoes

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 6.766 ihp / 5.047 Kw = 25,00 kts
  Trial speed 28 kts
   Range 1.500nm at 10,00 kts
   Bunker at max displacement = 64 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   52 - 68

Cost:
   £0,059 million / $0,237 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 0,7%
   Machinery: 290 tons, 58,5%
   Hull, fittings & equipment: 149 tons, 30,1%
   Fuel, ammunition & stores: 48 tons, 9,7%
   Miscellaneous weights: 5 tons, 1,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     124 lbs / 56 Kg = 9,2 x 3,0 " / 76 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,30
   Metacentric height 0,7 ft / 0,2 m
   Roll period: 9,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0,18
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,390
   Length to Beam Ratio: 11,67 : 1
   'Natural speed' for length: 15,15 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -5,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,67 ft / 5,08 m
      - Forecastle (20%):   10,60 ft / 3,23 m
      - Mid (50%):      10,60 ft / 3,23 m
      - Quarterdeck (15%):   10,60 ft / 3,23 m
      - Stern:      10,60 ft / 3,23 m
      - Average freeboard:   11,08 ft / 3,38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 195,1%
      - Above water (accommodation/working, high = better): 69,4%
   Waterplane Area: 2.768 Square feet or 257 Square metres
   Displacement factor (Displacement / loading): 24%
   Structure weight / hull surface area: 20 lbs/sq ft or 96 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,51
      - Longitudinal: 3,96
      - Overall: 0,62
   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
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

8 torpedo's carried

[Korpen]

Quick throw-together before I am off to work :( (People are sick so I lost 2 of my three non-work days this week  >:( )

Baku, Moghul Torpedoboot laid down 1905

Displacement:
   350 t light; 362 t standard; 424 t normal; 474 t full load

Dimensions: Length overall / water x beam x draught
   229,66 ft / 229,66 ft x 19,69 ft x 7,22 ft (normal load)
   70,00 m / 70,00 m x 6,00 m  x 2,20 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1905 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      2 - 0,31" / 8,0 mm guns in single mounts, 0,02lbs / 0,01kg shells, 1905 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 40 lbs / 18 kg
   Shells per gun, main battery: 150
   3 - 16,0" / 406,4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,31" / 8 mm         -               -
   2nd:   0,20" / 5 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 8 713 shp / 6 500 Kw = 27,00 kts (30,7 @ trials)
   Range 1 700nm at 12,00 kts
   Bunker at max displacement = 112 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   46 - 60

Cost:
   £0,050 million / $0,200 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 1,2 %
   Armour: 1 tons, 0,3 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 1 tons, 0,3 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 239 tons, 56,4 %
   Hull, fittings & equipment: 101 tons, 23,8 %
   Fuel, ammunition & stores: 74 tons, 17,4 %
   Miscellaneous weights: 4 tons, 0,9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     95 lbs / 43 Kg = 4,6 x 3,5 " / 88 mm shells or 0,1 torpedoes
   Stability (Unstable if below 1.00): 1,44
   Metacentric height 0,8 ft / 0,3 m
   Roll period: 9,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 62 %
         - Recoil effect (Restricted arc if above 1.00): 0,13
   Seaboat quality  (Average = 1.00): 0,89

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,455
   Length to Beam Ratio: 11,67 : 1
   'Natural speed' for length: 15,15 kts
   Power going to wave formation at top speed: 66 %
   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:      13,12 ft / 4,00 m
      - Forecastle (20 %):   9,84 ft / 3,00 m
      - Mid (40 %):      8,20 ft / 2,50 m
      - Quarterdeck (15 %):   6,56 ft / 2,00 m
      - Stern:      6,56 ft / 2,00 m
      - Average freeboard:   8,34 ft / 2,54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 192,2 %
      - Above water (accommodation/working, high = better): 69,4 %
   Waterplane Area: 2 895 Square feet or 269 Square metres
   Displacement factor (Displacement / loading): 28 %
   Structure weight / hull surface area: 18 lbs/sq ft or 87 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,22
      - Overall: 0,54
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[ctwaterman]

Hmmm wanders around the two Models kicks the Propellers....  interesting very interesting...

[The Rock Doctor]

Pardon the old-school Springstyle report.  Design philosophy is more of a big MTB than a destroyer - everything is based around getting four torpedoes on a fast hull.  In all other respects, it's a piece of crap.

I'm sure it can be refined in Springsharp, but I can't do right now.


v, laid down 1905

     Length, 60.0 m x Beam, 5.0 m x Depth, 2.0 m
          242 tonnes normal displacement (217 tonnes standard)

     Main battery:       2 x  0.8-cm Machine guns

          Weight of broadside: 0 kg

     4 TT, 40.6 cm

     Hull unarmored

     Maximum speed for 6047 shaft kw = 28.50 knots
          Approximate cruising radius, 1400 nm / 10 knots

     Typical complement: 31-40


                    Estimated cost, $113,000 (£28,000)

          Remarks:

     Caution: Hull structure is subject to strain in open-sea
     conditions.

     Caution: Delicate, lightwight machinery.

     Caution: Very cramped ship with excessively poor habitability;
     lacks suitable working space.

     Poor seaboat, wet and uncomfortable; reduced performance
     in heavy weather.

     Magazines and engineering spaces are cramped, with poor
     watertight subdivision.


          Distribution of weights:
                                                       Percent
                                                       normal
                                                    displacement:

          Machinery ........................    149 tonnes =  61 pct
          Hull and fittings; equipment .....     63 tonnes =  26 pct
          Fuel, ammunition, stores .........     30 tonnes =  13 pct
          Miscellaneous weights ............      0 tonnes =   0 pct
                                              -----
                                                242 tonnes = 100 pct

          Estimated metacentric height, 0.1 m

     Displacement summary:

          Light ship:               212 tonnes
          Standard displacement:    217 tonnes
          Normal service:           242 tonnes
          Full load:                261 tonnes

          Loading submergence 164 tonnes/metre

     +++++++++++++++++++++++++


     Estimated overall survivability and seakeeping ability:

          Relative margin of stability: 1.19

          Shellfire needed to sink: 22 kg = 3030.1 x 0.8-cm shells
               (Approximates weight of penetrating
               shell hits needed to sink ship,
               not counting critical hits)

          Torpedoes needed to sink: 0.1
               (Approximates number of 'typical'
               torpedo hits needed to sink ship)

          Relative steadiness as gun platform, 53 percent
               (50 percent is 'average')

          Relative rocking effect from firing to beam, 0.00

          Relative quality as a seaboat: 0.76

     +++++++++++++++++++++++++


     Hull form characteristics:

          Block coefficient: 0.40
          Sharpness coefficient: 0.28
          Hull speed coefficient 'M' = 9.65
          'Natural speed' for length = 14.0 knots
          Power going to wave formation
               at top speed: 69 percent


     Estimated hull characteristics and strength:

          Relative underwater volume absorbed by
               magazines and engineering spaces: 198 percent

          Relative accommodation and working space: 41 percent


          Displacement factor: 18 percent
               (Displacement relative to loading factors)


          Relative cross-sectional hull strength: 0.51
               (Structure weight per square
               metre of hull surface: 84 kg)

          Relative longitudinal hull strength: 1.14
               (for 2.30 m average freeboard;
               freeboard adjustment +0.11 m)

          Relative composite hull strength: 0.55

     +++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

196.80 x 16.40 x 6.56; 7.54 -- Dimensions
0.40 -- Block coefficient
1905 -- Year laid down
28.50 / 1400 / 10.00; Turbine, coal fired -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
2 x 0.31; 0 -- Main battery; turrets
  Central positioning of guns
   :
0 -- No secondary battery
0 -- No tertiary (QF/AA) battery
0 -- No fourth (light) battery
4 / 0 / 15.98 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.00 -- No battery armor


     (Note: For portability, values are stored in Anglo-American units)


     +++++++++++++++++++++++++++++++++++++++++++++++++++++++

[The Rock Doctor]

On the high end scale of things, SS lets me do this.  I think 7465 kw is a smidge higher than 10,000 hp, but SS insists on rounding up to 27.00 kts.

Again, could be refined in 'Sharp.  Not sure if the length is an issue or not.


vv, laid down 1905

     Length, 75.0 m x Beam, 7.5 m x Depth, 2.5 m
          567 tonnes normal displacement (496 tonnes standard)

     Main battery:       3 x  8.8-cm
     Secondary battery:  2 x  0.8-cm

          Weight of broadside: 28 kg

     4 TT, 40.6 cm

     Hull unarmored

     Battery armor:
          Main, 2.0 cm shields / secondary, 1.0 cm
           

     Maximum speed for 7465 shaft kw = 27.00 knots
          Approximate cruising radius, 2500 nm / 10 knots

     Typical complement: 58-76


                    Estimated cost, $267,000 (£67,000)

          Remarks:

     Caution: Hull structure is subject to strain in open-sea
     conditions.

     Caution: Delicate, lightwight machinery.

     Ship has slow, easy roll; a good, steady gun platform.

     Magazines and engineering spaces are cramped, with poor
     watertight subdivision.

     Cramped ship; poor crew accommodation, limited working space.

     Main deck secondary guns subject to being washed down
     in a seaway.


          Distribution of weights:
                                                       Percent
                                                       normal
                                                    displacement:

          Armament .........................      8 tonnes =   1 pct
          Armor, total .....................      2 tonnes =   0 pct

               Armament                           2 tonnes =   0 pct

          Machinery ........................    310 tonnes =  55 pct
          Hull and fittings; equipment .....    145 tonnes =  26 pct
          Fuel, ammunition, stores .........     88 tonnes =  16 pct
          Miscellaneous weights ............     14 tonnes =   2 pct
                                              -----
                                                567 tonnes = 100 pct

          Estimated metacentric height, 0.3 m

     Displacement summary:

          Light ship:               479 tonnes
          Standard displacement:    496 tonnes
          Normal service:           567 tonnes
          Full load:                622 tonnes

          Loading submergence 307 tonnes/metre

     +++++++++++++++++++++++++


     Estimated overall survivability and seakeeping ability:

          Relative margin of stability: 1.34

          Shellfire needed to sink: 61 kg = 6.4 x 8.8-cm shells
               (Approximates weight of penetrating
               shell hits needed to sink ship,
               not counting critical hits)

          Torpedoes needed to sink: 0.2
               (Approximates number of 'typical'
               torpedo hits needed to sink ship)

          Relative steadiness as gun platform, 70 percent
               (50 percent is 'average')

          Relative rocking effect from firing to beam, 0.14

          Relative quality as a seaboat: 1.00

     +++++++++++++++++++++++++


     Hull form characteristics:

          Block coefficient: 0.40
          Sharpness coefficient: 0.30
          Hull speed coefficient 'M' = 9.08
          'Natural speed' for length = 15.7 knots
          Power going to wave formation
               at top speed: 64 percent


     Estimated hull characteristics and strength:

          Relative underwater volume absorbed by
               magazines and engineering spaces: 189 percent

          Relative accommodation and working space: 78 percent


          Displacement factor: 32 percent
               (Displacement relative to loading factors)


          Relative cross-sectional hull strength: 0.51
               (Structure weight per square
               metre of hull surface: 114 kg)

          Relative longitudinal hull strength: 1.11
               (for 3.00 m average freeboard;
               freeboard adjustment +0.40 m)

          Relative composite hull strength: 0.56

     +++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

246.00 x 24.60 x 8.20; 9.84 -- Dimensions
0.40 -- Block coefficient
1905 -- Year laid down
27.00 / 2500 / 10.00; Turbine, coal fired -- Speed / radius / cruise
14 tons -- Miscellaneous weights
++++++++++
3 x 3.46; 0 -- Main battery; turrets
  Central positioning of guns
  Gun-shields
   :
2 x 0.31; 0 -- Secondary battery; turrets
  Main deck battery
   :
0 -- No tertiary (QF/AA) battery
0 -- No fourth (light) battery
4 / 0 / 15.98 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.79 / 0.39 / 0.00 / 0.00 -- Battery armor


     (Note: For portability, values are stored in Anglo-American units)


     +++++++++++++++++++++++++++++++++++++++++++++++++++++++

[Kaiser Kirk]

TGB-1, Mughals Torpedo Gun Boat laid down 1917 (Engine 1905)

Displacement:
   400 t light; 412 t standard; 468 t normal; 513 t full load

Dimensions: Length overall / water x beam x draught
   226.38 ft / 226.38 ft x 25.07 ft x 7.22 ft (normal load)
   69.00 m / 69.00 m x 7.64 m  x 2.20 m

Armament:
      1 - 3.46" / 88.0 mm guns in single mounts, 20.79lbs / 9.43kg shells, 1917 Model
     Breech loading gun in deck mount
     on centreline aft
      1 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1917 Model
     Anti-aircraft gun in deck mount
     on centreline forward, 1 raised gun
      4 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1917 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 22 lbs / 10 kg
   Shells per gun, main battery: 200
   4 - 16.0" / 406.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -
   2nd:   0.39" / 10 mm         -               -
   3rd:   0.39" / 10 mm         -               -

   - Conning tower: 0.79" / 20 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 8,706 shp / 6,495 Kw = 26.50 kts
Trial Speed: 29.72
   Range 1,440nm at 12.00 kts
   Bunker at max displacement = 100 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   49 - 65

Cost:
   £0.097 million / $0.387 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.6 %
   Armour: 3 tons, 0.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2 tons, 0.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 1 tons, 0.2 %
   Machinery: 263 tons, 56.2 %
   Hull, fittings & equipment: 127 tons, 27.1 %
   Fuel, ammunition & stores: 68 tons, 14.5 %
   Miscellaneous weights: 5 tons, 1.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     123 lbs / 56 Kg = 5.9 x 3.5 " / 88 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.44
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 9.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.04
   Seaboat quality  (Average = 1.00): 1.03

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.400
   Length to Beam Ratio: 9.03 : 1
   'Natural speed' for length: 15.05 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   Bow angle (Positive = bow angles forward): -33.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      14.57 ft / 4.44 m
      - Forecastle (25 %):   17.85 ft / 5.44 m (8.01 ft / 2.44 m aft of break)
      - Mid (50 %):      8.01 ft / 2.44 m
      - Quarterdeck (15 %):   8.01 ft / 2.44 m
      - Stern:      9.65 ft / 2.94 m
      - Average freeboard:   10.26 ft / 3.13 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 187.5 %
      - Above water (accommodation/working, high = better): 78.0 %
   Waterplane Area: 3,493 Square feet or 324 Square metres
   Displacement factor (Displacement / loading): 32 %
   Structure weight / hull surface area: 20 lbs/sq ft or 97 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.74
      - Overall: 0.57
   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



A Maxim 37mm AA gun is used for dual use forward and is raised in "B" to fire over the turtledeck bow.

The aft 88mm is located in "X" with the torpedoes in "Y" and Q.  MGs in 1-4 provide AP fire.

Light armor is intended to keep the guncrews functioning in gun battles.

Sufficient fuel is available for 5 days cruise and up to 8 hrs at 24kts.

Misc weight :
2 tons for 4x 16" torpedoes
1 ton extra bilge pumps
1 ton extra forced air for stokers
1 ton unassigned.

[Kaiser Kirk]

I think 7465 kw is a smidge higher than 10,000 hp, but SS insists on rounding up to 27.00 kts.

according to convert its 10010.73,   apparently 7457kw is 10,000. I think that 8kw is a wash.

[Sachmle]

DKB Submission. We feel the likelihood of reloading torpedoes on a 500t boat is slim, hence no reloads.

TB-21, DKB Export/Mughal Torpedobooten laid down 1917 (Engine 1905)

Displacement:
   500 t light; 517 t standard; 610 t normal; 685 t full load

Dimensions: Length overall / water x beam x draught
   230.00 ft / 228.02 ft x 19.00 ft x 11.48 ft (normal load)
   70.10 m / 69.50 m x 5.79 m  x 3.50 m

Armament:
      2 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1917 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
   Weight of broadside 44 lbs / 20 kg
   Shells per gun, main battery: 200
   4 - 16.0" / 406 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 3 shafts, 15,000 shp / 11,190 Kw = 29.07 kts
   Trial speed = 31.75 kts   
   Range 2,000nm at 12.00 kts Range 165nm at 29.07 kts = 5.67 hrs at full speed
   Bunker at max displacement = 168 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   60 - 79

Cost:
   £0.130 million / $0.522 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0.9 %
   Armour: 3 tons, 0.5 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 tons, 0.5 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 356 tons, 58.4 %
   Hull, fittings & equipment: 133 tons, 21.8 %
   Fuel, ammunition & stores: 110 tons, 18.1 %
   Miscellaneous weights: 2 tons, 0.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     99 lbs / 45 Kg = 4.8 x 3.5 " / 88 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 0.5 ft / 0.2 m
   Roll period: 11.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 64 %
         - Recoil effect (Restricted arc if above 1.00): 0.20
   Seaboat quality  (Average = 1.00): 0.80

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.429
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 15.10 kts
   Power going to wave formation at top speed: 68 %
   Trim (Max stability = 0, Max steadiness = 100): 80
   Bow angle (Positive = bow angles forward): 11.40 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      9.84 ft / 3.00 m
      - Forecastle (25 %):   9.02 ft / 2.75 m
      - Mid (50 %):      8.20 ft / 2.50 m
      - Quarterdeck (20 %):   8.20 ft / 2.50 m
      - Stern:      9.02 ft / 2.75 m
      - Average freeboard:   8.67 ft / 2.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 195.6 %
      - Above water (accommodation/working, high = better): 45.7 %
   Waterplane Area: 2,718 Square feet or 253 Square metres
   Displacement factor (Displacement / loading): 24 %
   Structure weight / hull surface area: 21 lbs/sq ft or 101 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.95
      - Overall: 0.57
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

2t = 4 0.5t 40.6cm Torpedoes

[eltf177]

Rock Doctor, here's your V and W-classes in SS2. Had to make a few small adjustments to get rid of hull strain and make them fairly good seaboats. I also added some Misc Wt. to the V-class for torpedoes...

*****

V-class, Mughal Destroyer laid down 1905

Displacement:
   338 t light; 346 t standard; 378 t normal; 404 t full load

Dimensions: Length overall / water x beam x draught
   200.13 ft / 196.85 ft x 18.40 ft x 8.56 ft (normal load)
   61.00 m / 60.00 m x 5.61 m  x 2.61 m

Armament:
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
     Machine guns in deck mounts
     on centreline ends, evenly spread
   Weight of broadside 0 lbs / 0 kg
   Shells per gun, main battery: 150
   4 - 16.0" / 406.4 mm above water torpedoes

Armour:

   - Conning tower: 1.00" / 25 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 11,246 shp / 8,390 Kw = 28.50 kts
   Range 1,400nm at 10.00 kts
   Bunker at max displacement = 58 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   42 - 55

Cost:
   £0.044 million / $0.176 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Armour: 1 tons, 0.3 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 0 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 1 tons, 0.3 %
   Machinery: 229 tons, 60.5 %
   Hull, fittings & equipment: 106 tons, 28.1 %
   Fuel, ammunition & stores: 40 tons, 10.5 %
   Miscellaneous weights: 2 tons, 0.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     81 lbs / 37 Kg = 5,158.8 x 0.3 " / 8 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 62 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.427
   Length to Beam Ratio: 10.70 : 1
   'Natural speed' for length: 14.03 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      15.43 ft / 4.70 m
      - Forecastle (20 %):   12.82 ft / 3.91 m
      - Mid (50 %):      10.82 ft / 3.30 m
      - Quarterdeck (15 %):   9.82 ft / 2.99 m
      - Stern:      9.82 ft / 2.99 m
      - Average freeboard:   11.40 ft / 3.48 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 195.8 %
      - Above water (accommodation/working, high = better): 63.3 %
   Waterplane Area: 2,269 Square feet or 211 Square metres
   Displacement factor (Displacement / loading): 20 %
   Structure weight / hull surface area: 16 lbs/sq ft or 77 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.39
      - Longitudinal: 5.47
      - Overall: 0.50
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Good seaboat, rides out heavy weather easily

*****

W-class, Mughal Destroyer laid down 1905

Displacement:
   514 t light; 532 t standard; 606 t normal; 665 t full load

Dimensions: Length overall / water x beam x draught
   249.73 ft / 246.06 ft x 24.61 ft x 8.20 ft (normal load)
   76.12 m / 75.00 m x 7.50 m  x 2.50 m

Armament:
      3 - 3.46" / 87.9 mm guns in single mounts, 20.71lbs / 9.39kg shells, 1905 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 62 lbs / 28 kg
   Shells per gun, main battery: 150
   4 - 16.0" / 406.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -
   2nd:   0.25" / 6 mm         -               -

   - Conning tower: 2.00" / 51 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 10,603 shp / 7,909 Kw = 27.00 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 134 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   60 - 79

Cost:
   £0.071 million / $0.283 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1.3 %
   Armour: 9 tons, 1.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 5 tons, 0.9 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 3 tons, 0.5 %
   Machinery: 331 tons, 54.6 %
   Hull, fittings & equipment: 153 tons, 25.3 %
   Fuel, ammunition & stores: 92 tons, 15.1 %
   Miscellaneous weights: 14 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     159 lbs / 72 Kg = 7.7 x 3.5 " / 88 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.55
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 9.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 64 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.427
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 15.69 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      17.25 ft / 5.26 m
      - Forecastle (20 %):   10.98 ft / 3.35 m
      - Mid (50 %):      10.98 ft / 3.35 m
      - Quarterdeck (15 %):   10.98 ft / 3.35 m
      - Stern:      10.98 ft / 3.35 m
      - Average freeboard:   11.48 ft / 3.50 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 188.6 %
      - Above water (accommodation/working, high = better): 97.3 %
   Waterplane Area: 3,794 Square feet or 352 Square metres
   Displacement factor (Displacement / loading): 33 %
   Structure weight / hull surface area: 19 lbs/sq ft or 94 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.43
      - Longitudinal: 2.01
      - Overall: 0.50
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

[ctwaterman]

Hmmm looks at the ships presented decisions decisions so many decisions...

Charles

[eltf177]

I had a real problem with the V-class, a DD armed with just two MG's. A little extra displacement and she's now got enough guns to at least fight off enemy TB's and give them a small chance against DD's.

************

V-class revised, Mughal Destroyer laid down 1905

Displacement:
   351 t light; 359 t standard; 392 t normal; 419 t full load

Dimensions: Length overall / water x beam x draught
   200.13 ft / 196.85 ft x 18.40 ft x 8.56 ft (normal load)
   61.00 m / 60.00 m x 5.61 m  x 2.61 m

Armament:
      2 - 1.97" / 50.0 mm guns in single mounts, 3.81lbs / 1.73kg shells, 1905 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 9 lbs / 4 kg
   Shells per gun, main battery: 150
   4 - 16.0" / 406.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.50" / 13 mm         -               -
   2nd:   0.25" / 6 mm         -               -
   3rd:   0.25" / 6 mm         -               -

   - Conning tower: 1.00" / 25 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 11,643 shp / 8,686 Kw = 28.50 kts
   Range 1,400nm at 10.00 kts
   Bunker at max displacement = 59 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   43 - 57

Cost:
   £0.046 million / $0.185 million

Distribution of weights at normal displacement:
   Armament: 1 tons, 0.3 %
   Armour: 2 tons, 0.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 1 tons, 0.3 %
   Machinery: 236 tons, 60.2 %
   Hull, fittings & equipment: 109 tons, 27.8 %
   Fuel, ammunition & stores: 42 tons, 10.6 %
   Miscellaneous weights: 2 tons, 0.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     82 lbs / 37 Kg = 21.5 x 2.0 " / 50 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.27
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 9.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 59 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality  (Average = 1.00): 1.18

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.443
   Length to Beam Ratio: 10.70 : 1
   'Natural speed' for length: 14.03 kts
   Power going to wave formation at top speed: 73 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      15.43 ft / 4.70 m
      - Forecastle (20 %):   12.82 ft / 3.91 m
      - Mid (50 %):      10.82 ft / 3.30 m
      - Quarterdeck (15 %):   9.82 ft / 2.99 m
      - Stern:      9.82 ft / 2.99 m
      - Average freeboard:   11.40 ft / 3.48 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 197.0 %
      - Above water (accommodation/working, high = better): 62.6 %
   Waterplane Area: 2,297 Square feet or 213 Square metres
   Displacement factor (Displacement / loading): 20 %
   Structure weight / hull surface area: 16 lbs/sq ft or 79 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.39
      - Longitudinal: 5.40
      - Overall: 0.51
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped

Miscellaneous weight for torpedoes.

[eltf177]

Here's one more for consideration. She's got 20-inch TT's vs. 16-inch but might meet your needs...

******************

Eta-class, Erwhon Destroyer laid down 1905 (Engine 1901)

Displacement:
   528 t light; 551 t standard; 576 t normal; 595 t full load

Dimensions: Length overall / water x beam x draught
   193.92 ft / 190.00 ft x 21.00 ft x 10.00 ft (normal load)
   59.11 m / 57.91 m x 6.40 m  x 3.05 m

Armament:
      3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1905 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      6 - 2.24" / 57.0 mm guns in single mounts, 5.65lbs / 2.56kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      2 - 0.49" / 12.5 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1905 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 130 lbs / 59 kg
   Shells per gun, main battery: 150
   4 - 20.0" / 508 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.50" / 13 mm         -               -
   2nd:   0.25" / 6 mm         -               -
   3rd:   0.25" / 6 mm         -               -

   - Conning tower: 1.00" / 25 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 9,214 ihp / 6,873 Kw = 25.00 kts
   Range 900nm at 10.00 kts
   Bunker at max displacement = 44 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   58 - 76

Cost:
   £0.079 million / $0.315 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 2.8 %
   Armour: 6 tons, 1.1 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 5 tons, 0.8 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 1 tons, 0.3 %
   Machinery: 333 tons, 57.8 %
   Hull, fittings & equipment: 157 tons, 27.3 %
   Fuel, ammunition & stores: 48 tons, 8.3 %
   Miscellaneous weights: 15 tons, 2.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     105 lbs / 48 Kg = 3.3 x 4.0 " / 102 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 11.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.77
   Seaboat quality  (Average = 1.00): 1.42

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.505
   Length to Beam Ratio: 9.05 : 1
   'Natural speed' for length: 13.78 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.43 ft / 5.62 m
      - Forecastle (20 %):   15.82 ft / 4.82 m
      - Mid (50 %):      12.82 ft / 3.91 m
      - Quarterdeck (15 %):   10.82 ft / 3.30 m
      - Stern:      9.82 ft / 2.99 m
      - Average freeboard:   13.35 ft / 4.07 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 210.9 %
      - Above water (accommodation/working, high = better): 42.5 %
   Waterplane Area: 2,671 Square feet or 248 Square metres
   Displacement factor (Displacement / loading): 19 %
   Structure weight / hull surface area: 20 lbs/sq ft or 98 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.42
      - Longitudinal: 7.47
      - Overall: 0.57
   Hull space for machinery, storage, compartmentation is extremely poor
   Room for accommodation and workspaces is extremely poor
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

TT's in twin centerline mounts. Miscellaneous weight as follows:

- 4 tons for torpedoes
- 11 tons for future growth