Isbre,reconstucted Baltic Cofederation

[ledeper]

BCS Isbre,reconstucted, Baltic League  Battleship laid down 1901 (Engine 1910)

Displacement:
   15.008 t light; 16.050 t standard; 18.400 t normal; 20.280 t full load

Dimensions: Length overall / water x beam x draught
   562,03 ft / 550,00 ft x 70,00 ft x 28,00 ft (normal load)
   171,31 m / 167,64 m x 21,34 m  x 8,53 m

Armament:
      6 - 12,00" / 305 mm guns (3x2 guns), 864,00lbs / 391,90kg shells, 1901 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      8 - 8,00" / 203 mm guns in single mounts, 256,00lbs / 116,12kg shells, 1901 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     8 guns in hull casemates - Limited use in heavy seas
      8 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1901 Model
     Breech loading guns in casemate mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 7.732 lbs / 3.507 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12,0" / 305 mm   357,50 ft / 108,97 m   10,04 ft / 3,06 m
   Ends:   6,00" / 152 mm   192,48 ft / 58,67 m   10,04 ft / 3,06 m
   Upper:   6,00" / 152 mm   357,50 ft / 108,97 m   8,00 ft / 2,44 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1,00" / 25 mm   357,50 ft / 108,97 m   25,70 ft / 7,83 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12,0" / 305 mm   10,0" / 254 mm      10,0" / 254 mm
   2nd:   10,0" / 254 mm         -               -
   3rd:   10,0" / 254 mm         -               -

   - Armour deck: 2,00" / 51 mm, Conning tower: 12,00" / 305 mm

Machinery:
   Coal fired boilers, steam turbines,
   Electric motors, 3 shafts, 34.918 shp / 26.049 Kw = 22,75 kts
   Range 6.500nm at 14,00 kts
   Bunker at max displacement = 4.231 tons (100% coal)

Complement:
   789 - 1.026

Cost:
   £1,559 million / $6,237 million

Distribution of weights at normal displacement:
   Armament: 967 tons, 5,3 %
   Armour: 6.420 tons, 34,9 %
      - Belts: 3.005 tons, 16,3 %
      - Torpedo bulkhead: 340 tons, 1,8 %
      - Armament: 1.856 tons, 10,1 %
      - Armour Deck: 1.039 tons, 5,6 %
      - Conning Tower: 180 tons, 1,0 %
   Machinery: 1.587 tons, 8,6 %
   Hull, fittings & equipment: 5.734 tons, 31,2 %
   Fuel, ammunition & stores: 3.392 tons, 18,4 %
   Miscellaneous weights: 300 tons, 1,6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23.212 lbs / 10.529 Kg = 26,9 x 12,0 " / 305 mm shells or 3,6 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 3,5 ft / 1,1 m
   Roll period: 15,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 65 %
         - Recoil effect (Restricted arc if above 1.00): 0,73
   Seaboat quality  (Average = 1.00): 1,30

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,597
   Length to Beam Ratio: 7,86 : 1
   'Natural speed' for length: 23,45 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 25,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      25,80 ft / 7,86 m
      - Forecastle (20 %):   16,42 ft / 5,00 m
      - Mid (50 %):      16,42 ft / 5,00 m
      - Quarterdeck (15 %):   16,42 ft / 5,00 m
      - Stern:      16,42 ft / 5,00 m
      - Average freeboard:   17,17 ft / 5,23 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99,5 %
      - Above water (accommodation/working, high = better): 111,3 %
   Waterplane Area: 28.090 Square feet or 2.610 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 134 lbs/sq ft or 652 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,42
      - Overall: 1,00
New  propulsion and added deckarmour

[P3D]

During reconstruction you take out the engine, put another back, so the geometry of the ship should not change significantly.
The Reconstruction weight balance is:

Machinery: 1587t (was 1871t)
Bunker at normal displacement: 4231 vs 3572t
Deck armor: 1039 vs. 506t.
Hull weight: 5734 vs 5659.

The change in machinery weight does not cover the change in armor, so you should decrease speed so engine weight would be ~1350t.
Bunker at maximum load should not increase more than the change of machinery and deck armor weight.

[ledeper]

Isbre, Baltic Confederation Isbre reconstructet laid down 1901 (Engine 1911)

Displacement:
   14.863 t light; 15.762 t standard; 17.971 t normal; 19.738 t full load

Dimensions: Length overall / water x beam x draught
   576,66 ft / 564,47 ft x 70,01 ft x 27,95 ft (normal load)
   175,77 m / 172,05 m x 21,34 m  x 8,52 m

Armament:
      6 - 12,00" / 305 mm guns (3x2 guns), 864,00lbs / 391,90kg shells, 1901 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      8 - 8,00" / 203 mm guns in single mounts, 256,00lbs / 116,12kg shells, 1901 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     8 guns in hull casemates - Limited use in all but light seas
      8 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1901 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
   Weight of broadside 7.732 lbs / 3.507 kg
   Shells per gun, main battery: 120

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12,0" / 305 mm   366,90 ft / 111,83 m   10,04 ft / 3,06 m
   Ends:   6,00" / 152 mm   197,54 ft / 60,21 m   10,04 ft / 3,06 m
   Upper:   6,00" / 152 mm   366,90 ft / 111,83 m   8,00 ft / 2,44 m
     Main Belt covers 100 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
      1,00" / 25 mm   366,90 ft / 111,83 m   25,91 ft / 7,90 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12,0" / 305 mm   10,0" / 254 mm      10,0" / 254 mm
   2nd:   10,0" / 254 mm         -               -
   3rd:   10,0" / 254 mm         -               -

   - Armour deck: 2,00" / 51 mm, Conning tower: 12,00" / 305 mm

Machinery:
   Coal fired boilers, steam turbines,
   Electric motors, 3 shafts, 35.235 shp / 26.285 Kw = 23,00 kts
   Range 6.500nm at 14,00 kts
   Bunker at max displacement = 3.976 tons (100% coal)

Complement:
   775 - 1.008

Cost:
   £1,552 million / $6,209 million

Distribution of weights at normal displacement:
   Armament: 967 tons, 5,4 %
   Armour: 6.419 tons, 35,7 %
      - Belts: 3.074 tons, 17,1 %
      - Torpedo bulkhead: 352 tons, 2,0 %
      - Armament: 1.777 tons, 9,9 %
      - Armour Deck: 1.039 tons, 5,8 %
      - Conning Tower: 177 tons, 1,0 %
   Machinery: 1.573 tons, 8,8 %
   Hull, fittings & equipment: 5.555 tons, 30,9 %
   Fuel, ammunition & stores: 3.108 tons, 17,3 %
   Miscellaneous weights: 350 tons, 1,9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     21.408 lbs / 9.710 Kg = 24,8 x 12,0 " / 305 mm shells or 3,5 torpedoes
   Stability (Unstable if below 1.00): 1,13
   Metacentric height 3,7 ft / 1,1 m
   Roll period: 15,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0,57
   Seaboat quality  (Average = 1.00): 1,19

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak
   Block coefficient: 0,569
   Length to Beam Ratio: 8,06 : 1
   'Natural speed' for length: 23,76 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 25,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      26,15 ft / 7,97 m
      - Forecastle (20 %):   16,63 ft / 5,07 m (14,99 ft / 4,57 m aft of break)
      - Mid (50 %):      14,01 ft / 4,27 m (13,35 ft / 4,07 m aft of break)
      - Quarterdeck (15 %):   13,35 ft / 4,07 m
      - Stern:      13,35 ft / 4,07 m
      - Average freeboard:   15,11 ft / 4,61 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100,7 %
      - Above water (accommodation/working, high = better): 95,8 %
   Waterplane Area: 28.087 Square feet or 2.609 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 132 lbs/sq ft or 643 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,97
      - Longitudinal: 1,22
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
This is the closest i can get

[P3D]

The hull of the original is completely different. And you should use either 1909 or 1911 engines.

If you insist on 23kts, the ship should look like the following. Cost is $0.5 and 0.5BP for the armor, 1.754BP and $3.508 for the machinery, 0.109BP and $0.055 for the extra hull weight, $3.715 and 1.486BP for refit. Sum is  $7.78 and 3.85BP.

Isbre Reconstructed, laid down 1909, Engine year 1909

Displacement:
   15,166 t light; 15,967 t standard; 17,556 t normal; 18,828 t full load

Dimensions: Length overall / water x beam x draught
   564.46 ft / 550.00 ft x 70.00 ft x 28.00 ft (normal load)
   172.05 m / 167.64 m x 21.34 m  x 8.53 m

Armament:
      6 - 12.00" / 305 mm guns (3x2 guns), 864.00lbs / 391.90kg shells, 1909 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward
      8 - 8.00" / 203 mm guns in single mounts, 256.00lbs / 116.12kg shells, 1909 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     8 guns in hull casemates - Limited use in heavy seas
      8 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1909 Model
     Breech loading guns in casemate mounts
     on side ends, evenly spread
     8 guns in hull casemates - Limited use in heavy seas
   Weight of broadside 7,732 lbs / 3,507 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   389.50 ft / 118.72 m   10.04 ft / 3.06 m
   Ends:   6.00" / 152 mm   160.48 ft / 48.91 m   10.04 ft / 3.06 m
   Upper:   6.00" / 152 mm   389.50 ft / 118.72 m   8.00 ft / 2.44 m
     Main Belt covers 109 % of normal length

   - Torpedo Bulkhead:
      1.00" / 25 mm   389.50 ft / 118.72 m   25.70 ft / 7.83 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   10.0" / 254 mm      10.0" / 254 mm
   2nd:   10.0" / 254 mm         -               -
   3rd:   10.0" / 254 mm         -               -

   - Armour deck: 2.00" / 51 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 3 shafts, 35,087 shp / 26,175 Kw = 23.00 kts
   Range 6,000nm at 12.00 kts
   Bunker at max displacement = 2,861 tons (100% coal)

Complement:
   762 - 991

Cost:
   £1.588 million / $6.353 million

Distribution of weights at normal displacement:
   Armament: 967 tons, 5.5 %
   Armour: 6,531 tons, 37.2 %
      - Belts: 3,117 tons, 17.8 %
      - Torpedo bulkhead: 370 tons, 2.1 %
      - Armament: 1,856 tons, 10.6 %
      - Armour Deck: 1,013 tons, 5.8 %
      - Conning Tower: 175 tons, 1.0 %
   Machinery: 1,754 tons, 10.0 %
   Hull, fittings & equipment: 5,664 tons, 32.3 %
   Fuel, ammunition & stores: 2,390 tons, 13.6 %
   Miscellaneous weights: 250 tons, 1.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     21,112 lbs / 9,576 Kg = 24.4 x 12.0 " / 305 mm shells or 3.3 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 3.6 ft / 1.1 m
   Roll period: 15.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 65 %
         - Recoil effect (Restricted arc if above 1.00): 0.71
   Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.570
   Length to Beam Ratio: 7.86 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 5.00 ft / 1.52 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      26.00 ft / 7.92 m
      - Forecastle (20 %):   16.42 ft / 5.00 m
      - Mid (50 %):      16.42 ft / 5.00 m
      - Quarterdeck (15 %):   16.42 ft / 5.00 m
      - Stern:      16.42 ft / 5.00 m
      - Average freeboard:   17.19 ft / 5.24 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106.0 %
      - Above water (accommodation/working, high = better): 112.4 %
   Waterplane Area: 27,378 Square feet or 2,543 Square metres
   Displacement factor (Displacement / loading): 97 %
   Structure weight / hull surface area: 134 lbs/sq ft or 656 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.48
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

[ledeper]

And it takes 9 months? ???

[P3D]

Make that 12. It should not take less time than a full refit.