BB 1913 Imperator Class

[ctwaterman]

Hopefully by the time this hits the water some time in 1917 or 1918 it wont already be obsolete.

IMS Imperator, Italia Marina Ship Battleship laid down 1913

Displacement:
   26,750 t light; 28,507 t standard; 29,555 t normal; 30,394 t full load

Dimensions: Length overall / water x beam x draught
   645.75 ft / 645.75 ft x 90.60 ft x 28.75 ft (normal load)
   196.82 m / 196.82 m x 27.61 m  x 8.76 m

Armament:
      10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
     Main guns limited to end-on fire
      12 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
     Breech loading guns in casemate mounts
     on side, all forward
     12 guns in hull casemates - Limited use in heavy seas
      4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
     Breech loading guns in casemate mounts
     on side, all aft
     4 guns in hull casemates - Limited use in heavy seas
      3 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1913 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
      4 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1913 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 14,773 lbs / 6,701 kg
   Shells per gun, main battery: 140

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   404.00 ft / 123.14 m   12.50 ft / 3.81 m
   Ends:   5.00" / 127 mm   241.75 ft / 73.69 m   11.50 ft / 3.51 m
   Upper:   6.00" / 152 mm   410.00 ft / 124.97 m   8.00 ft / 2.44 m
     Main Belt covers 96 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   410.00 ft / 124.97 m   27.00 ft / 8.23 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      8.00" / 203 mm
   2nd:   6.00" / 152 mm         -               -
   3rd:   6.00" / 152 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 57,687 shp / 43,035 Kw = 24.21 kts
   Range 6,500nm at 10.00 kts
   Bunker at max displacement = 1,886 tons

Complement:
   1,126 - 1,465

Cost:
   £3.059 million / $12.235 million

Distribution of weights at normal displacement:
   Armament: 1,847 tons, 6.2 %
   Armour: 10,515 tons, 35.6 %
      - Belts: 4,235 tons, 14.3 %
      - Torpedo bulkhead: 819 tons, 2.8 %
      - Armament: 2,826 tons, 9.6 %
      - Armour Deck: 2,408 tons, 8.1 %
      - Conning Tower: 227 tons, 0.8 %
   Machinery: 2,260 tons, 7.6 %
   Hull, fittings & equipment: 11,753 tons, 39.8 %
   Fuel, ammunition & stores: 2,805 tons, 9.5 %
   Miscellaneous weights: 375 tons, 1.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40,171 lbs / 18,221 Kg = 29.3 x 14.0 " / 356 mm shells or 6.0 torpedoes
   Stability (Unstable if below 1.00): 1.06
   Metacentric height 4.8 ft / 1.5 m
   Roll period: 17.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 64 %
         - Recoil effect (Restricted arc if above 1.00): 1.04
   Seaboat quality  (Average = 1.00): 1.43

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.615
   Length to Beam Ratio: 7.13 : 1
   'Natural speed' for length: 25.41 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 45
   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:      28.00 ft / 8.53 m
      - Forecastle (21 %):   28.00 ft / 8.53 m
      - Mid (67 %):      24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
      - Quarterdeck (16 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   23.09 ft / 7.04 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 95.8 %
      - Above water (accommodation/working, high = better): 170.5 %
   Waterplane Area: 43,392 Square feet or 4,031 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 187 lbs/sq ft or 913 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.57
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

250T Fire Control   
25T   Wire Less
100T Flag Accomidation(Staff Ect)

[Borys]

Try giving Imperial Nave Anorexia some more beam.
She is limited to end-on fire.

Borys

[Sachmle]

Borys is right, and increasing beam should help you increase stability and steadiness as well. :)

[The Rock Doctor]

Reducing overall freeboard should work as well - it's rather high.

[Sachmle]

Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.00 ft / 8.53 m
      - Forecastle (21 %):   28.00 ft / 8.53 m
      - Mid (67 %):      24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
      - Quarterdeck (16 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   23.09 ft / 7.04 m

It's not too bad. It's only 2 decks aft of the break and 3 decks for, w/ a raised f'orcastle.

[ctwaterman]

Stupid Program all I did was change out the 4 x 2 15" Guns on the QE class ships and fix the armor problem on the QE where the armor did not cover all the machinery and magazines.....  I wonder according to Spring Sharp the Original QE also had this problem and exposed Machinery/Magazines.....



IMS Imperator, Italia Marina Ship Battleship laid down 1913

Displacement:
   27,187 t light; 28,954 t standard; 30,012 t normal; 30,859 t full load

Dimensions: Length overall / water x beam x draught
   645.75 ft / 645.75 ft x 92.00 ft x 28.75 ft (normal load)
   196.82 m / 196.82 m x 28.04 m  x 8.76 m

Armament:
      10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
     Breech loading guns in casemate mounts
     on side, all forward
     12 guns in hull casemates - Limited use in heavy seas
      4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
     Breech loading guns in casemate mounts
     on side, all aft
     4 guns in hull casemates - Limited use in heavy seas
      3 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1913 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
      4 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1913 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 14,773 lbs / 6,701 kg
   Shells per gun, main battery: 140

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.8" / 324 mm   409.10 ft / 124.69 m   12.50 ft / 3.81 m
   Ends:   5.00" / 127 mm   235.00 ft / 71.63 m   11.50 ft / 3.51 m
     1.65 ft / 0.50 m Unarmoured ends
   Upper:   6.00" / 152 mm   410.00 ft / 124.97 m   8.00 ft / 2.44 m
     Main Belt covers 97 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   410.00 ft / 124.97 m   27.00 ft / 8.23 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      8.00" / 203 mm
   2nd:   6.00" / 152 mm         -               -
   3rd:   6.00" / 152 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 11.00" / 279 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 64,298 shp / 47,966 Kw = 24.82 kts
   Range 6,500nm at 10.00 kts
   Bunker at max displacement = 1,905 tons

Complement:
   1,139 - 1,482

Cost:
   £3.115 million / $12.460 million

Distribution of weights at normal displacement:
   Armament: 1,847 tons, 6.2 %
   Armour: 10,520 tons, 35.1 %
      - Belts: 4,200 tons, 14.0 %
      - Torpedo bulkhead: 819 tons, 2.7 %
      - Armament: 2,826 tons, 9.4 %
      - Armour Deck: 2,445 tons, 8.1 %
      - Conning Tower: 229 tons, 0.8 %
   Machinery: 2,520 tons, 8.4 %
   Hull, fittings & equipment: 11,926 tons, 39.7 %
   Fuel, ammunition & stores: 2,825 tons, 9.4 %
   Miscellaneous weights: 375 tons, 1.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40,036 lbs / 18,160 Kg = 29.2 x 14.0 " / 356 mm shells or 5.9 torpedoes
   Stability (Unstable if below 1.00): 1.06
   Metacentric height 5.0 ft / 1.5 m
   Roll period: 17.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 62 %
         - Recoil effect (Restricted arc if above 1.00): 0.96
   Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.615
   Length to Beam Ratio: 7.02 : 1
   'Natural speed' for length: 25.41 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 46
   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:      28.00 ft / 8.53 m
      - Forecastle (21 %):   28.00 ft / 8.53 m
      - Mid (67 %):      24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
      - Quarterdeck (16 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   23.09 ft / 7.04 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 97.5 %
      - Above water (accommodation/working, high = better): 171.2 %
   Waterplane Area: 44,063 Square feet or 4,094 Square metres
   Displacement factor (Displacement / loading): 98 %
   Structure weight / hull surface area: 188 lbs/sq ft or 919 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.57
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

250T Fire Control   
25T   Wire Less
100T Flag Accomidation(Staff Ect)

[Borys]

Better. But still you are barely under the 1,0 for Recoil. I'd consider 0,80 to be a safe margin.
Thoughts?
Borys

[Sachmle]

I don't know. Make her even beamier? Lower speed and then drop the raised forecastle, if not lower the deck level? I'm not really sure what else to do.

[ctwaterman]

Nah just play with the Trim I had a huge amount of Sea Keeping and was just about to that Magic Cut off for this ship has a slow easy roll if I accept end on firing only she can be the perfect gunnery ship... well accept for the restricted arcs..... ;D

If on the other hand I greatly reduce the trim and increase the stability she  comes in more stable...... I wonder can I get her to roll over when firing a broadside..... 8) Sighter Enemy Engaged Enemy Sank Self.....

IMS Imperator, Italia Marina Ship Battleship laid down 1913

Displacement:
   27,712 t light; 29,591 t standard; 30,665 t normal; 31,523 t full load

Dimensions: Length overall / water x beam x draught
   645.75 ft / 645.75 ft x 94.00 ft x 28.75 ft (normal load)
   196.82 m / 196.82 m x 28.65 m  x 8.76 m

Armament:
      10 - 14.00" / 356 mm guns (4 mounts), 1,500.00lbs / 680.39kg shells, 1913 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
     Breech loading guns in casemate mounts
     on side, all forward
     12 guns in hull casemates - Limited use in heavy seas
      4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
     Breech loading guns in casemate mounts
     on side, all aft
     4 guns in hull casemates - Limited use in heavy seas
      3 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1913 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
      4 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1913 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 16,053 lbs / 7,282 kg
   Shells per gun, main battery: 140

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   409.10 ft / 124.69 m   12.50 ft / 3.81 m
   Ends:   5.00" / 127 mm   236.50 ft / 72.09 m   11.50 ft / 3.51 m
   Upper:   6.00" / 152 mm   410.00 ft / 124.97 m   8.00 ft / 2.44 m
     Main Belt covers 97 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   410.00 ft / 124.97 m   27.00 ft / 8.23 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   8.00" / 203 mm      8.00" / 203 mm
   2nd:   6.00" / 152 mm         -               -
   3rd:   6.00" / 152 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 13.00" / 330 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 62,888 shp / 46,914 Kw = 24.57 kts
   Range 6,500nm at 10.00 kts
   Bunker at max displacement = 1,932 tons

Complement:
   1,158 - 1,506

Cost:
   £3.127 million / $12.507 million

Distribution of weights at normal displacement:
   Armament: 1,847 tons, 6.0 %
   Armour: 10,687 tons, 34.9 %
      - Belts: 4,268 tons, 13.9 %
      - Torpedo bulkhead: 819 tons, 2.7 %
      - Armament: 2,826 tons, 9.2 %
      - Armour Deck: 2,499 tons, 8.1 %
      - Conning Tower: 274 tons, 0.9 %
   Machinery: 2,464 tons, 8.0 %
   Hull, fittings & equipment: 12,339 tons, 40.2 %
   Fuel, ammunition & stores: 2,952 tons, 9.6 %
   Miscellaneous weights: 375 tons, 1.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     43,500 lbs / 19,731 Kg = 31.7 x 14.0 " / 356 mm shells or 6.4 torpedoes
   Stability (Unstable if below 1.00): 1.15
   Metacentric height 5.9 ft / 1.8 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.83
   Seaboat quality  (Average = 1.00): 1.37

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.615
   Length to Beam Ratio: 6.87 : 1
   'Natural speed' for length: 25.41 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 36
   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:      28.00 ft / 8.53 m
      - Forecastle (21 %):   28.00 ft / 8.53 m
      - Mid (67 %):      24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
      - Quarterdeck (16 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   23.09 ft / 7.04 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 94.6 %
      - Above water (accommodation/working, high = better): 172.0 %
   Waterplane Area: 45,021 Square feet or 4,183 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 192 lbs/sq ft or 939 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.61
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

250T Fire Control   
25T   Wire Less
100T Flag Accomidation(Staff Ect)