Design Bureau Guangzhou

[Jefgte]

 ;)


Economical for heavy coastal protection, semi powerfull, could be add in the Battle line, able to sink a 10000t  AC  & 4 ships to have 28000t.
She need a light BC to be sunk.

Wheeler -16000t 32kts, don't like very much to catch 2 Lurdan PBs 

I love that kind of compact ship  :-*



Jef  ;)

[Carthaginian]

I agree... this is a really nice little CDS.
I'd need one of my older semi-dreads to put it under, though this ship would hardly hurt them.


And Jef, Wheeler was made to (essentially) be bait for a BC- definitely not to fight one. They are just there to give a battle cruiser something to chase down while the battlefleet rolls up to your front door and starts 'knocking.'

[Logi]

Armored like a real battleship, armed like one, but the tonnage is way down.

Light Ship, RRC Light Battleship laid down 1920 (Engine 1916)

Displacement:
   18,000 t light; 19,171 t standard; 20,418 t normal; 21,415 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 88.60 ft x 26.30 ft (normal load)
   170.00 m / 170.00 m x 27.01 m  x 8.02 m

Armament:
      8 - 14.00" / 356 mm guns (2x4 guns), 1,650.00lbs / 748.43kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      12 - 4.13" / 105 mm guns (6x2 guns), 35.32lbs / 16.02kg shells, 1920 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
   Weight of broadside 13,624 lbs / 6,180 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   352.00 ft / 107.29 m   13.14 ft / 4.01 m
   Ends:   Unarmoured
     Main Belt covers 97 % of normal length

   - Torpedo Bulkhead:
      2.50" / 64 mm   352.00 ft / 107.29 m   26.30 ft / 8.02 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   18.0" / 457 mm   3.00" / 76 mm      12.0" / 305 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 4.00" / 102 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 32,986 shp / 24,608 Kw = 22.00 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 2,244 tons

Complement:
   853 - 1,110

Cost:
   £4.725 million / $18.900 million

Distribution of weights at normal displacement:
   Armament: 1,425 tons, 7.0 %
   Armour: 6,690 tons, 32.8 %
      - Belts: 2,746 tons, 13.5 %
      - Torpedo bulkhead: 856 tons, 4.2 %
      - Armament: 1,110 tons, 5.4 %
      - Armour Deck: 1,914 tons, 9.4 %
      - Conning Tower: 64 tons, 0.3 %
   Machinery: 1,229 tons, 6.0 %
   Hull, fittings & equipment: 8,356 tons, 40.9 %
   Fuel, ammunition & stores: 2,418 tons, 11.8 %
   Miscellaneous weights: 300 tons, 1.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23,884 lbs / 10,833 Kg = 17.4 x 14.0 " / 356 mm shells or 4.7 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 16.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.60
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 6.30 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   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 %):   14.00 ft / 4.27 m
      - Mid (50 %):      13.00 ft / 3.96 m
      - Quarterdeck (15 %):   13.00 ft / 3.96 m
      - Stern:      13.00 ft / 3.96 m
      - Average freeboard:   13.43 ft / 4.09 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.1 %
      - Above water (accommodation/working, high = better): 101.9 %
   Waterplane Area: 34,483 Square feet or 3,204 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 184 lbs/sq ft or 900 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.43
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

[Carthaginian]

A more modern version of the Oklahoma. :)
Almost to the ton.

[Sachmle]

For it's tonnage, not bad. 2 things I'd change though.

1) You don't really need 18" of armor on the face plate. The biggest gun in Nverse is 16".

2) 4" CT armor will only guarantee that the shell fuzes and that everyone inside is dead. If you can't armor it to stop a BB caliber AP shell, then do 1-2" splinter protection, which will also stop smaller HE rounds, and let anything bigger pass through w/o detonating.

[Jefgte]

I agree with Sachmle


Jef

[Logi]

The 18" face armor thickness gives the face armor similar protection to the sloped main belt.

Light Ship, RRC Light Battleship laid down 1920 (Engine 1916)

Displacement:
   18,000 t light; 19,171 t standard; 20,418 t normal; 21,415 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 88.60 ft x 26.30 ft (normal load)
   170.00 m / 170.00 m x 27.01 m  x 8.02 m

Armament:
      8 - 14.00" / 356 mm guns (2x4 guns), 1,650.00lbs / 748.43kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      12 - 4.13" / 105 mm guns (6x2 guns), 35.32lbs / 16.02kg shells, 1920 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
   Weight of broadside 13,624 lbs / 6,180 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.5" / 343 mm   352.00 ft / 107.29 m   13.14 ft / 4.01 m
   Ends:   Unarmoured
     Main Belt covers 97 % of normal length

   - Torpedo Bulkhead:
      2.50" / 64 mm   352.00 ft / 107.29 m   26.30 ft / 8.02 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   18.0" / 457 mm   3.00" / 76 mm      12.0" / 305 mm
   2nd:   1.00" / 25 mm   0.88" / 22 mm      1.00" / 25 mm

   - Armour deck: 3.00" / 76 mm, Conning tower: 2.00" / 51 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 32,986 shp / 24,608 Kw = 22.00 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 2,244 tons

Complement:
   853 - 1,110

Cost:
   £4.725 million / $18.900 million

Distribution of weights at normal displacement:
   Armament: 1,425 tons, 7.0 %
   Armour: 6,689 tons, 32.8 %
      - Belts: 2,746 tons, 13.5 %
      - Torpedo bulkhead: 856 tons, 4.2 %
      - Armament: 1,141 tons, 5.6 %
      - Armour Deck: 1,914 tons, 9.4 %
      - Conning Tower: 32 tons, 0.2 %
   Machinery: 1,229 tons, 6.0 %
   Hull, fittings & equipment: 8,357 tons, 40.9 %
   Fuel, ammunition & stores: 2,418 tons, 11.8 %
   Miscellaneous weights: 300 tons, 1.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23,804 lbs / 10,797 Kg = 17.3 x 14.0 " / 356 mm shells or 4.7 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.61
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 6.30 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 63
   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 %):   14.00 ft / 4.27 m
      - Mid (50 %):      13.00 ft / 3.96 m
      - Quarterdeck (15 %):   13.00 ft / 3.96 m
      - Stern:      13.00 ft / 3.96 m
      - Average freeboard:   13.43 ft / 4.09 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.1 %
      - Above water (accommodation/working, high = better): 101.9 %
   Waterplane Area: 34,483 Square feet or 3,204 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 184 lbs/sq ft or 900 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.42
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

[Sachmle]

The 18" face armor thickness gives the face armor similar protection to the sloped main belt.

Ahh...didn't know that. Jolly good show then old chap.

[Carthaginian]

WOW... so you'll have a 12' belt.
Kinda short for modern guns.

[Logi]

Ahh...didn't know that. Jolly good show then old chap.

That is against the RRC 14"/45 Superheavy...

...For comparison, using 18" face armor, immunity zone is: 7,460 yds - not penetrable.

So for "belt" hits, at 16~17" face armor (turret) is the rough equivalent to the 13.8" belt sloped 10 degrees.

Of course the belt here is 13.5" sloped 20 degrees, but I figure it's approximately the same.

WOW... so you'll have a 12' belt.
Kinda short for modern guns.

??

[Carthaginian]

Ok, you have a 13.14' high belt.

If your ship is steaming at flank speed (or maybe less) the wave/water interaction will wind up exposing some of the hull below the armor belt along the length of your ship. This is a BAD THING, as now that unarmored hull will now have neither armored belt nor water to defend it against shells. This means that the regular old thin hull plating will possibly be taking hits, and below the waterline at that. Ships sink very fast with holes in the bottom.

If the belt is sloped to any degree, then you'll have an effectively shorter belt... meaning 12' or so.
That means you'll have something like 6' above the waterline and 6' below it. That's not a lot of leeway with your ship taking hits and even average sized waves moving along the side of the ship.

[Logi]

If your ship is steaming at flank speed (or maybe less) the wave/water interaction will wind up exposing some of the hull below the armor belt along the length of your ship.

Must not be in the Chinese Seas then.

If the belt is sloped to any degree, then you'll have an effectively shorter belt... meaning 12' or so.

It is indeed a 12' tall belt.

That's not a lot of leeway with your ship taking hits and even average sized waves moving along the side of the ship.

What kind of waves are we going into?

In the Chinese seas, the highest waves go 3'.

-----------

It is unarmored one deck above waterline. The rest is covered by the 2.5" TB system which span the entire underwater depth.

[Sachmle]

The waves themselves only make it worse, just the motion of the water past the ship at speed causes it to form a 'hole' about midships where the bow wave has fallen off. See the pic of Baden on NavWeaps for a visual demonstration.
http://www.navweaps.com/Weapons/WNGER_15-45_skc13.htm

[Carthaginian]

Ok... this would happen in ANY seas, anywhere. The 'wave' you are interacting with is your own bow wave. The bow wave will make enough disturbance that your ship will unmask part of the hull below the belt through it's own movement through the water. Sam's pic of the German battleship illustrates this perfectly.

In short, you ship brings the 6-8 foot seas needed to screw itself along with it to the fight...
That ship is on water that is smooth as glass, and yet you have two spots where the hull below the belt is exposed.

[Logi]

Ok... this would happen in ANY seas, anywhere. The 'wave' you are interacting with is your own bow wave. The bow wave will make enough disturbance that your ship will unmask part of the hull below the belt through it's own movement through the water. Sam's pic of the German battleship illustrates this perfectly.

In short, you ship brings the 6-8 foot seas needed to screw itself along with it to the fight...

Actual since the speed/length of the ship is ext6remely close to the magically 0.94. The ship outruns most of it's bow wave, so it actually settles slightly instead of having the bow wave expose part of the hull. Even if the wave does expose a portion, it would be located aft, a portion that probably isn't armored at all to begin with.

The SMS Bayern, which Samchle linked, has a 0.90 speed/length and causes the wave to expose part of the hull.

But of course, if the main belt could be made taller, it would be better. As the 0.94 number applies only to still waters and moving through them.