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Karle94
Post subject: Ragnarök class battleshipPosted: April 2nd, 2015, 9:26 pm
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Joined: November 8th, 2010, 3:07 pm
Location: Norseland
With the Mecca class finished, I thought about other non-Roman ships. I started drawing and come up with a ship for Scandinavia. It was built as a response to the Roman Devestatio class, and other battleships built to counter it. Being much bigger, give or take 25 meters longer, it also had more guns for a total of 10 16 inch guns in 4 turrets. Armor belt is 14 inches thick. Top speed is 25 kts. The armor is thicker than most other ships because of steel of sub-par quality compared to other nations. The ship is smaller, but has more guns and thicker armor than the Neptunus class commisioned in 1919, but is heavier at standard displacement and 1000 tons lighter at full load.

As usual, a wip. I mostly have details left to add before I can call it finished.

[ img ]

RSS Ragnarök, Scandinavian Kingdom Battleship laid down 1915

Displacement:
38 555 t light; 40 620 t standard; 42 615 t normal; 44 210 t full load

Dimensions: Length overall / water x beam x draught
654,00 ft / 654,00 ft x 105,00 ft x 30,00 ft (normal load)
199,34 m / 199,34 m x 32,00 m x 9,14 m

Armament:
10 - 16,00" / 406 mm guns (4 mounts), 2 048,00lbs / 928,96kg shells, 1915 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1905 Model
Breech loading guns in casemate mounts
on side, all amidships
4 - 4,00" / 102 mm guns in single mounts, 32,00lbs / 14,51kg shells, 1915 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 21 608 lbs / 9 801 kg
Shells per gun, main battery: 100
4 - 18,0" / 457,2 mm submerged torpedo tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14,0" / 356 mm 425,00 ft / 129,54 m 16,00 ft / 4,88 m
Ends: 6,00" / 152 mm 154,00 ft / 46,94 m 13,00 ft / 3,96 m
75,00 ft / 22,86 m Unarmoured ends
Main Belt covers 100 % of normal length

- Torpedo Bulkhead:
4,00" / 102 mm 425,00 ft / 129,54 m 13,00 ft / 3,96 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 18,0" / 457 mm 8,00" / 203 mm 12,0" / 305 mm
2nd: 2,00" / 51 mm 1,00" / 25 mm 1,00" / 25 mm

- Armour deck: 6,00" / 152 mm, Conning tower: 16,00" / 406 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 86 887 shp / 64 818 Kw = 25,00 kts
Range 7 500nm at 12,00 kts
Bunker at max displacement = 3 590 tons

Complement:
1 482 - 1 927

Cost:
£5,933 million / $23,732 million

Distribution of weights at normal displacement:
Armament: 2 701 tons, 6,3 %
Armour: 16 584 tons, 38,9 %
- Belts: 4 656 tons, 10,9 %
- Torpedo bulkhead: 818 tons, 1,9 %
- Armament: 4 448 tons, 10,4 %
- Armour Deck: 6 241 tons, 14,6 %
- Conning Tower: 421 tons, 1,0 %
Machinery: 3 291 tons, 7,7 %
Hull, fittings & equipment: 15 979 tons, 37,5 %
Fuel, ammunition & stores: 4 060 tons, 9,5 %
Miscellaneous weights: 0 tons, 0,0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
55 160 lbs / 25 020 Kg = 26,9 x 16,0 " / 406 mm shells or 7,9 torpedoes
Stability (Unstable if below 1.00): 1,06
Metacentric height 6,1 ft / 1,8 m
Roll period: 17,9 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0,84
Seaboat quality (Average = 1.00): 1,13

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak, low quarterdeck
Block coefficient: 0,724
Length to Beam Ratio: 6,23 : 1
'Natural speed' for length: 25,57 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -15,00 degrees
Stern overhang: -4,00 ft / -1,22 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30,00 ft / 9,14 m
- Forecastle (20 %): 27,00 ft / 8,23 m (25,00 ft / 7,62 m aft of break)
- Mid (50 %): 25,00 ft / 7,62 m (18,00 ft / 5,49 m aft of break)
- Quarterdeck (15 %): 17,00 ft / 5,18 m (25,00 ft / 7,62 m before break)
- Stern: 20,00 ft / 6,10 m
- Average freeboard: 23,44 ft / 7,14 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92,1 %
- Above water (accommodation/working, high = better): 167,0 %
Waterplane Area: 56 223 Square feet or 5 223 Square metres
Displacement factor (Displacement / loading): 95 %
Structure weight / hull surface area: 211 lbs/sq ft or 1 028 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 1,52
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent


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titania68
Post subject: Re: Ragnarök class battleshipPosted: May 15th, 2015, 10:23 am
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Joined: June 24th, 2014, 3:22 am
she has very little resemblance to the real USS South Dakota (BB-49) of 19120, but she is still a very good looking ship and doubtlessly powerful.


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Karle94
Post subject: Re: Ragnarök class battleshipPosted: May 15th, 2015, 12:56 pm
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Posts: 2129
Joined: November 8th, 2010, 3:07 pm
Location: Norseland
I have yet to change the template to her proper one.


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titania68
Post subject: Re: Ragnarök class battleshipPosted: May 18th, 2015, 1:02 am
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Joined: June 24th, 2014, 3:22 am
ah, ok.


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AlbertVonSuper
Post subject: Re: Ragnarök class battleshipPosted: May 19th, 2015, 10:08 pm
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Joined: May 16th, 2015, 7:25 pm
Strangely someone made a railgun dread called the Ragnarok in a RP I played.

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