Esc 1917 BB proposal

[ledeper]

Enter ship name, Enter country Enter ship type laid down 1917 (Engine 1916)

Displacement:
   40.245 t light; 42.607 t standard; 45.685 t normal; 48.148 t full load

Dimensions: Length overall / water x beam x draught
   720,62 ft / 716,86 ft x 108,27 ft x 31,17 ft (normal load)
   219,65 m / 218,50 m x 33,00 m  x 9,50 m

Armament:
      6 - 15,94" / 405 mm guns (2x3 guns), 2.026,91lbs / 919,39kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 15,94" / 405 mm guns (2x2 guns), 2.026,91lbs / 919,39kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, all raised mounts
      24 - 5,91" / 150 mm guns (4 mounts), 102,98lbs / 46,71kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on centreline, all amidships, 4 raised guns - superfiring
      10 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 22.760 lbs / 10.324 kg
   Shells per gun, main battery: 110

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,8" / 350 mm   573,49 ft / 174,80 m   14,14 ft / 4,31 m
   Ends:   Unarmoured
   Upper:   4,92" / 125 mm   573,49 ft / 174,80 m   8,01 ft / 2,44 m
     Main Belt covers 123 % of normal length

   - Torpedo Bulkhead:
      1,97" / 50 mm   573,49 ft / 174,80 m   30,15 ft / 9,19 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,8" / 350 mm   7,87" / 200 mm      11,8" / 300 mm
   2nd:   13,8" / 350 mm   7,87" / 200 mm      11,8" / 300 mm
   3rd:   0,98" / 25 mm         -               -
   4th:   0,20" / 5 mm         -               -

   - Armour deck: 5,91" / 150 mm, Conning tower: 11,81" / 300 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric cruising motors plus geared drives, 4 shafts, 72.683 shp / 54.221 Kw = 24,00 kts
   Range 8.500nm at 14,00 kts
   Bunker at max displacement = 5.542 tons

Complement:
   1.562 - 2.031

Cost:
   £7,595 million / $30,382 million

Distribution of weights at normal displacement:
   Armament: 2.845 tons, 6,2 %
   Armour: 16.903 tons, 37,0 %
      - Belts: 5.621 tons, 12,3 %
      - Torpedo bulkhead: 1.259 tons, 2,8 %
      - Armament: 3.136 tons, 6,9 %
      - Armour Deck: 6.561 tons, 14,4 %
      - Conning Tower: 325 tons, 0,7 %
   Machinery: 2.708 tons, 5,9 %
   Hull, fittings & equipment: 17.288 tons, 37,8 %
   Fuel, ammunition & stores: 5.441 tons, 11,9 %
   Miscellaneous weights: 500 tons, 1,1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     60.012 lbs / 27.221 Kg = 29,6 x 15,9 " / 405 mm shells or 10,0 torpedoes
   Stability (Unstable if below 1.00): 1,14
   Metacentric height 7,2 ft / 2,2 m
   Roll period: 17,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 58 %
         - Recoil effect (Restricted arc if above 1.00): 0,60
   Seaboat quality  (Average = 1.00): 1,16

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,661
   Length to Beam Ratio: 6,62 : 1
   'Natural speed' for length: 26,77 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      21,33 ft / 6,50 m
      - Forecastle (5 %):   18,04 ft / 5,50 m
      - Mid (80 %):      18,04 ft / 5,50 m
      - Quarterdeck (15 %):   18,04 ft / 5,50 m
      - Stern:      18,04 ft / 5,50 m
      - Average freeboard:   18,11 ft / 5,52 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 83,4 %
      - Above water (accommodation/working, high = better): 132,2 %
   Waterplane Area: 60.057 Square feet or 5.580 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 221 lbs/sq ft or 1.079 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,98
      - Longitudinal: 1,19
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

As usual belt 15 dg outward slope

[P3D]

The 6-gun secondary mounts are...interesting. No secondary armor either.
Barbette armor is inadequate. Can be penetrated by 13.5-14" guns. Same for CT.

The bottom edge of the main belt is a mere 4' below the normal waterline, the 15* slope don't help here either, a hit around the waterline will get into the vitals.

6" deck armor is too much, are you preparing to fight at 250hm+ distances?

Block coefficient (0.661) is too high.

[The Rock Doctor]

Eek!  150mm gatlings...

[P3D]

Ah, I haven't thought about that...

[ledeper]

This better? :D
Displacement:
   36.028 t light; 38.237 t standard; 41.626 t normal; 44.337 t full load

Dimensions: Length overall / water x beam x draught
   721,44 ft / 717,68 ft x 108,27 ft x 29,53 ft (normal load)
   219,90 m / 218,75 m x 33,00 m  x 9,00 m

Armament:
      6 - 15,94" / 405 mm guns (2x3 guns), 2.026,91lbs / 919,39kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      4 - 15,94" / 405 mm guns (2x2 guns), 2.026,91lbs / 919,39kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, all raised mounts
      24 - 4,92" / 125 mm guns (12x2 guns), 59,59lbs / 27,03kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side, evenly spread
      10 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 21.719 lbs / 9.852 kg
   Shells per gun, main battery: 110

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13,8" / 350 mm   466,50 ft / 142,19 m   14,14 ft / 4,31 m
   Ends:   Unarmoured
   Upper:   3,94" / 100 mm   466,50 ft / 142,19 m   8,01 ft / 2,44 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1,97" / 50 mm   466,50 ft / 142,19 m   27,92 ft / 8,51 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13,8" / 350 mm   7,87" / 200 mm      13,8" / 350 mm
   2nd:   13,8" / 350 mm   7,87" / 200 mm      13,8" / 350 mm

   - Armour deck: 3,94" / 100 mm, Conning tower: 13,78" / 350 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric cruising motors plus geared drives, 4 shafts, 73.873 shp / 55.110 Kw = 24,50 kts
   Range 10.000nm at 14,00 kts
   Bunker at max displacement = 6.100 tons

Complement:
   1.456 - 1.894

Cost:
   £6,426 million / $25,703 million

Distribution of weights at normal displacement:
   Armament: 2.715 tons, 6,5 %
   Armour: 13.397 tons, 32,2 %
      - Belts: 4.613 tons, 11,1 %
      - Torpedo bulkhead: 949 tons, 2,3 %
      - Armament: 3.203 tons, 7,7 %
      - Armour Deck: 4.276 tons, 10,3 %
      - Conning Tower: 357 tons, 0,9 %
   Machinery: 2.752 tons, 6,6 %
   Hull, fittings & equipment: 16.664 tons, 40,0 %
   Fuel, ammunition & stores: 5.598 tons, 13,4 %
   Miscellaneous weights: 500 tons, 1,2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     51.373 lbs / 23.302 Kg = 25,3 x 15,9 " / 405 mm shells or 8,3 torpedoes
   Stability (Unstable if below 1.00): 1,16
   Metacentric height 7,4 ft / 2,3 m
   Roll period: 16,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0,50
   Seaboat quality  (Average = 1.00): 1,03

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,635
   Length to Beam Ratio: 6,63 : 1
   'Natural speed' for length: 26,79 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      21,33 ft / 6,50 m
      - Forecastle (20 %):   16,40 ft / 5,00 m
      - Mid (50 %):      16,40 ft / 5,00 m
      - Quarterdeck (15 %):   16,40 ft / 5,00 m
      - Stern:      16,40 ft / 5,00 m
      - Average freeboard:   16,80 ft / 5,12 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88,8 %
      - Above water (accommodation/working, high = better): 126,0 %
   Waterplane Area: 58.708 Square feet or 5.454 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 222 lbs/sq ft or 1.084 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,08
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[Guinness]

are you preparing to fight at 250hm+ distances?

Hectometers? Now you're just showing off...

[Walter]

A proper person uses kilometers, meters, yards, feet, miles or nautical miles or all 6 of them (for distance). :)

[Guinness]

you forgot furlongs...

[Kaiser Kirk]

Gee, why does everyone skip over chains ?

[Korpen]

A proper person uses kilometers, meters, yards, feet, miles or nautical miles or all 6 of them (for distance). :)

hm is very good to use in gunnery, as it is usally about the smallest correction it is ever worth making.

[Sachmle]

Why so many AA guns? Especially the light ones that didn't really come into use until later? Why not 2-4 75mm AA or some 37-50mm AA?