Iberia (third time's the charm)

Started by Darman, March 25, 2020, 02:32:54 AM

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Kaiser Kirk

Quote from: Darman on April 07, 2020, 05:50:05 PM
Replacement of the above design

Quote
Concept, Iberia Battleship laid down 1910

Displacement:
   18,605 t light; 19,654 t standard; 20,866 t normal; 21,835 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (656.17 ft / 656.17 ft) x 77.10 ft x (26.25 / 27.21 ft)
   (200.00 m / 200.00 m) x 23.50 m  x (8.00 / 8.29 m)

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.8" / 325 mm   373.20 ft / 113.75 m   9.71 ft / 2.96 m
   Ends:   3.94" / 100 mm   200.92 ft / 61.24 m   9.71 ft / 2.96 m
     82.05 ft / 25.01 m Unarmoured ends
   Upper:   3.94" / 100 mm   373.20 ft / 113.75 m   8.01 ft / 2.44 m
     Main Belt covers 88 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
      1.97" / 50 mm   373.20 ft / 113.75 m   24.08 ft / 7.34 m

   - Armoured deck - multiple decks: 0.98" / 25 mm For and Aft decks
   Forecastle: 3.94" / 100 mm  Quarter deck: 0.98" / 25 mm

Machinery:
   Coal fired boilers, steam turbines,
   Electric motors, 4 shafts, 26,491 shp / 19,763 Kw = 21.00 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 2,181 tons (100% coal)



Distribution of weights at normal displacement:
   Armament: 2,434 tons, 11.7 %
   Armour: 6,358 tons, 30.5 %
      - Belts: 2,780 tons, 13.3 %
      - Torpedo bulkhead: 655 tons, 3.1 %
      - Armament: 1,910 tons, 9.2 %
      - Armour Deck: 821 tons, 3.9 %
      - Conning Tower: 193 tons, 0.9 %
   Machinery: 1,204 tons, 5.8 %
   Hull, fittings & equipment: 8,138 tons, 39.0 %
   Fuel, ammunition & stores: 2,261 tons, 10.8 %
   Miscellaneous weights: 470 tons, 2.3 %
      - Hull below water: 345 tons
      - Hull above water: 25 tons
      - On freeboard deck: 100 tons


   'Natural speed' for length: 25.62 kts
   
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  26.74 ft / 8.15 m,  16.99 ft / 5.18 m
      - Forward deck:   30.00 %,  16.99 ft / 5.18 m,  16.99 ft / 5.18 m
      - Aft deck:   35.00 %,  16.99 ft / 5.18 m,  16.99 ft / 5.18 m
      - Quarter deck:   15.00 %,  16.99 ft / 5.18 m,  16.99 ft / 5.18 m
      - Average freeboard:      17.77 ft / 5.42 m
   Ship tends to be wet forward


   Hull strength (Relative):
      - Cross-sectional: 1.17
      - Longitudinal: 1.34
      - Overall: 1.19
   
Misc Weight Distribution
Below Water
----345t Electric Drives

Above Water
----25t flag facilities
----0t short range wireless

On Deck
----Fire Control
----75t flag facilities
----25t long range wireless

Do I need to set aside 10% of armament weight for 1905 FC?

1) Yes, you need 10% or 243t for Firecontrol
2) you have a ton of extra hull strength.
3) From the height of the TDS, vs. the depth of the hull, I'm guessing you deepend the hull somewhere in the design process after you hit 'default' for the armor tab. Prob was 7.75m draft originally.
4) The quarter deck doesn't protect much...it does protect the shafts of the ship.  They are immune to splinters, but a shell exploding next to them is bad. Rare hit, but more possible with a 25mm deck.
5) your hull is 5.18m, and then raise to 8.13m at the bow - a nearly 3m rise... I won't demand the bow be flat for "forward" fire by "A" turret, but 3m will see that turret silent end-on.
6) Your belts and TDS don't actually cover your vitals. That's problematic
7) 5.18m freeboard - 2.44m upperbelt - 2.92m belt : -0.18m.   In 1890 that might be ok, but by 1910 they understood that the roll of the ship will expose below the waterline. Please adjust the belt height to cover down to at least 0.5m, and preferably 1-1.5m at a minimum.
8) It's a very long vessel. Which is fine. Hmm, looks like Iberia has lots of long drydocks for repair...ok up to you.
Did they beat the drum slowly,
Did they play the fife lowly,
Did they sound the death march, as they lowered you down,
Did the band play the last post and chorus,
Did the pipes play the flowers of the forest

Darman

Quote from: Kaiser Kirk on April 07, 2020, 09:48:32 PM
Interesting that Iberia would go slower with the next set of BBs.
..and revert to all coal firing.
IF you want to use electric motors, they will be taken into account in battle, particularly vs. Torpedoes.
BUT... Electric Drives: Take an additional 25% of engine weight in misc weight and provides a 15% bonus to range plus improved compartmentalization (effects number of torpedo hits to sink)
Eh i knew I was gonna make a mistake somewhere.  will need to play a little more once I get home