Shipbucket http://67.205.157.234/forums/ |
|
Treaty Cruiser Design Challenge http://67.205.157.234/forums/viewtopic.php?f=35&t=8375 |
Page 10 of 15 |
Author: | Shigure [ April 23rd, 2018, 5:35 pm ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Sorry, but I'm not extending the due date |
Author: | maomatic [ April 23rd, 2018, 7:10 pm ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Excellent work Tigerhunter & Shigure, very cool designs (and camos)! ---- @ Krakatoa: To be honest, I thought I'd save some considerable weight, when going for the 10-barrel version. (and I thought it looked cooler... ) When I calculated your proposal in springsharp, I found out, that it did not save as much as I hoped. With a few minor tweaks, I was able to easily build a 4x3 variant. Makes me wonder, though, why the proposed 15cm Seydlitz CLs would have had a displacement of around ~15000ts. (other than being excessively overengineered/equipped...) ---- Garlicdesigns' suggested 17cm version made me curious myself, so I decided to draw a "Medium"/Heavy cruiser variant of my Wiesbaden-class. (The camo is based on a scheme worn by either T-22 or T-23 in 1943.) Honestly, I don't really know what to think of it. According to springsharp, I've made a smaller, marginally faster, yet more heavily armored version of the Hipper. The trade-offs, are a weaker main-, DP- and torpedo-armament. Report (wish you could still hide this stuff as "spoiler"): Rostock, Germany Heavy Cruiser laid down 1939 Displacement: 9.638 t light; 9.981 t standard; 11.140 t normal; 12.067 t full load Dimensions: Length overall / water x beam x draught 625,48 ft / 598,92 ft x 62,99 ft x 20,67 ft (normal load) 190,65 m / 182,55 m x 19,20 m x 6,30 m Armament: 8 - 6,81" / 173 mm guns (4x2 guns), 157,98lbs / 71,66kg shells, 1939 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, all raised mounts - superfiring 8 - 4,13" / 105 mm guns (4x2 guns), 35,32lbs / 16,02kg shells, 1930 Model Dual purpose guns in deck mounts on side, all amidships, all raised mounts - superfiring 16 - 1,46" / 37,0 mm guns (8x2 guns), 1,55lbs / 0,70kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts 21 - 0,79" / 20,0 mm guns (9 mounts), 0,24lbs / 0,11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised guns Weight of broadside 1.576 lbs / 715 kg Shells per gun, main battery: 130 6 - 21,0" / 533 mm above water torpedoes Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 4,33" / 110 mm 376,18 ft / 114,66 m 10,33 ft / 3,15 m Ends: 0,79" / 20 mm 220,90 ft / 67,33 m 9,51 ft / 2,90 m 1,84 ft / 0,56 m Unarmoured ends Main Belt covers 97% of normal length Main belt does not fully cover magazines and engineering spaces - Torpedo Bulkhead: 0,79" / 20 mm 376,18 ft / 114,66 m 18,47 ft / 5,63 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 4,72" / 120 mm 2,76" / 70 mm 4,33" / 110 mm 2nd: 0,79" / 20 mm - - - Armour deck: 1,97" / 50 mm, Conning tower: 4,72" / 120 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 3 shafts, 101.254 shp / 75.536 Kw = 32,90 kts Range 6.000nm at 18,00 kts Bunker at max displacement = 2.086 tons Complement: 541 - 704 Cost: £5,157 million / $20,628 million Distribution of weights at normal displacement: Armament: 197 tons, 1,8% Armour: 2.350 tons, 21,1% - Belts: 769 tons, 6,9% - Torpedo bulkhead: 202 tons, 1,8% - Armament: 413 tons, 3,7% - Armour Deck: 915 tons, 8,2% - Conning Tower: 51 tons, 0,5% Machinery: 2.740 tons, 24,6% Hull, fittings & equipment: 4.301 tons, 38,6% Fuel, ammunition & stores: 1.502 tons, 13,5% Miscellaneous weights: 50 tons, 0,4% Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 13.272 lbs / 6.020 Kg = 84,0 x 6,8 " / 173 mm shells or 2,1 torpedoes Stability (Unstable if below 1.00): 1,04 Metacentric height 2,7 ft / 0,8 m Roll period: 16,1 seconds Steadiness - As gun platform (Average = 50 %): 65 % - Recoil effect (Restricted arc if above 1.00): 0,44 Seaboat quality (Average = 1.00): 0,93 Hull form characteristics: Hull has a flush deck Block coefficient: 0,500 Length to Beam Ratio: 9,51 : 1 'Natural speed' for length: 24,47 kts Power going to wave formation at top speed: 58 % Trim (Max stability = 0, Max steadiness = 100): 70 Bow angle (Positive = bow angles forward): 30,80 degrees Stern overhang: 9,84 ft / 3,00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 28,05 ft / 8,55 m - Forecastle (19%): 20,18 ft / 6,15 m - Mid (50%): 18,21 ft / 5,55 m - Quarterdeck (18%): 18,21 ft / 5,55 m - Stern: 19,19 ft / 5,85 m - Average freeboard: 19,57 ft / 5,97 m Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 138,1% - Above water (accommodation/working, high = better): 147,3% Waterplane Area: 25.137 Square feet or 2.335 Square metres Displacement factor (Displacement / loading): 118% Structure weight / hull surface area: 109 lbs/sq ft or 532 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0,98 - Longitudinal: 1,19 - Overall: 1,00 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is excellent Poor seaboat, wet and uncomfortable, reduced performance in heavy weather |
Author: | Krakatoa [ April 23rd, 2018, 8:23 pm ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Nice work Maomatic,the 17cm version looks good, and I like the turret you have drawn for them. |
Author: | reytuerto [ April 23rd, 2018, 10:04 pm ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Good afternoon. Here is my candidate: Displacement: 10,000 metric tons standard; 12.200 metric tons full war load. Dimensions: 182.00 m x 19.00 m x 5.30 m Laid down: 1927, Launched: 1931, Completed: 1933. Armament: (3x3) x7.5/50 inch 250 pounder (112 kgs) x 9 broadside. 200 per gun. (4x2) x 4/45 inch 40pounder, 450 per gun. (6x2) x 40/60 mm twin Bofors model 1928. (3x4) x 21 incher TT with heather. 3 reloads per tube 2 x spotting and recce light seaplane, 1 catapult. Protection: Armoured Belt: 6 inch Armoured deck: 4 inch over vitals, 1 inch parallel armoured deck. Turret face: 6 inch. Turret roof: 5 inch. Barbette: 5 inch, Conning tower: 4 inch. Machinery: Oil fired Thornycroft type boilers, geared steam turbines. 4 shafts, 84,000 shp. 32,00 kts Range 7,000nm at 18.00 kts Complement: 700 |
Author: | Charguizard [ April 24th, 2018, 12:51 am ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
We've had some great entries yet! I'm actually nervous about the outcome now The story for Shig's entry also made me depressed for about 5 minutes. |
Author: | Shigure [ April 28th, 2018, 8:12 am ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Could I please get some volunteers for judges please. |
Author: | Rodondo [ April 29th, 2018, 3:21 am ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Blake Class ITL, the RN caught a lighter break regarding heavy cruisers and were allotted 21 units. Having agreed upon 15 Counties and B-Counties, they considered the construction of 2-6 10,000t Station Flagships to reduce the workload for the few battleships and battlecruisers left and to beef up far areas. In this brief, they designed a 10,000t 12x203mm armed cruiser capable of hounding down commerce raiders, fighting as head of a cruiser division. The design was tight to the limits set down by the WNT. In the end, at commissioning HMS Blake came in at 10592t, some 6% overweight. Ships of the class included Tiger, Blake and Drake. Laid down starting 1929, the ships were slow to complete due to economic factors. HMS Blake was launched in 1934. The colony of Victoria was offered a ship at 85% payment, however due to the depression the VCN instead opted to modernize the three cruisers in it's force, coming in at ~30% of the cost. Depicted here is what a potential Blake Class in VCN service would look like Length: 654ft Beam: 64.5ft Draught: 20.5ft Displacement: 10,592t Standard Armament: 4x3 203mm, 6x1 75mm, 4x 2pdr pompoms & 2x3 533mm torpedo tubes Machinery: 90,000shp, 15 boilers, Performance: 31.6kts Range: 8900nm @12.8kts Armour: 100mm belt, 45mm decks over vitals, 100mm conning tower. I was going to do a 4-view and I did work out most of it but run out of time plus I love to slap that COA on everything |
Author: | Hood [ April 29th, 2018, 10:59 am ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
A late second entry from me. HMS Lancaster, in 1934 The expensive Class A cruisers meant that the Admiralty soon returned to the Class B cruiser to increase numbers. The Lancaster Class were smaller than the previous HMS York and Exeter and displaced less but had similar armament. Ideally suited to scouting they sacrificed some range due to their small size but on completion they had one of the best anti-aircraft fits of any cruiser. Armour was on a par with HMS Exeter with slightly thicker magazine box sides.The design was based on the Leander Class light cruisers and shared a similar compact hull. The design was approved and HMS Lancaster and Edinburgh were laid down in 1931 and HMS Canterbury and Belfast were laid down the following year. They were commissioned in 1934-35. Displacement 7,350 tons (standard) Dimensions Length: 544ft (oa), 538.5ft (wl) Beam: 56ft Draught: 17ft Armament 3x2 8in Mk.II turrets (150 rpg) 4x1 4in QF Mk.V HA mounts (200 rpg) 2x4 2pdr Mk.M pom-pom mounts (1,000 rpg) 2x4 12.7mm machine-gun mounts (1,500 rpg) 2x4 21in torpedo-tube mountings (9 reload torpedoes) 2x Hawker Nimrod reconnaissance aircraft Armour Belt: 3in Magazines: box protection (5in top and 4in sides) Main turrets: 1in Deck: 1.5in Machinery & Performance 72,000shp steam turbines Speed: 32.5kts (standard displacement) Endurance: 5,600nm at 14kts |
Author: | Shigure [ April 29th, 2018, 11:51 am ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Just in time Only a full day left. |
Author: | Blackbuck [ April 29th, 2018, 1:23 pm ] |
Post subject: | Re: Treaty Cruiser Design Challenge |
Neat. I wonder if you could go down the route of the Amphions for the second pair and use unitised machinery. |
Page 10 of 15 | All times are UTC |
Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |