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Colosseum
Post subject: Re: Fast battleship challenge!Posted: May 7th, 2018, 5:48 pm
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I asked for one entry per person so contestants could best focus on perfecting one single design. I also noticed in the last contest that the upper tiers were stacked with entries from the same few artists, and it meant the newcomers had no chance of getting into the top 5 or top 10.

I am not personally interested in the SpringSharp debate and it actually bothers me that this thread has 30 posts without a single drawing entry. I would advise you all to just focus on creating your entry, following the posted rules, and not to worry about adding a SpringSharp report. As Gollevainen and MihoshiK have stated, this forum is not focused on SpringSharp reports (good or bad), but rather on drawings. Thanks in advance for your understanding.

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Deskjetser
Post subject: Re: Fast battleship challenge!Posted: May 7th, 2018, 9:08 pm
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Updated the bottom of the OP with removal of SS recommendation and replaced with required stats.

Happy drawing! :D

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Krakatoa
Post subject: Re: Fast battleship challenge!Posted: May 7th, 2018, 10:17 pm
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Where is Russia/USSR?

They may not have built anything during this period, but they were certainly capable of doing so. They would have had the same 35,000/16" limits as everyone else. This would give another outlet for some original thinking and different types of ships/drawings to be produced. Even Gollevainen might be induced to participate. He has done some very good Russian flavoured battleship drawings for his AU's.


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Deskjetser
Post subject: Re: Fast battleship challenge!Posted: May 7th, 2018, 10:29 pm
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The limits only apply to nations that either signed the treaties, or obeyed(ish) them despite not signing (Germany). Russia for example is listed as no restrictions under the challenge rules.
Quote:
  • Ships of all other national origin:
    • Exempt from all restrictions
Russia had laid down the Sovetsky Soyuz, which was a 60,000t battleship, in 1938; This was before the treaties effectively expired with the outbreak of WW2.

Just to be clear, if there was historical precedent for something you'd like to do, you can do it!

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BB1987
Post subject: Re: Fast battleship challenge!Posted: May 8th, 2018, 11:06 am
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I support the choice of a single design, more so because I'm no less guilty of ill thought and malice on the matter.
Before going deep into reading the 'only one entry' requirements I had thought about just landing here my Yashima class, out of curiosity on how it would be rated in one of our contests (to check ratings and comments as a way to improve and see some more in-depth critiques, but it would have still been a cheap entry), and then -if I had the chance or will- do another ship before the deadline.
Yet, reading the requirements first and Colo's motivations later made me thinkering about it a bit, so I ultimately changed my mind and decided to try something else. What about a Japanese or Kokoan ship faithfully adhering to the pre-escalator LNT limitations (the heresy! :lol: ). Sounds more fun isn't it?

Good job, and good luck everybody. hope this will be successful as the treaty cruiser contest. :D

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pepembr_mb
Post subject: Re: Fast battleship challenge!Posted: May 10th, 2018, 6:33 pm
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Tamandaré was born after the Brazilian naval attacher in Paris was alerted, in 1932, by Marine Nationale officers that two Imperatritsa Mariya Russian Battleships interned in Toulon were to be scrapped. They remembered the Brazilian officer the excelent performance of Russian guns. With some modernization, the turrets could fit a new battlecruiser. The Ministério da Marinha bought the hulks from France and open a bid to built two new hulls to be named as T-1, Tamandaré, and T-2, Barroso. The idea was something able to fight raiders in an eventual new European conflict. The Brazilian President, Getúlio Vargas, pay part of the bargain with the French governement with coffee and cotton. The bid was won by Armstrong Whitworth & Co Ltd and the two Russian hulks were sent to Britain to be dismounted. The 130 mm guns were removed and sent to Brazil (the idea was use them in railway mounts for coastal defence). The original design was prepared with 4.5 in. secondary guns, but the American Naval Comission at Rio de Janeiro proposed a new 5 in. antiaircraft double mount. The British builders reserved the space for the American guns and, after the simultaneous launching of both ships, at 11th June in 1935, the Brazilian Navy Day, and the machine trials they crossed the Atlantic to receive their secondary guns. They arrived at Rio de Janeiro in January 1st 1936 and served until 1974.

[ img ]

This is SpringSharp prevision:

Tamandaré, Brazil Battlecruiser laid down 1935

Displacement:
22,932 t light; 24,292 t standard; 30,014 t normal; 34,591 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(666.08 ft / 656.17 ft) x 85.30 ft x (27.89 / 31.55 ft)
(203.02 m / 200.00 m) x 26.00 m x (8.50 / 9.62 m)

Armament:
9 - 12" / 305 mm 52 cal guns – 924.41lbs / 419.31kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1935 Model
2 x Triple mounts on centreline ends, majority forward
1 raised mount - superfiring
1 x 2 row sextuple mount on centreline ends, evenly spread
1 hull mount in lower deck- Limited use in all but light seas
8 – 5.00" / 127 mm 38 cal guns – 59.33lbs / 26.91kg shells, 250 per gun
Breech loading guns in deck mounts, 1935 Model
4 x Twin mounts on sides, evenly spread
4 raised mounts
26 – 0.79" / 20.0 mm 99 cal guns – 0.25lbs / 0.11kg shells, 150 per gun
Breech loading guns in deck mounts, 1935 Model
26 x Single mounts on sides amidships
Weight of broadside 8,801 lbs / 3,992 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.84" / 250 mm 469.16 ft / 143.00 m 22.97 ft / 7.00 m
Ends: Unarmoured
Main Belt covers 110% of normal length

- Torpedo Bulkhead:
5.91" / 150 mm 469,16 ft / 143.00 m 27.89 ft / 8.50 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.84" / 250 mm - 9.84" / 250 mm

- Armoured deck - multiple decks: 1.97" / 50 mm For and Aft decks
Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm

- Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 180,222 shp / 134,446 Kw = 32.00 kts
Range 12,000nm at 20.00 kts
Bunker at max displacement = 10,299 tons

Complement:
1,139 – 1,482

Cost:
£12.405 million / $49.620 million

Distribution of weights at normal displacement:
Armament: 1,892 tons, 6.3%
Armour: 9,862 tons, 32.9%
- Belts: 4,461 tons, 14.9%
- Torpedo bulkhead: 2,859 tons, 9.5%
- Armament: 731 tons, 2.4%
- Armour Deck: 1,606 tons, 5.4%
- Conning Tower: 205 tons, 0.7%
Machinery: 5,120 tons, 17.1%
Hull, fittings & equipment: 6,058 tons, 20.2%
Fuel, ammunition & stores: 7,082 tons, 23.6%
Miscellaneous weights: 0 tons, 0.0%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
32.312 lbs / 14.657 Kg = 37,3 x 12,0 " / 305 mm shells or 5,4 torpedoes
Stability (Unstable if below 1.00): 1,41
Metacentric height 7,2 ft / 2,2 m
Roll period: 13,4 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0,35
Seaboat quality (Average = 1.00): 0,91

Hull form characteristics:
Hull has low quarterdeck ,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0,673 / 0,686
Length to Beam Ratio: 7,69 : 1
'Natural speed' for length: 25,62 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20,00%, 27,23 ft / 8,30 m, 22,97 ft / 7,00 m
- Forward deck: 30,00%, 22,97 ft / 7,00 m, 22,97 ft / 7,00 m
- Aft deck: 25,00%, 22,97 ft / 7,00 m, 22,97 ft / 7,00 m
- Quarter deck: 25,00%, 16,40 ft / 5,00 m, 16,40 ft / 5,00 m
- Average freeboard: 21,67 ft / 6,60 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109,8%
- Above water (accommodation/working, high = better): 168,2%
Waterplane Area: 43.787 Square feet or 4.068 Square metres
Displacement factor (Displacement / loading): 104%
Structure weight / hull surface area: 109 lbs/sq ft or 532 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,75
- Longitudinal: 1,06
- Overall: 0,78
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather


Last edited by pepembr_mb on May 12th, 2018, 12:59 am, edited 2 times in total.

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Krakatoa
Post subject: Re: Fast battleship challenge!Posted: May 11th, 2018, 10:01 am
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Lend Lease.

France during the period 1940-1943, lost a lot of its Navy to events, some it could control and some it could not. The original main Naval base for the French fleet to be based at, after the fall of France, was Mers-el-Kebirr. The actions of the British Fleet in 1940 forced all of the French ships out of that port and back to Toulon. The Richelieu and Jean Bart remained in their West African ports and were kept an eye on by passing British ships and aircraft. The accidental loss of the Jean Bart during the Torch landings then the calamity at Toulon where 77 French major warships were scuttled, decimated the French Fleet.

The only modern capital ship left was the Richelieu, the other battleships were the obsolete 1910-1913 Ocean and Lorraine class vessels and the aircraft carrier Bearn. The uncompleted hull of the Clemenceau was bombed and sunk by the US Air Force.

The French Navy applied for assistance under the Lend-Lease Agreement to acquire a battleship from the United States to a design featuring US hull and superstructure with French designed weapons, radar, aircraft handling facilities. A lot of this was recovered from the sunken hull of the Jean Bart (raised during 1944). The 16" were the design raised for those weapons that could have been placed aboard the Alsace class in triple turrets. The 130mm/5.1" were the same turret but up to the mark 5 gun that finally cured the teething problems with that dual purpose weapon system. The 40mm were the Bofors gun in the latest French quad and single mountings. French gun directors and radar systems were placed aboard.

[ img ]

Displacement: 50,000 tons standard, 62,000 tons full load,
Dimensions: 869 x 116 x 31
Machinery: 4 shaft, Geared Turbines, 180,000shp
Speed: 30 knots
Endurance: 12,000 miles at 18 knots
Armour: 16" belt, 7" deck, 16/9/6" turrets
Armament:
9 x 16" (3x3)
20 x 5.1" (10x2)
56 x 40mm (12x4, 8x1)
Aircraft: 3
Crew: 2750


The various American Authorities, that would be involved in producing a Lend Lease Battleship for France, met and decided to make an offer of their own to the French that would, 1). produce a ship faster, 2). use up spare parts already available and thus put no extra pressure on the US large gun manufacturing plants.

Many triple 14" turrets were available, to be used for the main armament of a new ship, from the Pearl Harbour disaster. Four of those could be cleaned up and placed aboard. The USS Kentucky was already under scrutiny as to whether the ship should be proceeded with or its contract cancelled. Its contract could be replaced with the Lend Lease ship for France. The only sticking point would be the 14" guns being used in place of the 16" the French wanted. However the US could point to the Royal Navy's King George V class which had proved the 14" gun on them were a match for ships like the German Bismarck, and none of France's possible enemies would have ships with any better armaments.

The 16" ship would not have been completed till August/September 1945, while the 14" vessel could have been completed as early as November 1944.

[ img ]


Displacement: 46,000 tons std 56,900 tons full load
Length: 852 ft
Breadth: 110 ft
Draught: 32 ft
Machinery: 4 shaft steam turbines 180,000shp
Speed: 32 knots
Range: 9000 miles at 15 knots (3,250 nm at 26 knots)
Armour: 14" side, 7" deck, 12/9/7" turrets
Armament:
12 x 14" (4x3)
24 x 5.1" (6x4)
80 x 40mm (20x4)
24 x 25mm (24x1)
Aircraft: 4
Complement: 2400


Last edited by Krakatoa on May 15th, 2018, 10:52 am, edited 3 times in total.

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Keisser
Post subject: Re: Fast battleship challenge!Posted: May 11th, 2018, 2:32 pm
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[ img ]
============================================
The Dukes of Tavington were designed shortly before outbreak of another World War. World tension escalated quickly as horrors of war faded in the memory of humanity. Recent chain of events of territorial dispute between Kingdom's ally Salvinia and Republic of Fandalgo about Niklossian islands mean that war is probably much more closer to coasts of Garlow than His Majesty would expect.
War against Republic of Fandalgo and its allies - Norland and State of Galissonia - meant that naval battles are gonna be fought at waters of Loud Ocean, close to the naval bases of Kingdom. Navy leaders came to the conclusion that it is possible to step off from a doctrine of fast long-range battleships and battlecruisers and start the work on somewhat slower, but much better balanced designs. Battlecruiser designing was stopped and completely eradicated for next ten years.
Admiralty formed a specification for a "Medium range First class battleship". According to it, a new vessel should have a normal displacement not more then 55 000 tons, be capable of 28 knots and well protected from its own guns. One of the additional orders for Royal Design Bureau was a request to prepare projects with 15"/50 Mark VII, 16"/50 Mark IV, 17"/48 Mark I and 18"/45 Mark II guns with all possible gun arrangements, analyze them and select the best perspective design for construction.
Design bureau made a lot of work in a short time. Soon after the beginning of prelininary designing stage, 15 inch guns were recognized as insufficient for modern naval warfare and work on ships with them was ceased. Next gun to leave the "competition" was 18 inch Mark II. Despite her wonderful ballistics and tremendous penetration, it was impossible to put more then 8 guns in that displacement without seriously sacrificing both speed and armor. Designs 18/C6 and 18/D8 (first number indicates gun caliber in inches, letter - number of turrets, and last number - total amount of guns) were tactically underperforming according to war games and their development stopped. However, Admiralty didnt want to fully refuse from using 18 inch guns - they ordered Design bureau to create a study named 18/C9 and raised displacement limit to 60 000 tons exclusively for her.
The most debateful thing during the design process after eradication of 15" guns and retaining of only one single design with 18" guns was a controversy between 16" and 17" guns. They were close to each other in their performance and 17" gun wasn't much better than 16" one. At last, after more then one year of development Design bureau finished this stage of their work. Admiralty got five designs to select: 16/C9, 16/D12, 17/C9, 17/D10 and 18/C9. Last one was considered as too expensive and got an immediate "no" just like 16/C9 (as "unsatisfactory"). 17/D10 was pretty close to be selected, but her unusual arrangement - twins over triples - would delay the construction process because of need to create two new gun turrets. At the same time, triple 16" gun mounts were already used by some His Majesty's warships - this was the main reason for adoption of design study 16/D12.
Royal Navy ordered four of them to Bruce&Partington Ltd that was a reliable provider of new fighting machines for more than 20 years already (and, well, both Jonathan Milford Bruce and Richard Partington were very influential persons in kings court). Shortly after launching, the design was reworked to fit electric drive instead of geared one - a thing that was never yet used on Royal Navy's warships. This was ordered by sir Partington after start of a succesful cooperation with Somersham Norhtern Electric Company. During construction process, the design itself got some changes - AA battery was gradually reinforced and the armor scheme was revised. As a result, it grew up a bit, getting additional 3 000 tons of displacement.
First two ships of that class were named after noble titles of Kingdom of United Provinces - Duchy of Tavington and Duchy of Rathburne. Two other ships got their names after leaders of former sovereign states on the modern-day territory of Garlow - Republic of Timberland and Peasants Republic of Dirtmarsh.
============================================
[ img ]
[ img ]
============================================
Normal displacement: 58 409 tons
Measures: 271,1 m (275,8 m) x 36 m x 9,4 m
Main battery: twelve 16"/50 Mark IV guns
Secondary battery: 8 twin dual purpose 133 mm guns, 16 mounts of octuple 40 mm guns
Armor: 374 mm main belt and turrets front, 35...134 mm decks, up to 134 mm ends and upper belt among with turrets top, 317.5 mm barbettes, 406 mm conning towers, bulkheads up to 60 mm in total
Propulsion: four Bruce&Partington turbines, 12 Admiralty boilers = 130 000 ihp in total (149 500 ihp on trials)
Speed: up to 28,29 kts (29,38 kts on trials)
Range: 7500 nm at 16 kts
EDIT Technology levels: laid down 1938, launched 1940, completed 1941

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«A sea is not a barrier, a sea is a road, and those who try to use the sea as an instrument of isolation soon realize their foe has already put the sea into his own service.». - Alfred Thayer Mahan.


Last edited by Keisser on May 12th, 2018, 12:32 am, edited 1 time in total.

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heuhen
Post subject: Re: Fast battleship challenge!Posted: May 11th, 2018, 5:10 pm
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Krakatoa
Post subject: Re: Fast battleship challenge!Posted: May 11th, 2018, 9:58 pm
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Only thing that seems to be missing, Keisser, is some dates? Laid down, completed?


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