Reconstruction thoughts

Started by Valles, March 09, 2010, 12:19:53 AM

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The Rock Doctor

Before I go into the huddle with the other Mods, I need some clarification on the freeboard.

First, I'll note that the current rules set limits freeboard changes to 10%. 

As originally built, the ship's draught + average freeboard is 14.2 metres.  The latest sim adds up to 13.02 metres, but has the hull strength for an increas of some kind.  Also, the old sim has a raised forecastle and quarterdeck, whereas the new sim appears to be flush-decked. 

So if you can re-examine and confirm your ideal intentions, I'll have a better snapshot of what we're talking about.

Valles

The raised forecastle and quarterdeck would be razed, then the entire ship permitted to ride 1.3 meters lower.
======================================================

When the mother ship's cannon cracked the signal to return
The clouds were building bastions in the swirling up above
Poseidon the King and the Wind his jester
Dancing with the Lightning Lady Fair
Dancing with the Lightning Lady Fair

The Rock Doctor

Thanks - note the 10%  limit on change I flagged above. 

Valles

*blinks*

...so, you're saying that the alteration of forces and structure starts counting from the average of parts... that aren't there any more.

...Well, if that's the rule.

Guess I'll need two rebuild cycles to 'finish', then.

First iteration would be summat so:

Bardiche Assault, Maori Battleship laid down 1916

Displacement:
   26,871 t light; 28,356 t standard; 31,297 t normal; 33,650 t full load

Dimensions: Length overall / water x beam x draught
   709.39 ft / 705.38 ft x 98.43 ft x 22.97 ft (normal load)
   216.22 m / 215.00 m x 30.00 m  x 7.00 m

Armament:
      10 - 11.81" / 300 mm guns (5x2 guns), 823.82lbs / 373.68kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
      16 - 5.91" / 150 mm guns (8x2 guns), 110.23lbs / 50.00kg shells, 1916 Model
     Quick firing guns in deck mounts with hoists
     on side ends, evenly spread
      4 - 1.38" / 35.0 mm guns in single mounts, 1.10lbs / 0.50kg shells, 1916 Model
     Anti-aircraft guns in deck mounts with hoists
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 10,006 lbs / 4,539 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   493.77 ft / 150.50 m   19.69 ft / 6.00 m
   Ends:   Unarmoured
   Upper:   1.57" / 40 mm   493.77 ft / 150.50 m   9.84 ft / 3.00 m
     Main Belt covers 108 % of normal length

   - Torpedo Bulkhead:
      0.98" / 25 mm   493.77 ft / 150.50 m   22.15 ft / 6.75 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   7.87" / 200 mm      11.8" / 300 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      1.97" / 50 mm
   3rd:   0.98" / 25 mm   0.39" / 10 mm      0.39" / 10 mm

   - Armour deck: 3.94" / 100 mm, Conning tower: 11.81" / 300 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 30,240 shp / 22,559 Kw = 20.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 5,293 tons

Complement:
   1,176 - 1,529

Cost:
   £3.497 million / $13.986 million

Distribution of weights at normal displacement:
   Armament: 1,236 tons, 4.0 %
   Armour: 12,575 tons, 40.2 %
      - Belts: 5,238 tons, 16.7 %
      - Torpedo bulkhead: 398 tons, 1.3 %
      - Armament: 2,680 tons, 8.6 %
      - Armour Deck: 4,006 tons, 12.8 %
      - Conning Tower: 253 tons, 0.8 %
   Machinery: 1,127 tons, 3.6 %
   Hull, fittings & equipment: 11,433 tons, 36.5 %
   Fuel, ammunition & stores: 4,426 tons, 14.1 %
   Miscellaneous weights: 500 tons, 1.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     74,329 lbs / 33,715 Kg = 90.2 x 11.8 " / 300 mm shells or 13.6 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 6.5 ft / 2.0 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0.46
   Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.687
   Length to Beam Ratio: 7.17 : 1
   'Natural speed' for length: 26.56 kts
   Power going to wave formation at top speed: 35 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: 2.00 ft / 0.61 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22.97 ft / 7.00 m
      - Forecastle (15 %):   19.69 ft / 6.00 m
      - Mid (50 %):      19.69 ft / 6.00 m
      - Quarterdeck (15 %):   19.69 ft / 6.00 m
      - Stern:      19.69 ft / 6.00 m
      - Average freeboard:   19.88 ft / 6.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 56.6 %
      - Above water (accommodation/working, high = better): 175.4 %
   Waterplane Area: 55,003 Square feet or 5,110 Square metres
   Displacement factor (Displacement / loading): 124 %
   Structure weight / hull surface area: 162 lbs/sq ft or 790 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.03
      - Longitudinal: 0.99
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Armor deck is 60mm at 1.0 quality + 40mm 1.1 quality detonator plate spaced at 3m (1 deck). Main belt is 1.1 quality sloped 20 degrees.
======================================================

When the mother ship's cannon cracked the signal to return
The clouds were building bastions in the swirling up above
Poseidon the King and the Wind his jester
Dancing with the Lightning Lady Fair
Dancing with the Lightning Lady Fair

The Rock Doctor

What I'm saying is:  "The rule set is designed to prevent people from building light battleships and turning them into heavy battleships by adding ballast."

Valles

...I'm not sure the Bardiches would count as 'light' in any era, but I take your meaning well enough. If I'm over the line in that regard, feel free to mention it. I don't think I'll be able to bring myself to give up entirely on upping their firepower and armor to 'frontline' them again, but 35cm might be more achievable.
======================================================

When the mother ship's cannon cracked the signal to return
The clouds were building bastions in the swirling up above
Poseidon the King and the Wind his jester
Dancing with the Lightning Lady Fair
Dancing with the Lightning Lady Fair

Jefgte

Testing an other rebuilt...

Bardiche converted to Heavy Escort Cruiser...

I change the 300mm guns to 250mm guns.
- 2T3x250mm - A & B
- 6T2x250mm - side -2 superfiring
- Reuse the 150mm guns but in twin mounts 1 deck higher.
- Change the engines & increase range & speed to 25kts.



Bardiche rebuilt, Maoria Heavy Escort Cruiser laid down 1906 (Engine 1920)

Displacement:
   26 620 t light; 28 137 t standard; 29 520 t normal; 30 627 t full load

Dimensions: Length overall / water x beam x draught
   706.93 ft / 705.38 ft x 98.43 ft x 22.97 ft (normal load)
   215.47 m / 215.00 m x 30.00 m  x 7.00 m

Armament:
      6 - 9.84" / 250 mm guns (2x3 guns), 476.75lbs / 216.25kg shells, 1906 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, all raised mounts
      12 - 9.84" / 250 mm guns (6x2 guns), 476.75lbs / 216.25kg shells, 1906 Model
     Breech loading guns in turrets (on barbettes)
     on side, all amidships, 2 raised mounts - superfiring
      16 - 5.91" / 150 mm guns (8x2 guns), 102.98lbs / 46.71kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on side, evenly spread
      8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1918 Model
     Quick firing guns in deck mounts with hoists
     on centreline, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1906 Model
     Quick firing guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 10 245 lbs / 4 647 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   423.23 ft / 129.00 m   13.12 ft / 4.00 m
   Ends:   5.91" / 150 mm   282.12 ft / 85.99 m   13.12 ft / 4.00 m
   Upper:   3.94" / 100 mm   705.38 ft / 215.00 m   9.84 ft / 3.00 m
     Main Belt covers 92 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   5.91" / 150 mm      10.8" / 275 mm
   2nd:   11.8" / 300 mm   5.91" / 150 mm      10.8" / 275 mm
   3rd:   5.91" / 150 mm         -               -
   4th:   2.36" / 60 mm         -               -

   - Armour deck: 2.36" / 60 mm, Conning tower: 11.81" / 300 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 66 000 shp / 49 236 Kw = 25.02 kts
   Range 7 500nm at 12.00 kts
   Bunker at max displacement = 2 490 tons

Complement:
   1 125 - 1 463

Cost:
   £2.331 million / $9.322 million

Distribution of weights at normal displacement:
   Armament: 1 281 tons, 4.3 %
   Armour: 10 619 tons, 36.0 %
      - Belts: 4 711 tons, 16.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 345 tons, 11.3 %
      - Armour Deck: 2 320 tons, 7.9 %
      - Conning Tower: 243 tons, 0.8 %
   Machinery: 2 308 tons, 7.8 %
   Hull, fittings & equipment: 11 988 tons, 40.6 %
   Fuel, ammunition & stores: 2 900 tons, 9.8 %
   Miscellaneous weights: 425 tons, 1.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     50 409 lbs / 22 865 Kg = 105.7 x 9.8 " / 250 mm shells or 4.9 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 5.9 ft / 1.8 m
   Roll period: 17.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 65 %
         - Recoil effect (Restricted arc if above 1.00): 0.50
   Seaboat quality  (Average = 1.00): 1.33

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0.648
   Length to Beam Ratio: 7.17 : 1
   'Natural speed' for length: 26.56 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 3.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      29.53 ft / 9.00 m
      - Forecastle (20 %):   29.53 ft / 9.00 m (19.69 ft / 6.00 m aft of break)
      - Mid (50 %):      19.69 ft / 6.00 m
      - Quarterdeck (20 %):   29.53 ft / 9.00 m (19.69 ft / 6.00 m before break)
      - Stern:      29.53 ft / 9.00 m
      - Average freeboard:   23.62 ft / 7.20 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 61.5 %
      - Above water (accommodation/working, high = better): 176.9 %
   Waterplane Area: 53 088 Square feet or 4 932 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 169 lbs/sq ft or 825 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.13
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

250 tons assorted unplanned weights
25 tons long-range radio installation
250 tons fire control system and paraphenalia

Class of three:
Bardiche
Raging Heart
Reinforce
"You French are fighting for money, while we English are fighting for honor!"
"Everyone is fighting for what they miss. "
Surcouf

eltf177

Quote from: Valles on March 09, 2010, 07:51:19 PM
Bardiche Assault, Maori Battleship laid down 1916

Armament:
      10 - 11.81" / 300 mm guns (5x2 guns), 823.82lbs / 373.68kg shells, 1916 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount 

I'm curious, what is the Main Battery layout of these? I'm thinking A/Q/Y and 2 beam turrets (like "Dreadnought").

Valles

18x250mm was and is, indeed, one of my runner-up concepts, Jef, in case of more extensive alterations getting scotched. There'd be some differences in how I'd do it - I'd probably stash the 150s for use in a later escort cruiser, and go with 100mm for a secondary battery, given that the 250s would be 'handier' than full-on 300mm battleship guns, for instance, but something like that is, indeed, in the realm of possibility. I'd prefer to avoid it because turning her into a cruiser-hunter, however potent, seems like a waste of a battleship's tonnage to me.

Elf, the main battery layout of the 'battleship drafts' is one I've been almost desperate to do, all centerline with A and X and a pyramid Q(R)S midships.
======================================================

When the mother ship's cannon cracked the signal to return
The clouds were building bastions in the swirling up above
Poseidon the King and the Wind his jester
Dancing with the Lightning Lady Fair
Dancing with the Lightning Lady Fair