NationStates Jolt Archive

The Civitas Americae Navy is soliciting bids for a helicopter transport ship to transport the Air Force's Tactical Air Attack Divisions. This is a transport only, not a helicopter carrier. Only MT bids will be considered.

Requirements:
Ability to carry at least 90 helicopters (Mil Mi-28).
Ability to proceed under its own power at a reasonable speed.
No well-deck. This is not an amphibious assault ship.

Desirable, but not necessary:
Basic air defense.
Production rights.
Fly off capability for the transported helicopters (ie, once at destination, they can be fueled and crewed aboard the transport and then flown off it).
Nuclear propulsion.

This contract is expected to be for 7-15 ships. The specific number of ships will depend on the capacity and cost of the selected ship.

bumpeth.

To: Civitas Americae Navy

Perhaps you would be interested in the Ocean class Helicopter Assault Ship (http://forums2.jolt.co.uk/showpost.php?p=9616717&postcount=454) designe and destributed by our ally and Kriegzimmer subordinate, Spizania. Because Kriegzimmer itself lacks it' own assault carrier we proudly display this one, although again, it is not our own concept, although the design is largely based around our older ships, and consequently, it's quite an effective design. Nonetheless, we leave the final decision to you without any further prodding.

[signed]Kriegzimmer Board


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[OOC: For your own pleasure.]


The Ocean Class Helicopter Assault Ship

http://img300.imageshack.us/img300/7002/hmsocean3bc.png (http://imageshack.us)

The Ocean class Helicopter Assault and landing ship was the result of Spizania's need for a relatively cheap vessel that could carry one thousand troops and there personal armaments as well as still fight effectively.

Propulsion: The Ocean has nuclear reactor propulsion, using one Valhalla nuclear reactor. The Valhalla nuclear reactor incorporate Baldur meltdown technology. The Baldur meltdown inhibitor uses sensors placed selectively inside the hull, close to the room of the nuclear reactors, to sense internal breaches, either by water pressure, or enemy pressure (missiles and other projectiles). Consequently, in case of a breech the Baldur is able to automatically shut down the Valhalla nuclear reactor as quickly as possible, thus avoiding a catastrophic nuclear reaction. The nuclear reactor can propel the Ocean at over twenty-five knots.

The Valhalla nuclear reactor use three screws to push the Ocean at the velocity wanted. Each screw has five blades, and are of medium size. However, in order to decrease cavitation the Ocean has three MACCAVAB (MACabee CAVitation Absorbing) devices, which absorb the popping noises that bubbles make around the hull and the screws (known as cavitation). This technology was first begun by the United States Navy, but since then enhanced and improved by the Macabee Imperial Naval Engineering Corp under the pay of Valhalla Naval National, the sole naval production provider for the Macabee Navy. This makes the ship much more quiet when under operations, giving it a certain edge over enemy submarines.



Armaments:-

Praetorian V SAM System: The Praetorian V is a massive improvement over the Praetorian IV system, which was basically copied off the Bisonic S-500 SAM system. The Praetorian V should provide better accuracy, as well as better quality, to the consumers of this product. Using a twenty rocket launch system, four rows of five missiles, the Praetorian V SAM system can provide massive fire support in case of massive bomber, or missile raids, allowing the Oceans to put up a quality defense against belligerents, and ensuring survival on the deadly waters. Each Praetorian V missile can be interchanged by another SAM, assuming that the chosen SAM is smaller, or the same size. The Praetorian V is rather small, and uses either a conventional engine to engage sea-skimmers, or a scramjet engine to seek and destroy conventional high flying missiles, or aircraft.

The Praetorian V SAM system incorporates the MLT-1 LIDAR system onboard each Ocean class Battleship, which as a range of about 165 miles (or about 300kms). The MLT-1 LIDAR system uses normal LIDAR, which uses a laser to detect the range of the target, as well as Doppler LIDAR which is used to detect the velocity of the target. DIAL is also used to detect chemical composition of the target. The Praetorian Vs are also hooked up to the MRT-1/N RADAR system used by Macabee Naval vessels. The MRT-1 is based off the TENEX SPY-6 RADAR system, however uses a larger power box, as well as a larger computer network to catch enemy flyers at 700kms. However, the MRT-1 is restricted to altitude of over thirty meters in height (around 100 miles), and for lower altitudes (100 miles to 1,000 miles) is severely restricted in range. The MRT-4 RADAR system is used for sea-skimming missiles, or low flying aircraft. It uses radio waves to track below the minimum range of the MRT-1. The advantages in having two systems do what one could do are that now we have specialization of jobs, and the MRT-4 can focus on one thing, while the MRT-1 focuses on another. To support this massive computer system the CPU uses ln2 coolant to over clock a twenty gigahertz system to thirty gigahertz.

The actual Praetorian V has its own CPU installed on the backside of the missile, above the scramjet engine, and it uses its own MLT-2 LIDAR system, which has a range of two kilometers, and is used for final phase target location purposes. The Praetorian V missile uses the computers to still use the ship based MRT-1, MRT-4 and the MLT-1 systems. This provides a very accurate and effective surface to air missile system. The Praetorian V can be used as an anti-missile, as well as an anti-air SAM.

For SAM purposes each Ocean sports twenty Praetorian V batteries, giving the Ocean the firepower to defend with four hundred SAMs in each volley. The Praetorian V system uses an advanced reload system using hydraulic propulsion to lift the missile out of stock racks and push into the barrel of the Praetorian V launch platforms. Each Ocean class is outfitted with four thousand Praetorian V missiles in stocks, giving each SAM two hundred Praetorian V missiles, useful for ten volleys each SAM.

Main Guns: The Ocean has a forward triple platform 12” rail gun, with a range of about two hundred and fifty miles (ca. 2020 technology). The Ocean has another dual platform 8” rail gun in the rear end of the ship, to provide secondary fire support. However, the Confederacy rarely use this for offensive purposes, instead relying on missiles, which give the Confederacy a greater range

SONARs: The Ocean class Destroyer uses the Poseidon SONAR system, which is capable of detecting louder shipping at up to one hundred kilometers away at the right circumstances, and advanced submarines at a maximum range of ten kilometers, burning through anechoic tiling quite easily. The Poseidon is considered one of the better SONAR systems used presently. The Poseidon is also programmed to detect the “black hole” effect which submarines using MHD have; making it easier to detect MHD propelled submarines.

RADARs: These ships use the MRT-1 RADAR system to detect enemy aerial assets anywhere from 120 kilometers minimum to 700 kilometers maximum; depending on the circumstances, stealth levels, and altitude. The MRT-1 use a very powerful super computer and several screens to detect, filter, and portray enemy aerial assets. Based of the TENEX SPY-6 this well built system is, again, one of the better ones in use around the world.

Additionally, These ships integrate the MRT-4 RADAR system which was built to focus on sea-skimmers. RADAR radio waves are able to catch both missiles and other objects, such as waves, and filter what is a wave, and what is a missile; and quite easily, and through regular technology. Simply, by using a supercomputer and C based program, the computers can detect range, vector, and velocity – hence, it can distinguish what is a missile or aircraft, and what isn’t. A wave doesn’t last at the same altitude, velocity and vector for ever – the wave falls short quite quickly – while a missile lasts in the air for quite a while (of course). Hence, it wasn’t too difficult to design a system capable of picking sea-skimmers up.

Finally, the Ocean class includes an MLT-1 LIDAR system which as a range of about 250 kilometers (165 miles). The MLT-1 uses regular LIDAR to detect range, Doppler LIDAR to detect velocity, and DIAL LIDAR to detect chemical composition.

The Ocean class also has a single of the brand new Conhort Close-in Weapons Systems. The Conhort uses a variant of the GAU-8 Avenger cannon. The GAU-8 itself weighs 281 kg (620 lb), but the complete weapon, with feed system and drum, weighs 4,029 lb (1,830 kg) with a maximum ammunition load. The entire system is 19 ft 10.5 in (5.05 m) long. The magazine can hold 1,350 rounds, although 1,174 is the more normal load-out. Muzzle velocity with armor-piercing incendiary (API) ammunition is 3,250 ft/s (988 m/s), almost the same as the substantially lighter M61 Vulcan.

The Conhort's system consists of an autocannon and an advanced radar which tracks incoming fire, determines its trajectory, then aims the gun and fires in a matter of seconds. The system is fully automatic, needing no human input once activated. The kinetic energy of the 30mm rounds is sufficient to destroy any missile or shell. The system can also be deployed to protect airfields. However, like the Dutch Goalkeeper and the American Phalanx the Conhort is a last-chance weapon, although considerably accurate. It uses a seperate, smaller, LIDAR Gaussian Transmitter and RADAR tranmitter in order to lock on potential targets and blow them out of the air. Several advantages the Cohort has over the Phalanx system are that it is more accurate, it has a greater kenitic energy impact, more tracking, it's reloaded under the deck, and it can operate under three modes: Auto, Semi-Auto and Manual allowing full operator operability.

For underwater defenses the Ocean has a single ASHUM gun, which basically work as underwater close-in weapon systems. The magazines can hold 1,200 rounds and they're reloaded in compartments placed above the guns. The ASHUM guns placed on the Ocean are trained through the ship's SONAR, as well as blue-green Guassian LIDAR transmitters placed for the individual guns.

Aircraft The Ocean class can support upto 25 Lu-25 Black Mariahs and 8 Transport helicopters it is provided with adapted SeaKing IIs but these can be replaced by other helciopters included attack units. These helicopters are used to land the troops in a combat situation adn to carry suplies aboard.

Price: $725 million

Maca I wouldnt mind buy 2 of those carriers. Got a storefront?

While we appreciate the offer, we do already have our own local assault carriers. At this point in time, we merely desire a vessel that can transport the aforementioned large number of helicopters from one secure port to another.

Maca I wouldnt mind buy 2 of those carriers. Got a storefront?

[OOC: Sorry to hijack the thread: http://forums.jolt.co.uk/showthread.php?t=409787]

OCC: Aircraft Carriers make prefect platforms to store attack helicopters and transport helicopters, but not embarked foot soldiers. For example a Nimitz Class Carrier used I think in Grenada or Panama. The 18th Airborne Corps avation replaced the Navy Carrier Air Wings. You can store a shitload of helicopters in the hanger and the landing deck. Make sure they are weatherproof. These are just suggestions.

OOC:
I take it you are looking for soemthing more akin to a large bulk cargo or container ship to be used in much the same way as the UK used the likes of the atlantic conveyer during the falklands (although it was used for harriers). Or possibley that Japanese multirole support ship, or even a Ro-Ro ferry converted to have aircraft elevators, Admittedly on a fairly large scale (nimitz size).

If you can give me to tonight i can log in as my main stream nation (Crookfur) and come up with soemthing.

OOC:
If you can give me to tonight i can log in as my main stream nation (Crookfur) and come up with soemthing.

That's fine.

*bump once more*

one last bump before I simply try and design my own.

Sorry m8 RL has been a little bit, interesting...

Anyway i have a few idea which i could fire your way if you would rather design your own.

I'd prefer not to have to design my own actually, but if you'd prefer to give ideas rather than design one yourself, that's appreciated as well.

OOC: I'm not sure why you'd need a dedicated design for carrying helicopters when an aircraft carrier or an amphibious assault vehicle might be able to do the task. However, considering your requirements including replenishment, I might be able to design something for you as sort of a merge among my current ship classes.

Even though helicopters don't need as much surface area to launch as a CTOL fighter would, the design would likely still resemble either a cross between an aircraft carrier and a large amphibious assault ship.

I'm starting to get ideas though, so if you're interested, I can design one.

All we're looking for is a freighter that carries helicopters rather than cargo containers or such. And while fly-off ability is appreciated, it isn't necessary (if you can just swing off the copters using a crane, that works). The Tactical Air Attack Divisions are designed to come in after the port is secured, so they don't need to attack from ship. We could load them up in transport planes, but given that each division is several hundred attack helicopters, that's a bit too expensive.

I have done some breif calculations and i estimate that you coudl get away with using a RL Ro-Ro transport such as the US Angol class
http://www.hazegray.org/worldnav/usa/images/akr289.jpg
more details here (http://www.hazegray.org/worldnav/usa/aux_seal.htm#roro)

Basically any freighter with about 140,000 square ft or more deck space/cargo room would allow you to transport 90 Mi-28s (providing rotors are foldable, but i assume they are).

If you want something a little more fanciful with elevators from the hold decks to a sort of flight deck or perhaps armoured with the the ability to mount defensive weapons or even with nuclear power then a custom design shouldn't be a problem, but if all those are merely extras then the vast majority of RL Ro-Ro frighters would do.