Light Romanian Destroyers

[Logi]

Take it this way. Ireland has minelaying pocket cruisers. They go 29 kts, have two 8" guns, and carry 133 mines. And this is all using 1909 engines.

And a jack of all trades is master of none. Its because to specialize your ships than make them multipurpose. Multipurpose ships are not able to compete with specialized ships. You can carry a lot more mines with a 500t minelayers than you have now AND go pretty fast.

[maddox]

Still, I would think that building 3 ships that are really top of the line torpedo-gun-boats is better than using all of that on a slow, bulky minelayer. Although this is intriging. Maybe I can build these three the first half, than some different design the second half.

Offensive minelayers ain't slow. The UK Manxman class minelayer/cruiser was about the fastest ship with WW I tech, and it took untill the French Fantastiques to beat that speed record.

[The Rock Doctor]

- Above water (accommodation/working, high = better): 9.7 %

That's a big problem.  Too much stuff on deck.

[TexanCowboy]

Ok then, well, if you want to look at it like that, these would most likely one of the best small destroyers in the world. Just that they carry 4 mines is a small detail. And Rocky, that is a huge problem. I'm working on it.

[ctwaterman]

The Best in the world I doubt that The Dutch and the New Swiss have taken to making small Destroyers into an art form.  The problem with your Deck 9.7% is it is a very crowded location full of well things that go Boom  :-[

A Single Hit from any sort of Hight Explosive Round and believe me thats all the enemy is going to be shooting at you with or even a near miss will scatter crewmen like bowling pins, and possibly set fire to or explode the Torps, the Mines, the 3" Ammunition or the 5" Ammunition.

You have packed a large number of Torpedoes and large guns onto a 500 ton hull and got it to stay afloat thats a good start.  I like the Design but yes next HY you could build the same ship with say only 2  x 3" Guns no Torpedoes and lots and lots of mines.

Charles

[eltf177]

DD-1917,Romaina Destroyer laid down 1917 (Engine 1912)

Armament:
   
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1917 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread

Should these be superfiring?

[TexanCowboy]

No, actually, the 5'' should be super-firing.

[TexanCowboy]

Third try. It sacrificed two torpedoes and added 20 feet of length. Strangly, it is lighter than it was. Still 30.5 knots.

DD-1917, Romanian Light Destroyer laid down 1917 (Engine 1912)

Displacement:
   442 t light; 466 t standard; 539 t normal; 597 t full load

Dimensions: Length overall / water x beam x draught
   230.00 ft / 230.00 ft x 21.00 ft x 9.00 ft (normal load)
   70.10 m / 70.10 m x 6.40 m  x 2.74 m

Armament:
      2 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, all raised mounts
      2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 153 lbs / 70 kg
   Shells per gun, main battery: 150
   4 - 21.0" / 533.4 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 11,845 shp / 8,836 Kw = 28.00 kts
   Range 5,400nm at 10.00 kts
   Bunker at max displacement = 132 tons

Complement:
   55 - 72

Cost:
   £0.121 million / $0.485 million

Distribution of weights at normal displacement:
   Armament: 19 tons, 3.6 %
   Machinery: 251 tons, 46.5 %
   Hull, fittings & equipment: 162 tons, 30.0 %
   Fuel, ammunition & stores: 97 tons, 18.1 %
   Miscellaneous weights: 10 tons, 1.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     142 lbs / 64 Kg = 2.3 x 5.0 " / 127 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 55 %
         - Recoil effect (Restricted arc if above 1.00): 0.56
   Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.434
   Length to Beam Ratio: 10.95 : 1
   'Natural speed' for length: 15.17 kts
   Power going to wave formation at top speed: 68 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   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:      15.00 ft / 4.57 m
      - Forecastle (20 %):   12.00 ft / 3.66 m (10.00 ft / 3.05 m aft of break)
      - 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:   10.64 ft / 3.24 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 179.3 %
      - Above water (accommodation/working, high = better): 43.0 %
   Waterplane Area: 2,891 Square feet or 269 Square metres
   Displacement factor (Displacement / loading): 49 %
   Structure weight / hull surface area: 23 lbs/sq ft or 111 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.04
      - Overall: 0.60
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor

[maddox]

If you can shave off .1m, it fits a type 0 dock or slip.

By shaving off a tad of the freeboard you can add a ton or 2 in misc weight and still keep the seakeeping over 1 .

Increasing beam a bit to gain more weight, increase Block Coefficient or draught will mess up the seakeeping, but can give you even more misch weight for mines.

Also, the dual armament of 5 and 3", why?

And what will the .5" machineguns be shooting?

[TexanCowboy]

The combination of 5'' and 3'' is there because this ship is to be a learning expieriance. I want this ship to be flawed, but not enough to be made unuseful. I kind of decided on not using mines on this ship. I was thinking about putting a mine-layer on board, represented by a ton of miscellanous weight. The rest can be crew comfort, but can be replaced by mines. Here's the modified version.

DD-1917, Romania Light Destroyer laid down 1917 (Engine 1912)

Displacement:
   440 t light; 465 t standard; 538 t normal; 596 t full load

Dimensions: Length overall / water x beam x draught
   230.81 ft / 229.50 ft x 21.00 ft x 9.00 ft (normal load)
   70.35 m / 69.95 m x 6.40 m  x 2.74 m

Armament:
      2 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 153 lbs / 70 kg
   Shells per gun, main battery: 150
   4 - 21.0" / 533.4 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 11,848 shp / 8,839 Kw = 28.00 kts
   Range 5,400nm at 10.00 kts
   Bunker at max displacement = 131 tons

Complement:
   55 - 72

Cost:
   £0.121 million / $0.484 million

Distribution of weights at normal displacement:
   Armament: 19 tons, 3.6 %
   Machinery: 250 tons, 46.5 %
   Hull, fittings & equipment: 161 tons, 30.0 %
   Fuel, ammunition & stores: 97 tons, 18.1 %
   Miscellaneous weights: 10 tons, 1.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     141 lbs / 64 Kg = 2.3 x 5.0 " / 127 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 55 %
         - Recoil effect (Restricted arc if above 1.00): 0.56
   Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.434
   Length to Beam Ratio: 10.93 : 1
   'Natural speed' for length: 15.15 kts
   Power going to wave formation at top speed: 68 %
   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:      15.00 ft / 4.57 m
      - Forecastle (20 %):   12.00 ft / 3.66 m (10.00 ft / 3.05 m aft of break)
      - 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:   10.64 ft / 3.24 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 179.4 %
      - Above water (accommodation/working, high = better): 42.8 %
   Waterplane Area: 2,885 Square feet or 268 Square metres
   Displacement factor (Displacement / loading): 49 %
   Structure weight / hull surface area: 23 lbs/sq ft or 111 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.05
      - Overall: 0.60
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor

[Jefgte]

Dimensions: Length overall / water x beam x draught
   230.81 ft / 229.50 ft x 21.00 ft x 9.00 ft (normal load)
  70.35 m / 69.95 m x 6.40 m  x 2.74 m

70.35m... not cool

reduce bow angle.

;)

[TexanCowboy]

I though we went by the length at the waterline.

[maddox]

Length over all.

[TexanCowboy]

I fixed the problem.


DD-1917, Romania Light Destroyer laid down 1917 (Engine 1912)

Displacement:
   440 t light; 465 t standard; 538 t normal; 596 t full load

Dimensions: Length overall / water x beam x draught
   229.96 ft / 229.50 ft x 21.00 ft x 9.00 ft (normal load)
   70.35 m / 69.95 m x 6.40 m  x 2.74 m

Armament:
      2 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1917 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 153 lbs / 70 kg
   Shells per gun, main battery: 150
   4 - 21.0" / 533.4 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 11,848 shp / 8,839 Kw = 28.00 kts
   Range 5,400nm at 10.00 kts
   Bunker at max displacement = 131 tons

Complement:
   55 - 72

Cost:
   £0.121 million / $0.484 million

Distribution of weights at normal displacement:
   Armament: 19 tons, 3.6 %
   Machinery: 250 tons, 46.5 %
   Hull, fittings & equipment: 161 tons, 30.0 %
   Fuel, ammunition & stores: 97 tons, 18.1 %
   Miscellaneous weights: 10 tons, 1.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     141 lbs / 64 Kg = 2.3 x 5.0 " / 127 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 55 %
         - Recoil effect (Restricted arc if above 1.00): 0.56
   Seaboat quality  (Average = 1.00): 1.09

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.434
   Length to Beam Ratio: 10.93 : 1
   'Natural speed' for length: 15.15 kts
   Power going to wave formation at top speed: 68 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 2.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      15.00 ft / 4.57 m
      - Forecastle (20 %):   12.00 ft / 3.66 m (10.00 ft / 3.05 m aft of break)
      - 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:   10.64 ft / 3.24 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 179.4 %
      - Above water (accommodation/working, high = better): 42.8 %
   Waterplane Area: 2,885 Square feet or 268 Square metres
   Displacement factor (Displacement / loading): 49 %
   Structure weight / hull surface area: 23 lbs/sq ft or 111 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.05
      - Overall: 0.60
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor

[Sachmle]

No you didn't, it's still 70.35m long.