Rohan ships 1916, 1917, & Beyond

[TexanCowboy]

9 12'' then? It would be more efficient, say, a faster Snowmane.

[Sachmle]

9 12'' then? It would be more efficient, say, a faster Snowmane.

TC, if you'll note the original design. It has triple 12", 2 of them. 3 would cost weight, speed, or armor.

[mentat]

  I like the Combat Cruiser - very handy and not too pricey

But given it might come up against 9-11" gun opposition ? - I think a bit more armour around the Mags would be worthwhile - esp the Deck

[Tanthalas]

  I like the Combat Cruiser - very handy and not too pricey

But given it might come up against 9-11" gun opposition ? - I think a bit more armour around the Mags would be worthwhile - esp the Deck

I wanted a ship with resonable firepower that could hit 30 knots (absolute requirement) Honestly that one is about as good as I can get, for the price.

[Borys]

But given it might come up against 9-11" gun opposition ? - I think a bit more armour around the Mags would be worthwhile - esp the Deck

Then they will run ...
Borys

[Tanthalas]

But given it might come up against 9-11" gun opposition ? - I think a bit more armour around the Mags would be worthwhile - esp the Deck

Then they will run ...
Borys

actualy fairly accurate, if its up against one of the many 9-10" cruisers out there, it can either run away or maintain enough range to pumel most of them at range their guns cant even reach.

[Jefgte]

Well balanced combat cruiser.


Jef ;)

[Tanthalas]

The Rohinium take on the large light cruisers that are becoming so prolific.

Light Cruiser Experimental, Rohan Light Cruiser laid down 1917 (Engine 1916)

Displacement:
   8,600 t light; 8,891 t standard; 10,046 t normal; 10,970 t full load

Dimensions: Length overall / water x beam x draught
   600.00 ft / 590.00 ft x 59.00 ft x 21.00 ft (normal load)
   182.88 m / 179.83 m x 17.98 m  x 6.40 m

Armament:
      10 - 6.00" / 152 mm guns (5x2 guns), 108.00lbs / 48.99kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on centreline, evenly spread, 2 raised mounts
   Weight of broadside 1,080 lbs / 490 kg
   Shells per gun, main battery: 150
   6 - 20.0" / 508 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.00" / 76 mm   438.00 ft / 133.50 m   14.00 ft / 4.27 m
   Ends:   Unarmoured
     Main Belt covers 114 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armour deck: 1.50" / 38 mm, Conning tower: 3.00" / 76 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 84,000 shp / 62,664 Kw = 32.00 kts
   Range 7,000nm at 15.00 kts
   Bunker at max displacement = 2,079 tons

Complement:
   501 - 652

Cost:
   £1.550 million / $6.200 million

Distribution of weights at normal displacement:
   Armament: 135 tons, 1.3 %
   Armour: 1,471 tons, 14.6 %
      - Belts: 750 tons, 7.5 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 58 tons, 0.6 %
      - Armour Deck: 633 tons, 6.3 %
      - Conning Tower: 30 tons, 0.3 %
   Machinery: 3,130 tons, 31.2 %
   Hull, fittings & equipment: 3,665 tons, 36.5 %
   Fuel, ammunition & stores: 1,446 tons, 14.4 %
   Miscellaneous weights: 200 tons, 2.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     9,911 lbs / 4,495 Kg = 91.8 x 6.0 " / 152 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 3.0 ft / 0.9 m
   Roll period: 14.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0.38
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has low quarterdeck
   Block coefficient: 0.481
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 24.29 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   Bow angle (Positive = bow angles forward): 25.46 degrees
   Stern overhang: -6.00 ft / -1.83 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      21.00 ft / 6.40 m
      - Forecastle (20 %):   21.00 ft / 6.40 m
      - Mid (50 %):      21.00 ft / 6.40 m
      - Quarterdeck (15 %):   12.00 ft / 3.66 m (21.00 ft / 6.40 m before break)
      - Stern:      12.00 ft / 3.66 m
      - Average freeboard:   19.65 ft / 5.99 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113.8 %
      - Above water (accommodation/working, high = better): 162.4 %
   Waterplane Area: 22,800 Square feet or 2,118 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 98 lbs/sq ft or 478 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.40
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

[Tanthalas]

This ship is just a study as to how large a ship can be built on a 30 knot minimum restriction.  There are no current plans to build it but Opinions are welcome.

Rejected, Reviled, & Revolting, Rohan Battlecruiser laid down 1917 (Engine 1916)

Displacement:
   26,600 t light; 27,946 t standard; 32,787 t normal; 36,660 t full load

Dimensions: Length overall / water x beam x draught
   808.00 ft / 794.00 ft x 96.00 ft x 30.00 ft (normal load)
   246.28 m / 242.01 m x 29.26 m  x 9.14 m

Armament:
      6 - 15.50" / 394 mm guns (3x2 guns), 1,861.94lbs / 844.56kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 4.50" / 114 mm guns (8x2 guns), 45.56lbs / 20.67kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships, 4 raised mounts - superfiring
      6 - 4.50" / 114 mm guns (3x2 guns), 45.56lbs / 20.67kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, majority aft, all raised mounts - superfiring
      8 - 1.50" / 38.1 mm guns (4x2 guns), 1.69lbs / 0.77kg shells, 1917 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, evenly spread
   Weight of broadside 12,187 lbs / 5,528 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.00" / 178 mm   539.00 ft / 164.29 m   16.00 ft / 4.88 m
   Ends:   Unarmoured
     Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
      1.50" / 38 mm   539.00 ft / 164.29 m   27.01 ft / 8.23 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.0" / 279 mm   4.00" / 102 mm      10.0" / 254 mm
   2nd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   4th:   1.00" / 25 mm   1.00" / 25 mm      1.00" / 25 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 6.00" / 152 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 126,000 shp / 93,153 Kw = 30.00+ kts
   Range 8,525nm at 19.00 kts
   Bunker at max displacement = 8,714 tons

Complement:
   1,217 - 1,583

Cost:
   £5.204 million / $20.815 million

Distribution of weights at normal displacement:
   Armament: 1,523 tons, 4.6 %
   Armour: 6,998 tons, 21.3 %
      - Belts: 2,536 tons, 7.7 %
      - Torpedo bulkhead: 808 tons, 2.5 %
      - Armament: 1,639 tons, 5.0 %
      - Armour Deck: 1,882 tons, 5.7 %
      - Conning Tower: 132 tons, 0.4 %
   Machinery: 4,652 tons, 14.2 %
   Hull, fittings & equipment: 13,027 tons, 39.7 %
   Fuel, ammunition & stores: 6,187 tons, 18.9 %
   Miscellaneous weights: 400 tons, 1.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     39,098 lbs / 17,735 Kg = 21.0 x 15.5 " / 394 mm shells or 5.5 torpedoes
   Stability (Unstable if below 1.00): 1.15
   Metacentric height 6.1 ft / 1.9 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.58
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.502
   Length to Beam Ratio: 8.27 : 1
   'Natural speed' for length: 28.18 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 26.56 degrees
   Stern overhang: -8.00 ft / -2.44 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      28.00 ft / 8.53 m
      - Forecastle (20 %):   28.00 ft / 8.53 m (19.00 ft / 5.79 m aft of break)
      - Mid (50 %):      19.00 ft / 5.79 m
      - Quarterdeck (15 %):   19.00 ft / 5.79 m
      - Stern:      19.00 ft / 5.79 m
      - Average freeboard:   20.80 ft / 6.34 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 104.3 %
      - Above water (accommodation/working, high = better): 151.3 %
   Waterplane Area: 50,871 Square feet or 4,726 Square metres
   Displacement factor (Displacement / loading): 113 %
   Structure weight / hull surface area: 179 lbs/sq ft or 876 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.11
      - 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

400 tons Misc. Weight
250 tons FC
50 tons Radar Instalation
25 tons Wireless
25 tons Crew Comfort (Heating, Cooling, Aditional Coffee pots)
50 tons Reserved

[maddox]

She does as good as my attempts, but with bigger guns.

[TexanCowboy]

It's a Renown/Repulse. Could be useful if you can get Walter to post the Renowapulse.

[Sachmle]

You mean Repulnown, the twin BC?

[miketr]

Realising the need for Raiders as well as Escorts for the new Fast Battleships, Rohan has revived the Combat Cruiser Class.  Here the new class to be named for the previous generation of Combat Cruisers (which I have mostly scraped)

Sorry for the late response...

A similiar concept to my latest armored cruisers.

http://www.navalism.org/index.php?topic=673.msg48000#msg48000

My design is 2,000 tons heavier so it has some advantages but your ship has a MUCH heavier secondary battery.  As a battle line escort it has much to commend it, however; some battle cruisers are getting near 30 knots with much heavier armor and weapons.  Plus like my design it has issues facing older BC's with heavy armor even if 5 knots or more edge in speed.

Michael

[Tanthalas]

no worries mike, yeah I have played with the 6X12" ship forever, but I finaly managed to get one I thought was worth building.

[Tanthalas]

It's a Renown/Repulse. Could be useful if you can get Walter to post the Renowapulse.

I did loosley base it off R&R although I would need to build 3 of them for the BCF.  Originaly I had no intention whatsoever of building them, but the more I look at em the more tempting its geting.