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Blackbuck
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 5th, 2011, 7:56 pm
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Right. So on the 'U' a distance of 23.9m between arrays pretty much distributes the 4.2m x 2.4m panels at either end of the ship and amidships. I can't really get them any further out. In which case is said distance worth the effort of them being built with them to be effective?

On the 'V' I really can't be bothered trying to figure out a solution to the external load carriage. I've yet to see how they intend to do it on the Virginia so I'll leave it for now. Arrays on that are at 23.9m intervals also with 7.6m x 3m panels.

Now how is that, still making you want to hurt me or is it an improvement?

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Blackbuck
Post subject: Updated 'R' Class FFGPosted: September 7th, 2011, 1:39 pm
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Some updates to the 'R' Class FFGs, increased draught, was much too shallow before. Changes to some sensors and weapon fit amongst other things.

BI:
[ img ]

BII:
[ img ]

Displacement: 6,550tonnes normal load 7,050 max load
Length: 140.2m
Beam: 18m
Draught: 5.1m
Propulsion: IFEP: 2x 7.5MW MTU Diesels and 1x 30MW RT30 Gas Turbine
Speed:32 knots (59.2 km/h)
Range:8,000 nautical miles (15,000 km) at 15 knots (27.7 km/h)
Endurance: 50 days
Complement: 105 + 20 air group
Sensors:
  • Indigenous METOC system
  • VHF/UHF antennas distributed around the vessel as well as Ku band SATCOM arrays and 2.4-3.0GHz Microwave Antennas
Surveillance Radar:
Selex Galileo SPN-730 LPI Nav/Surveillance radar, Thales SMART-S Mk2 surveillance/targeting radar
EO/Radar:
Selex Galileo NA-30S combined EO/Radar FCR
Electro-optical:
GEM Elettronica EOSS-300
IFF:
AAE Integrated IFF system
Sonar:
Wolfhart HS-1110 (Bow mounted array - Passive/Active) Wolfhart HS-995 (Keel mounted arrays) AEBC TSA (Towed variable depth) Wolfhart HS-550 collision avoidance sonar. Note that the GP batch only have the collision avoidance sonar fitted.
EW/ESM/ECM and Decoys:
AAE 'hard-kill' launchers (4x), Rheinmetall MASS (4x), AAE wide spectrum jammers (2x) Saab NLWS laser warning system (2x)

Armament:
  • 1x Oto Melara 76mm SR DART
  • 1x 32 cell VLS (MICA-VL EM/IR - MICA and ASROC on the Batch IIs)
  • 4x Dillon M134DT 7.6mm Gatling Guns
  • 2x M3M 12.7mm HMGs (Not shown mounted)
  • 8x KDA Naval Strike Missiles
  • 2x AK-630M1-2 derived CIWS (licence built variant with 27mm x145 Gatling Guns)
  • 2x banks of SVTTs for Mk54 / Mk46 ASW Torpedos
Aircraft Carried:
Up-to 2x (usually 1 carried) MH-212s

Surface Support Carried:
2x 5m Inflatables
2x 9m RIBs

Pipeline upgrades
Batch I vessels are expected to receive a 155mm gun in the next 5 years derived from the land based G6s. There are also trials underway for integration of an MLRS similar to that fitted on the Zion class. These and several other planned upgrades due to be integrated by 2020 are meant to focus the GP vessels more towards supporting amphibious operations and shore bombardment where as the ASW vessels will keep their more specialized role.

---

Regards, Mark.

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Blackbuck
Post subject: 'D' Class Light CruisersPosted: September 7th, 2011, 5:54 pm
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A departure from my modern stuff back to the interwar period... I've been pondering about older ships for some time and somewhere either on the old boards or here I did have a go at it but I gave up to concentrate on the newer stuff but I digress, however I've decided I might as well delve into the older ships too.

-------------

The 'D' class light cruisers were designed and built during the rearmament of Atlantia after the Great War, they were heavily influenced by the British 'C' and 'D' class light cruisers of the period being of a similar size and role. They had a top speed of 31 knots and a range of 10,000km. Complement stood at 330 officers and men.

Armament as built was 6x 6"/45 guns 4x 12pdr AA guns and 6x 2pdr AA guns. The class differed from their British counterparts in not having a torpedo armament.
The armament was reduced by 2 guns to 4x 6"/45 guns in the 1930s to reduce top weight amid concerns of stability with the fitting of new fire control systems.
Daeadalus and Dreadnought saw action against the Scharnhorst and Gneisenau in the English Channel during their famous dash, Daeadalus took 3 direct hits from the heavy cruiser Prince Eugen and had to withdraw, Dreadnought shadowed the ships for several hours before having to withdraw due to a U-Boat sighting.
The class were generally employed on convoy escort duties due to their obsolescence compared to the newer Towns and the more heavily armed but similar vintage 'B' class cruisers.

[ img ]
[ img ]
[ img ]
[ img ]

The class was updated in 1943 receiving 5"/12 guns in place of their 6" guns as well as replacing their 2pdr and 12pdr AA guns with 20mm Oerlikons and 40mm/60 Bofors. Daedalus and Dogstar did not receive this update as they were already being repaired and upgraded at the time of the order being issued due to attrition in the North Atlantic.
Daedalus was sent out in late 1943 with 4x single 5"/38s, 8 single and 6 twin 20mm Oerlikon mounts and 4x single 40mm mounts.
Dreadnought sent out in early 1944 was equipped with 3x 5"/38s in two twin mounts, 4x 40mm/60 in single mounts and 4x in two twin mounts, she had 8 single and 5 twin 20mm mounts.
Driver and Diver became wartime casualties to U-Boat action and mining respectively. The remaining 4 vessels served until the end of the war Dogstar being damaged by a mine in 1945 was stricken off charge and broken up soon afterwards. The remaining 3 vessels served into the early 50s to see action in Korea before being struck and scrapped.

-------------

ORBAT of the as then Royal Atlantian Navy follows.


ORBAT June 1940:

Aircraft Carriers:

HMAtS Poseidon (1929)
HMAtS Artemis (1938)

Battleships:

HMAtS Wessex (1920)
HMAtS Mercia (1925)

HMAtS Cambria (1933)
HMAtS Siluria (1935)

Battlecruisers:

HMAtS Heracles (1922)

Heavy Cruisers:

HMAtS Samson (1929)

HMAtS Addax (1930)
HMAtS Blackbuck (1933)
HMAtS Oryx (1936)

Light Cruisers:

'D' Class

HMAtS Dreadnought (1923)
HMAtS Daedalus (1923)
HMAtS Devestation (1924)
HMAtS Driver (1926)
HMAtS Diver (1927)
HMAtS Dogstar (1927)

'B' Class

HMAtS Black Rock (1924)
HMAtS Black Eagle (1924)
HMAtS Black Dog (1926)
HMAtS Buzzard (1926)
HMAtS Borderer (1928)
HMAtS Bouncer (1929)

Town Class

HMAtS Lilihelm (1927)
HMAtS Dunkirk (1929)
HMAtS Minehead (1931)
HMAtS Eriea (1933)
HMAtS Goose Bay (1934)
HMAtS Blue Ridge (1934)

Destroyers:

D1 Class

D300 (1927)
D301 (1927)
D302 (1927)
D303 (1928)
D304 (1928)
D305 (1928)

D2 Class

D350 (1930)
D351 (1930)
D352 (1931)
D353 (1931)
D354 (1931)
D355 (1932)
D356 (1932)
D357 (1932)
D358 (1933)
D359 (1933)

E1 Class

E400 (1935)
E401 (1935)
E402 (1935)
E403 (1936)
E404 (1936)
E405 (1936)
E406 (1936)
E407 (1937)

Submarines, frigates and auxiliaries yet to be worked out.

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Last edited by Blackbuck on September 7th, 2011, 9:49 pm, edited 5 times in total.

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Thiel
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 7th, 2011, 6:18 pm
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The Bofors 40mm/L70 was a post-war development, first available in 48 if memory serves.
The gun you're looking for is the L60 from 1936.

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Blackbuck
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 7th, 2011, 6:21 pm
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Indeed, a typo on on my behalf.

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Ashley
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 8th, 2011, 9:11 am
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No torps on your cruisers?

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Blackbuck
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 8th, 2011, 9:24 am
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Not this class. The admiralty at the time deemed them unnecessary for the class. That said all of the towns and heavy cruisers have/will have a torpedo armament.

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Blackbuck
Post subject: Town Class Light CruiserPosted: September 8th, 2011, 5:55 pm
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Not to be confused with the Royal Navy 'Towns'. These supplanted the 'A' class cruisers of WW1 origin as the leading light cruisers of the Atlantian Navy.

[ img ]

Built between 1925 and 1933 (commissioned between 1927 and 1934) the 'Town' class compared to the 'B' and 'D' class cruisers in service at the time represented a leap forward in capability. Their main armament was two fold that of the 'D' class and as such their usage during the second world war differed greatly.
Shown is the class was in June 1942. They at this time were armed with 8x 6"/45 guns in dual mountings, 8x 4"/45 DP guns in dual mountings 4x 40mm/60 AA guns on 'boffin' mountings distributed along the hull and 10x 20mm Oerlikon cannon. The class also differs from the 'A' class they replace in once again having a torpedo armament of 8 21" tubes amidships in two quadruple mountings. They were originally intended to operate a scout aicraft (hence the crane) but this never came to fruition, the aircraft being developed at the time had it's development cancelled.
They served throughout the second world war. Dunkirk was damaged by a mine off the coast of Ireland and was out of action from May 1941 to March 1943. Eriea and Lilihelm both saw action in the Med' escorting convoys to Malta and Gibraltar.
They remained for the most part unaltered during the war except for receiving newer radar and communications systems in mid 1944.
The class survived as a whole into the early 1950s when Dunkirk and Lilihelm were struck due to differences between the rest of the class in their propulsion and compartmentalization. The remaining vessels served in the Korean war and HMAtS Eriea served until 1965 as a trials ship.

---

I've literally been working on this from 8pm last night to about midnight then 10am until about 6pm today. Ergo, I hope there isn't anything drastically wrong with the design or I may actually cry.

Regards, Mark.

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SrGopher
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 8th, 2011, 9:59 pm
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I think the only problem so far is that the Boffins were designed a little later than 1942, but I guess you could get by with that.

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Blackbuck
Post subject: Re: Parliamentary Republic of AtlantiaPosted: September 8th, 2011, 10:23 pm
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All I could find was "mid forties" Though that said, it's easy enough to remedy.

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