Cross Mirage, As Completed

[Valles]

Cross Mirage (AON), Maoria Battleship laid down 1912

Displacement:
   34,352 t light; 37,010 t standard; 40,911 t normal; 44,032 t full load

Dimensions: Length overall / water x beam x draught
   614.89 ft / 606.96 ft x 101.71 ft x 32.81 ft (normal load)
   187.42 m / 185.00 m x 31.00 m  x 10.00 m

Armament:
      10 - 15.00" / 381 mm guns (5x2 guns), 2,000.00lbs / 907.18kg shells, 1912 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 2 raised mounts
      16 - 5.91" / 150 mm guns (8x2 guns), 110.23lbs / 50.00kg shells, 1912 Model
     Quick firing guns in deck mounts with hoists
     on side ends, evenly spread
      4 - 1.38" / 35.0 mm guns in single mounts, 1.32lbs / 0.60kg shells, 1912 Model
     Anti-aircraft guns in deck mounts with hoists
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 21,769 lbs / 9,874 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   15.0" / 380 mm   424.87 ft / 129.50 m   18.86 ft / 5.75 m
   Ends:   Unarmoured
     Main Belt covers 108 % of normal length

   - Torpedo Bulkhead:
      2.95" / 75 mm   424.87 ft / 129.50 m   31.79 ft / 9.69 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   11.8" / 300 mm      15.0" / 380 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      1.97" / 50 mm
   3rd:   0.98" / 25 mm   0.39" / 10 mm      0.98" / 25 mm

   - Armour deck: 4.72" / 120 mm, Conning tower: 14.96" / 380 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 36,111 shp / 26,939 Kw = 20.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 7,022 tons

Complement:
   1,437 - 1,869

Cost:
   £3.349 million / $13.397 million

Distribution of weights at normal displacement:
   Armament: 2,316 tons, 5.7 %
   Armour: 15,617 tons, 38.2 %
      - Belts: 5,235 tons, 12.8 %
      - Torpedo bulkhead: 1,476 tons, 3.6 %
      - Armament: 4,172 tons, 10.2 %
      - Armour Deck: 4,352 tons, 10.6 %
      - Conning Tower: 383 tons, 0.9 %
   Machinery: 1,440 tons, 3.5 %
   Hull, fittings & equipment: 12,980 tons, 31.7 %
   Fuel, ammunition & stores: 6,559 tons, 16.0 %
   Miscellaneous weights: 2,000 tons, 4.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     54,106 lbs / 24,542 Kg = 32.1 x 15.0 " / 381 mm shells or 10.0 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 6.1 ft / 1.8 m
   Roll period: 17.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 53 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality  (Average = 1.00): 1.26

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.707
   Length to Beam Ratio: 5.97 : 1
   'Natural speed' for length: 24.64 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 42
   Bow angle (Positive = bow angles forward): 4.00 degrees
   Stern overhang: 6.56 ft / 2.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19.69 ft / 6.00 m
      - Forecastle (15 %):   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:   16.60 ft / 5.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 77.0 %
      - Above water (accommodation/working, high = better): 108.3 %
   Waterplane Area: 49,788 Square feet or 4,625 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 197 lbs/sq ft or 963 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.38
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

900 tons barbette reinforcement
250 tons battleship fire control
125 tons damage control
100 tons 10-bed hospital
75 tons flagship appointments
50 tons climate control

500 tons design reserve

Main belt is +10% quality and sloped 15 degrees.

3x 25mm torpedo bulkheads, each inboard of a 1.5m fluid void and a 1.5m air void and one layer inboard of the other

[maddox]

That's a monster.

[Ithekro]

Hopefully it with have a different paint job in times of war...that red in the center is a perfect target for ships, planes, and submarines.

[Sachmle]

Hopefully it with have a different paint job in times of war...that red in the center is a perfect target for ships, planes, and submarines.

SHHHHHHHHHHHHHHH!!!!!!!!!!

[miketr]

Its big that is sure.

Michael

[Nobody]

One can only wonder how he managed to put that much armor, guns & misc weight inside that hull.

[maddox]

Low speed, long hull. It helps.

If I would do Brittanie on 20 kts, I will free up a lot of weight for armor.

Maorian Floating fortress laid down 1915 (Engine 1912)

Displacement:
   34.998 t light; 37.170 t standard; 40.960 t normal; 43.992 t full load

Dimensions: Length overall / water x beam x draught
   692,26 ft / 688,98 ft x 114,83 ft x 28,87 ft (normal load)
   211,00 m / 210,00 m x 35,00 m  x 8,80 m

Armament:
      10 - 14,96" / 380 mm guns (4 mounts), 1.807,79lbs / 820,00kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      20 - 5,51" / 140 mm guns (10x2 guns), 92,59lbs / 42,00kg shells, 1915 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships, 4 raised mounts - superfiring
      6 - 1,46" / 37,0 mm guns (4 mounts), 1,55lbs / 0,70kg shells, 1915 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
   Weight of broadside 19.939 lbs / 9.044 kg
   Shells per gun, main battery: 120

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   15,0" / 381 mm   365,16 ft / 111,30 m   18,00 ft / 5,49 m
   Ends:   Unarmoured
     Main Belt covers 82% of normal length

   - Torpedo Bulkhead:
      2,00" / 51 mm   365,16 ft / 111,30 m   27,53 ft / 8,39 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15,0" / 381 mm   11,0" / 279 mm      15,0" / 381 mm
   2nd:   2,00" / 51 mm   1,00" / 25 mm      3,00" / 76 mm
   3rd:   0,50" / 13 mm         -               -

   - Armour deck: 4,75" / 121 mm, Conning tower: 15,00" / 381 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 34.958 shp / 26.079 Kw = 20,00 kts
   Range 7.000nm at 16,00 kts
   Bunker at max displacement = 6.823 tons

Complement:
   1.439 - 1.871

Cost:
   £4,880 million / $19,519 million

Distribution of weights at normal displacement:
   Armament: 2.303 tons, 5,6%
   Armour: 14.928 tons, 36,4%
      - Belts: 4.587 tons, 11,2%
      - Torpedo bulkhead: 744 tons, 1,8%
      - Armament: 3.996 tons, 9,8%
      - Armour Deck: 5.217 tons, 12,7%
      - Conning Tower: 384 tons, 0,9%
   Machinery: 1.394 tons, 3,4%
   Hull, fittings & equipment: 15.373 tons, 37,5%
   Fuel, ammunition & stores: 5.962 tons, 14,6%
   Miscellaneous weights: 1.000 tons, 2,4%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     63.823 lbs / 28.950 Kg = 38,1 x 15,0 " / 380 mm shells or 12,0 torpedoes
   Stability (Unstable if below 1.00): 1,09
   Metacentric height 7,3 ft / 2,2 m
   Roll period: 17,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,49
   Seaboat quality  (Average = 1.00): 1,20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,628
   Length to Beam Ratio: 6,00 : 1
   'Natural speed' for length: 26,25 kts
   Power going to wave formation at top speed: 38 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): -5,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      26,25 ft / 8,00 m
      - Forecastle (25%):   17,22 ft / 5,25 m
      - Mid (50%):      17,22 ft / 5,25 m
      - Quarterdeck (22%):   17,06 ft / 5,20 m
      - Stern:      17,06 ft / 5,20 m
      - Average freeboard:   18,07 ft / 5,51 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 69,5%
      - Above water (accommodation/working, high = better): 135,0%
   Waterplane Area: 59.370 Square feet or 5.516 Square metres
   Displacement factor (Displacement / loading): 110%
   Structure weight / hull surface area: 205 lbs/sq ft or 1.002 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,98
      - Longitudinal: 1,17
      - 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

[Valles]

Hopefully it with have a different paint job in times of war...that red in the center is a perfect target for ships, planes, and submarines.

My memory is that the USN carried similar - though not identically laid out - identification flashes during WW2, so I really doubt that having that mark to aim for will do much to improve the ease of actually hitting.

Or accomplishing much if they do.

[Ithekro]

I know of no American warship that had just a bright verital line on the middle of their hull.  I know of many that used dazzle paint jobs at mutiple angles and shades of blue and grey, fails bows and bow waves painted on to confuse submarines of where the front of this ship was, the size  and distance to or of the ship, and what speed it was going.

[Valles]

No, not on the side. But IIRC there was a practice of painting the tops of specific - and varying - turrets in different bright colors to ease identification from the air.

[Ithekro]

The top yes, but it is hard to hide from an airplane anyway.  At this point in time, that won't be so much of a worry, since only the larger land based bomber can even carry a bomb big enough to really do much damage to a ship like this.

I was mostly thinking of the side of the vessel.

[P3D]

I think in the current placement of the secondaries interfere with main battery firing angles (that damn amidships turret). I'd have one of those pairs of mounts superfiring.

What's the machinery arrangement? Turbines and boilers both before and aft of Q turret?

Now nitpicking, feel free to ignore.
Your ship should be more "full" at the end with a 0.707 block coefficient, unlike the drawings. This means that the propellers will get a pretty unoptimized (bad) flow, so the ship might not be able to reach its design speed IRL.

[Valles]

It's hard for me to really tell about the secondaries, but as-is, there really isn't a perfect solution to be had, since there isn't any room to speak of on the islands, either. Not for a full-sized gun mount, anyway. Cross Mirage is simply a fairly crowded design and isn't going to stop being so no matter what I do. Even moving the midships barbette fore or aft and giving up its 'full rotation' ability won't solve that - it'd just free up room to breathe.

You're right about the machinery; The boilers are towards the midships, with the turbines 'endward' and a generator room past them, then finally bus rooms right up against the magazines for B and X. Boiler and turbine rooms are both subdivided laterally once, and there are two longitudinal bulkheads dividing the entire length of the area protected by the torpedo defense system.

So, a total of twelve boiler rooms, six high-pressure turbine rooms, six low-pressure turbine rooms, six generator rooms, and two bus rooms. In theory, steam from any boiler can go directly to any turbine by a minimum of two different routes, but while the insulation around the 'midships' steam piping is as good as could be expected, it's not perfect - so those only get used in battle damage drills or testing cycles. All six generators also have their own direct lines to both busses, which are, in turn, separately connected to the shaft motors.

Unless I forget to write it, you can expect a bit of news about the shake-down cruise's engineering staff burning the Head Designer in effigy, as one expects the overall system to be a stone bitch to work in and around... but it'll be priceless for damage control.

...I really can't make myself face redrawing the hull profile right now. Not after I already redid the upperworks.

If the Mods want to assess some kind of penalty for the recognition bands, they can go right ahead. Maori doctrine has it that the benefits to coordination and internal identification are worth it.

[The Rock Doctor]

A slightly more obvious target, yet a slightly faster one - probably cancels out.

All because of some red paint...

[Tanthalas]

A slightly more obvious target, yet a slightly faster one - probably cancels out.

All because of some red paint...

* Tanthalas *starts painting all his DDs Red so they will go faster*