Trying to find a way to use the 3T 24cm guns Swampy developed before he left

Started by Sachmle, April 26, 2009, 10:15:44 AM

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Sachmle

Are either of these useful/worthwhile?

Ersatz Odin, Brandenburgian Panzerkreuzer laid down 1916

Displacement:
   10,000 t light; 10,655 t standard; 12,035 t normal; 13,139 t full load

Dimensions: Length overall / water x beam x draught
   524.93 ft / 524.93 ft x 65.62 ft x 21.00 ft (normal load)
   160.00 m / 160.00 m x 20.00 m  x 6.40 m

Armament:
      6 - 9.45" / 240 mm guns (2x3 guns), 418.88lbs / 190.00kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all amidships
      4 - 6.69" / 170 mm guns (2x2 guns), 149.90lbs / 67.99kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      8 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 3,542 lbs / 1,607 kg
   Shells per gun, main battery: 200
   4 - 19.7" / 500 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.12" / 130 mm   341.21 ft / 104.00 m   14.76 ft / 4.50 m
   Ends:   1.97" / 50 mm   183.73 ft / 56.00 m   14.76 ft / 4.50 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.91" / 150 mm   2.95" / 75 mm      5.91" / 150 mm
   2nd:   3.94" / 100 mm   1.97" / 50 mm      3.94" / 100 mm
   3rd:   1.97" / 50 mm   0.98" / 25 mm            -

   - Armour deck: 1.57" / 40 mm, Conning tower: 5.91" / 150 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 53,659 shp / 40,029 Kw = 27.00 kts
   Range 12,500nm at 12.00 kts
   Bunker at max displacement = 2,484 tons

Complement:
   573 - 746

Cost:
   £1.642 million / $6.569 million

Distribution of weights at normal displacement:
   Armament: 445 tons, 3.7 %
   Armour: 2,692 tons, 22.4 %
      - Belts: 1,298 tons, 10.8 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 605 tons, 5.0 %
      - Armour Deck: 722 tons, 6.0 %
      - Conning Tower: 67 tons, 0.6 %
   Machinery: 1,999 tons, 16.6 %
   Hull, fittings & equipment: 4,564 tons, 37.9 %
   Fuel, ammunition & stores: 2,035 tons, 16.9 %
   Miscellaneous weights: 300 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15,983 lbs / 7,250 Kg = 37.9 x 9.4 " / 240 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.11
   Metacentric height 3.2 ft / 1.0 m
   Roll period: 15.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.69
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.582
   Length to Beam Ratio: 8.00 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   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:      28.08 ft / 8.56 m
      - Forecastle (20 %):   26.08 ft / 7.95 m
      - Mid (50 %):      24.08 ft / 7.34 m (16.08 ft / 4.90 m aft of break)
      - Quarterdeck (15 %):   16.08 ft / 4.90 m
      - Stern:      16.08 ft / 4.90 m
      - Average freeboard:   20.94 ft / 6.38 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 86.6 %
      - Above water (accommodation/working, high = better): 154.9 %
   Waterplane Area: 24,781 Square feet or 2,302 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 119 lbs/sq ft or 583 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.77
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

100t Fire Control
25t Sehendes Auge
25t Markoni Installation
25t Torpedoes, 5 per tube
25t Extra supplies for long range cruises
100t Reserve


Ersatz Roon, Brandenburg Heavy Cruiser laid down 1918 (Engine 1916)

Displacement:
   11,000 t light; 11,611 t standard; 12,675 t normal; 13,526 t full load

Dimensions: Length overall / water x beam x draught
   557.76 ft / 550.75 ft x 78.74 ft x 20.01 ft (normal load)
   170.00 m / 167.87 m x 24.00 m  x 6.10 m

Armament:
      9 - 9.45" / 240 mm guns (3x3 guns), 418.88lbs / 190.00kg shells, 1908 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, all amidships
      2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1916 Model
     Anti-aircraft guns in deck mount
     on centreline amidships, all raised guns - superfiring
   Weight of broadside 4,196 lbs / 1,903 kg
   Shells per gun, main battery: 150
   4 - 19.7" / 500 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.72" / 120 mm   357.94 ft / 109.10 m   14.76 ft / 4.50 m
   Ends:   1.97" / 50 mm   192.78 ft / 58.76 m   14.76 ft / 4.50 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4.33" / 110 mm   1.97" / 50 mm      3.94" / 100 mm
   2nd:   1.97" / 50 mm   0.20" / 5 mm            -

   - Armour deck: 1.57" / 40 mm, Conning tower: 3.94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 53,943 shp / 40,241 Kw = 27.00 kts
   Range 9,125nm at 12.00 kts
   Bunker at max displacement = 1,916 tons

Complement:
   596 - 776

Cost:
   £2.219 million / $8.877 million

Distribution of weights at normal displacement:
   Armament: 528 tons, 4.2 %
   Armour: 2,687 tons, 21.2 %
      - Belts: 1,283 tons, 10.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 507 tons, 4.0 %
      - Armour Deck: 850 tons, 6.7 %
      - Conning Tower: 46 tons, 0.4 %
   Machinery: 2,010 tons, 15.9 %
   Hull, fittings & equipment: 5,516 tons, 43.5 %
   Fuel, ammunition & stores: 1,675 tons, 13.2 %
   Miscellaneous weights: 260 tons, 2.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18,411 lbs / 8,351 Kg = 43.6 x 9.4 " / 240 mm shells or 2.4 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 4.7 ft / 1.4 m
   Roll period: 15.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.49
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.511
   Length to Beam Ratio: 6.99 : 1
   'Natural speed' for length: 23.47 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 14.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.08 ft / 8.56 m
      - Forecastle (20 %):   26.08 ft / 7.95 m
      - Mid (50 %):      24.08 ft / 7.34 m (16.08 ft / 4.90 m aft of break)
      - Quarterdeck (15 %):   16.08 ft / 4.90 m
      - Stern:      16.08 ft / 4.90 m
      - Average freeboard:   20.94 ft / 6.38 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 86.3 %
      - Above water (accommodation/working, high = better): 178.2 %
   Waterplane Area: 29,190 Square feet or 2,712 Square metres
   Displacement factor (Displacement / loading): 113 %
   Structure weight / hull surface area: 133 lbs/sq ft or 648 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.70
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

Korpen

The 2nd one is by far the better one. I think the mix of 17 & 24cm guns will just interfere with the shooting if used against a single target.
Another problem is that with barbarettes you should use 250ton FC, not 100 ton.

However, my main issue against them would be their speed. The main opponents to be judged against for ships such as this would be cruisers of all kinds. Her speed is comparable to the 1912 engine generation battlecruisers, against whom the ship is pure fodder. But the main problem IMO is that she is slower then most other cruisers as well, so even under the most favourable circumstances she would be unable to run down  or keep away the hordes with 28-29kts cruiser that are around. I think it is worth to make the ship larger if that means getting 29kts max speed, both to be sure to get away from Swiss BCs and to keep up with Oranje cruisers.

Card-carrying member of the Battlecruiser Fan Club.

P3D

At least 28kts to have the same speed as the other Brandenburg light/battlecruisers.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Sachmle

Something like this then? 500t heavier, and cost me 125nm range, but got 28kts. Also made the misc weight 250t FC, 25t LRW, 8t Torps, and the rest is extra..even though I though CRUISERS used the 100t FC. IDK, nor do I really care. Either way here is the updated version.

Ersatz Roon, Brandenburg Heavy Cruiser laid down 1918 (Engine 1916)

Displacement:
   11,500 t light; 12,121 t standard; 13,198 t normal; 14,059 t full load

Dimensions: Length overall / water x beam x draught
   557.76 ft / 550.75 ft x 78.74 ft x 20.34 ft (normal load)
   170.00 m / 167.87 m x 24.00 m  x 6.20 m

Armament:
      9 - 9.45" / 240 mm guns (3x3 guns), 418.88lbs / 190.00kg shells, 1908 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      8 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, all amidships
      2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1916 Model
     Anti-aircraft guns in deck mount
     on centreline amidships, all raised guns - superfiring
   Weight of broadside 4,196 lbs / 1,903 kg
   Shells per gun, main battery: 150
   4 - 19.7" / 500 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   4.72" / 120 mm   357.94 ft / 109.10 m   14.76 ft / 4.50 m
   Ends:   1.97" / 50 mm   192.78 ft / 58.76 m   14.76 ft / 4.50 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   4.33" / 110 mm   1.97" / 50 mm      3.94" / 100 mm
   2nd:   1.97" / 50 mm   0.20" / 5 mm            -

   - Armour deck: 1.57" / 40 mm, Conning tower: 3.94" / 100 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 64,387 shp / 48,032 Kw = 28.00 kts
   Range 9,000nm at 12.00 kts
   Bunker at max displacement = 1,938 tons

Complement:
   615 - 800

Cost:
   £2.363 million / $9.452 million

Distribution of weights at normal displacement:
   Armament: 528 tons, 4.0 %
   Armour: 2,699 tons, 20.4 %
      - Belts: 1,284 tons, 9.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 507 tons, 3.8 %
      - Armour Deck: 860 tons, 6.5 %
      - Conning Tower: 47 tons, 0.4 %
   Machinery: 2,399 tons, 18.2 %
   Hull, fittings & equipment: 5,575 tons, 42.2 %
   Fuel, ammunition & stores: 1,698 tons, 12.9 %
   Miscellaneous weights: 300 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     17,264 lbs / 7,831 Kg = 40.9 x 9.4 " / 240 mm shells or 2.2 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 4.4 ft / 1.3 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.50
   Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.524
   Length to Beam Ratio: 6.99 : 1
   'Natural speed' for length: 23.47 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 64
   Bow angle (Positive = bow angles forward): 14.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.08 ft / 8.56 m
      - Forecastle (20 %):   26.08 ft / 7.95 m
      - Mid (50 %):      24.08 ft / 7.34 m (16.08 ft / 4.90 m aft of break)
      - Quarterdeck (15 %):   16.08 ft / 4.90 m
      - Stern:      16.08 ft / 4.90 m
      - Average freeboard:   20.94 ft / 6.38 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.7 %
      - Above water (accommodation/working, high = better): 174.7 %
   Waterplane Area: 29,530 Square feet or 2,743 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 132 lbs/sq ft or 646 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.67
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

eltf177

Ersatz Odin, Brandenburgian Panzerkreuzer laid down 1918 (Engine 1916)

Machinery:
   No fuel, Internal combustion motors,

*********

Seems to be a problem here...

Sachmle

Quote from: eltf177 on April 27, 2009, 04:42:30 AM
Ersatz Odin, Brandenburgian Panzerkreuzer laid down 1918 (Engine 1916)

Machinery:
   No fuel, Internal combustion motors,

*********

Seems to be a problem here...

That's really weird, cuz in the SS it says oil fired boilers, steam turbines. Anyway I fixed the previous post, but Roon seems the be the superior ships, although Oden is a nice long legged colonial cruiser/commerce raider.
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

The Rock Doctor

I think Roon is the better design, but that she needs another two knots or so to at least match the speed of Orange cruisers that may be engaged in trade warfare.  The cost of that extra speed might be high, though.


Sachmle

Something new. Lemme know what you guys think? I would have made thicker armor, but wanted to come in under the Moltke's, which this ship has a higher thrown weight of shell than BTW.  ;)


Ersatz Fürst Bismarck, Brandenburg Großer Kreuzer laid down 1918 (Engine 1916)

Displacement:
   14,000 t light; 14,730 t standard; 16,388 t normal; 17,714 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 550.69 ft x 78.74 ft x 29.53 ft (normal load)
   170.00 m / 167.85 m x 24.00 m  x 9.00 m

Armament:
      9 - 9.45" / 240 mm guns (3x3 guns), 418.88lbs / 190.00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      8 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      8 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1918 Model
     Quick firing guns in casemate mounts
     on side, evenly spread
     8 guns in hull casemates - Limited use in heavy seas
      6 - 1.97" / 50.0 mm guns in single mounts, 3.75lbs / 1.70kg shells, 1918 Model
     Anti-aircraft guns in deck mounts
     on centreline, evenly spread, all raised mounts
      4 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1918 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 4,639 lbs / 2,104 kg
   Shells per gun, main battery: 150
   4 - 19.7" / 500 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.51" / 140 mm   358.10 ft / 109.15 m   16.40 ft / 5.00 m
   Ends:   1.97" / 50 mm   192.59 ft / 58.70 m   13.94 ft / 4.25 m
   Upper:   2.76" / 70 mm   194.39 ft / 59.25 m   16.40 ft / 5.00 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   5.91" / 150 mm   2.76" / 70 mm      5.51" / 140 mm
   2nd:   1.97" / 50 mm         -               -
   3rd:   2.76" / 70 mm   0.98" / 25 mm      0.98" / 25 mm

   - Armour deck: 1.97" / 50 mm, Conning tower: 5.51" / 140 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 84,000 shp / 62,664 Kw = 29.24 kts
   Range 8,900nm at 14.00 kts
   Bunker at max displacement = 2,984 tons

Complement:
   723 - 941

Cost:
   £2.835 million / $11.342 million

Distribution of weights at normal displacement:
   Armament: 583 tons, 3.6 %
   Armour: 3,856 tons, 23.5 %
      - Belts: 2,022 tons, 12.3 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 752 tons, 4.6 %
      - Armour Deck: 1,006 tons, 6.1 %
      - Conning Tower: 77 tons, 0.5 %
   Machinery: 3,130 tons, 19.1 %
   Hull, fittings & equipment: 6,111 tons, 37.3 %
   Fuel, ammunition & stores: 2,388 tons, 14.6 %
   Miscellaneous weights: 320 tons, 2.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19,111 lbs / 8,668 Kg = 45.3 x 9.4 " / 240 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.53
   Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.448
   Length to Beam Ratio: 6.99 : 1
   'Natural speed' for length: 23.47 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 13.80 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.71 ft / 8.75 m
      - Forecastle (25 %):   26.66 ft / 8.13 m
      - Mid (70 %):      24.61 ft / 7.50 m (16.40 ft / 5.00 m aft of break)
      - Quarterdeck (15 %):   16.40 ft / 5.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   23.32 ft / 7.11 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 95.4 %
      - Above water (accommodation/working, high = better): 169.7 %
   Waterplane Area: 27,613 Square feet or 2,565 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 136 lbs/sq ft or 666 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.48
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

Guinness

I like it. But then again, I've had a bit of a thing for junior BCs lately.

I especially like that it fits in a type 2 DD, which is a handy attribute I think.

P3D

I see no worth in 50-70mm belts. You need 75-80mm to keep out 6" shells reliably.
I'd have 200 shells per gun.
Freeboard is a bit on the high side, you could save a few tons there imho.
You should not need that deep belt underwater for a cruiser. Small-medium calibers lose speed faster in water.
Bit too deep and too beamy ship with too fine lines.

Pretty decent ships otherwise.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Sachmle

I'm ok w/ a 7/1 L:B ratio...so didn't do anything to the width, but I hadn't noticed that the 9m depth had killed the BC to the tune of 0.448. So, I dropped the draught to 8m which brought the BC up to 0.511, still low, but acceptable. Decided that the casemates were a little old school, plus likely to get wet, so I went w/ all deck mounts. Due to deck space issues I had to cut them from 16 total to 10 total, but used the weight saved to up the armor across the board. Belts are now 175mm, turret face is 24cm, CT is 26cm, and barbettes are 175mm. Cost me 0.04kts and unfortunately seakeeping and steadiness.

Ersatz Fürst Bismarck, Brandenburg Großer Kreuzer laid down 1918 (Engine 1916)

Displacement:
   14,000 t light; 14,947 t standard; 16,624 t normal; 17,965 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 550.75 ft x 78.74 ft x 26.25 ft (normal load)
   170.00 m / 167.87 m x 24.00 m  x 8.00 m

Armament:
      9 - 9.45" / 240 mm guns (3x3 guns), 418.88lbs / 190.00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      10 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, evenly spread, 4 raised mounts
      6 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1918 Model
     Anti-aircraft guns in deck mounts
     on centreline, evenly spread, all raised mounts
      4 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1918 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 4,308 lbs / 1,954 kg
   Shells per gun, main battery: 250
   4 - 19.7" / 500 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   6.89" / 175 mm   360.89 ft / 110.00 m   13.94 ft / 4.25 m
   Ends:   2.95" / 75 mm   189.80 ft / 57.85 m   13.94 ft / 4.25 m
     Main Belt covers 101 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.45" / 240 mm   2.95" / 75 mm      6.89" / 175 mm
   2nd:   1.97" / 50 mm   0.98" / 25 mm            -

   - Armour deck: 1.97" / 50 mm, Conning tower: 9.45" / 240 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 87,000 shp / 64,902 Kw = 29.20 kts
   Range 8,900nm at 14.00 kts
   Bunker at max displacement = 3,018 tons

Complement:
   731 - 951

Cost:
   £2.797 million / $11.190 million

Distribution of weights at normal displacement:
   Armament: 542 tons, 3.3 %
   Armour: 3,840 tons, 23.1 %
      - Belts: 1,780 tons, 10.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 865 tons, 5.2 %
      - Armour Deck: 1,063 tons, 6.4 %
      - Conning Tower: 133 tons, 0.8 %
   Machinery: 3,241 tons, 19.5 %
   Hull, fittings & equipment: 6,057 tons, 36.4 %
   Fuel, ammunition & stores: 2,624 tons, 15.8 %
   Miscellaneous weights: 320 tons, 1.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19,344 lbs / 8,774 Kg = 45.9 x 9.4 " / 240 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 68 %
         - Recoil effect (Restricted arc if above 1.00): 0.50
   Seaboat quality  (Average = 1.00): 1.10

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.511
   Length to Beam Ratio: 6.99 : 1
   'Natural speed' for length: 23.47 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   Bow angle (Positive = bow angles forward): 14.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.02 ft / 8.54 m
      - Forecastle (25 %):   26.02 ft / 7.93 m
      - Mid (70 %):      24.02 ft / 7.32 m (16.01 ft / 4.88 m aft of break)
      - Quarterdeck (15 %):   16.01 ft / 4.88 m
      - Stern:      16.01 ft / 4.88 m
      - Average freeboard:   22.76 ft / 6.94 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.0 %
      - Above water (accommodation/working, high = better): 173.2 %
   Waterplane Area: 29,191 Square feet or 2,712 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 134 lbs/sq ft or 656 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.03
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

Sachmle

Of course here's one w/ more speed and less armour on 600t heavier.

Ersatz Fürst Bismarck, Brandenburg Großer Kreuzer laid down 1918 (Engine 1916)

Displacement:
   14,600 t light; 15,529 t standard; 16,623 t normal; 17,498 t full load

Dimensions: Length overall / water x beam x draught
   557.75 ft / 550.75 ft x 78.74 ft x 26.25 ft (normal load)
   170.00 m / 167.87 m x 24.00 m  x 8.00 m

Armament:
      9 - 9.45" / 240 mm guns (3x3 guns), 418.88lbs / 190.00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      8 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1918 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships, 4 raised mounts - superfiring
      6 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1918 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.30" / 7.7 mm guns in single mounts, 0.01lbs / 0.01kg shells, 1918 Model
     Machine guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 4,203 lbs / 1,906 kg
   Shells per gun, main battery: 250
   4 - 19.7" / 500 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   6.10" / 155 mm   389.60 ft / 118.75 m   13.94 ft / 4.25 m
   Ends:   2.95" / 75 mm   160.76 ft / 49.00 m   13.94 ft / 4.25 m
     Main Belt covers 109 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.45" / 240 mm   2.95" / 75 mm      6.10" / 155 mm
   2nd:   1.97" / 50 mm   0.98" / 25 mm            -

   - Armour deck: 1.97" / 50 mm, Conning tower: 11.02" / 280 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 105,000 shp / 78,330 Kw = 30.56 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 1,969 tons

Complement:
   731 - 951

Cost:
   £3.005 million / $12.020 million

Distribution of weights at normal displacement:
   Armament: 528 tons, 3.2 %
   Armour: 3,673 tons, 22.1 %
      - Belts: 1,647 tons, 9.9 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 808 tons, 4.9 %
      - Armour Deck: 1,063 tons, 6.4 %
      - Conning Tower: 155 tons, 0.9 %
   Machinery: 3,912 tons, 23.5 %
   Hull, fittings & equipment: 6,166 tons, 37.1 %
   Fuel, ammunition & stores: 2,023 tons, 12.2 %
   Miscellaneous weights: 320 tons, 1.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,055 lbs / 7,282 Kg = 38.1 x 9.4 " / 240 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 4.2 ft / 1.3 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 61 %
         - Recoil effect (Restricted arc if above 1.00): 0.48
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.511
   Length to Beam Ratio: 6.99 : 1
   'Natural speed' for length: 23.47 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 61
   Bow angle (Positive = bow angles forward): 13.70 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.71 ft / 8.75 m
      - Forecastle (25 %):   27.07 ft / 8.25 m
      - Mid (70 %):      24.61 ft / 7.50 m (16.40 ft / 5.00 m aft of break)
      - Quarterdeck (15 %):   16.40 ft / 5.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   23.48 ft / 7.16 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108.7 %
      - Above water (accommodation/working, high = better): 178.6 %
   Waterplane Area: 29,190 Square feet or 2,712 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 136 lbs/sq ft or 663 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.12
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

Korpen

Quote from: Sachmle on May 31, 2009, 11:12:13 AM
Of course here's one w/ more speed and less armour on 600t heavier.

Ersatz Fürst Bismarck, Brandenburg Großer Kreuzer laid down 1918 (Engine 1916)

Nice one.
Have you considered increasing her range a bit? If she will be used for scouting it can be expected that she will do allot of high-speed steaming for a slower formation, so 2-4000nm more range would be very usefull I think, perhaps at the cost of some ammunition (of which she got allot).
Card-carrying member of the Battlecruiser Fan Club.

P3D

I see that weight creep already started.

I noticed that it is best to fix minimal requirements and stick to that. Extra speed, armor, etc. might increase the weight so much that a scratch design of the next gun caliber category (11-12" instead of 9.45") wouldn't be much more expensive.

The 29kts version is better, you are sacrificing (high-speed) range for a ship that is designed for the Pacific/IO.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas