NationStates Jolt Archive

NEW Stuart-class Guided Missile Frigate!

26-05-2007, 00:34
The Stewart class Guided Missile Frigates came out of the need for additional escorts for the proposed expanded Roman fleet in the mid Twenty-Sixties. In addition, the older Anzac frigates were at the end of the operational lives and required replacement. Several design requirements were set by the admiralty including high speed (excess of 38 knots), 64 cell (minimum) VLS missile system, twin VTOL/Helicopter hanger, and superior anti-submarine warfare capability. After careful study, it was decided that a trimeran hull would provide the most stable platform and had room for operational growth through its life.

The Stewart is a sleek trimeran, with her two secondary hulls set about halfway her main hull. The ship was designed with advanced stealth techniques from the start to reduce her radar signature. Her deckhouse was a single massive block, upon which a sleek radar tower was set. Behind the deckhouse there was a large flightdeck, very suitable for two large helicopters or VTOLs. At the rear of the ship there was a deck for a large towed passive sonar array.

The ship was powered from the outset by nuclear gas turbines and indirect electric propulsion. A pair of fusion reactors were incorporated into the design to provide more than enough power for the ship. The powerful reactors gave the Stewart a top speed of 58 knots. The reactors also gave the frigates virtually unlimited range and endurance. The propellers were variable pitch and make the ship very maneuverable and able to go from full speed to full reverse very quickly. As with all the new vessels of the Roman navy, the hull was built from super-strong, anti-corrosive materials that made the ship all but immune to weather conditions and salt water. The hull was also designed with the most advanced stealth technology of the day and drastically reduced the radar signature of the frigate.

The RNEC Phased Array Radar was thought to provide more than enough surveillance for the Stewart class. The Type 2050 hull sonar and Type 2031 towed-array sonar were fitted for anti-submarine warfare. The Stewart class is fully fitted with radar-jamming and ECM suites to defend them against hostile missiles and aircraft.

Designed for general escort and anti-submarine warfare, the Stewart class was a very stable weapons platform and housed excellent munitions capability for a vessel of her size. The main weapon system began as an Roman built 96 cell Mk 59 VLS launcher. Very soon in the design phase it was realized that the launcher would be too large for the hull of the vessel. Various sized launchers were debated back and forth until a 48-cell launcher was decided upon. To increase the capacity, a pair of Thor class medium range missile launchers were mounted in the superstructure (one over each secondary hull). The launchers were much less expensive than the Mk 59 launchers and were mounted as a cost saving measure. Usually the majority of missiles were anti-submarine assisted rockets or cruise missiles, but medium-range and long-range missiles were carried as well. There was major discussion as to the gun armament of the frigate with consideration being given to a variety of calibers and models. After much debate, the RNEC Mk 45 five inch cannon was decided upon for the simple reasons that they were available, cheap, and ammunition available for them. The turrets were redesigned with a stealthier profile and to take advantaged of extended range guided munitions. A single turret is mounted at the bow of the ship in front of the VLS launcher. A pair of MK 44 "Sea Sabre" combination defense mounts were fitted for close-in defense with one mounted above the bridge and the second above the aircraft hanger. Two torpedo tubes were mounted on either side of the hull for close-in submarine threats.

The hanger space on the frigate was quite spacious and easily housed the two large Blackhawk helicopters originally assigned to them. These craft were later replaced with a pair of Roman built REC-1 VTOLs (, although not all of the Blackhawks had been replaced before the Post-Modern era came. In addition, a small unit of marines can be stationed aboard for defense against boarders and for port security.

Class: Stewart-class
Vessel Type: Ocean, Guided Missile Frigate
Crew: 115; 9 officers, 17 Chief Petty Officers, 89 enlisted (Has a high degree of automation)
Troops: 12 Helicopter or VTOL pilots and crew
Airborne Compliments: 2 Blackhawk Helicopters or 1 REC-1 Sabertooth VTOLs (
Speed: 58 knots (66.7 mph / 107.4 kph)
Range: Unlimited due to nuclear turbines. Ship carries six months of supplies and consumables on board.
Length: 485 feet (145.5 meters)
Height: 47 ft (14.1 meters)
Width: 85 feet (25.5 meters)
Displacement: 5,400 tons standard and 7,200 tons fully loaded
Cargo: 500 tons of nonessential equipment and supplies. Each enlisted crew member has a small locker for personal items and uniforms. Ships officers have more space for personal items. Most of the ships spaces are taken up by extra ammo, armor, troops, weapons, and engines.
Power System: Nuclear Turbines, average life span is 20 years
Weapon Systems:
One (1) Mk 45 Mod 4 Single Barrel Five Inch (127 mm) / 62 Naval Gun: The ship mounts a single five inch gun on the bow of the ship. The gun is very reliable although it fires at a relatively slow rate (20 rounds per minute). The gun was carried on many ship classes until well into the twenty first century. The guns can be used against other ships, against ground targets, and against aircraft. The weapon can use special artillery rounds, rocket assisted rounds, and can even fire Extended Range Guided Munitions. Maximum Effective Range: 20 miles (17.4 nautical miles/32.2 km) Rate of Fire: Five shots per minute. Payload: 500 rounds Two (2) Mk 44 "Sea Sabre" Combination Anti-Missile Defense Systems: One system is in the rear of the superstructure just before the helicopter hanger and the other is on the front of the superstructure just above the bridge. This anti-missile defense system combines both a rapid fire rail gun and a short range missile launcher. While mounted in one system, both defense systems have separate tracking systems. The short range missile launchers can target up four targets and can fire a volley up to twice every minute. The rail gun is capable of destroying any missile or inflicting serious damage on aircraft. The rail gun can fire on automatic at up to six targets per minute. The system also can be used against other ships and ground targets. The system has a 360 degree rotation and can elevate up to 90 degrees to fire at targets directly overhead. Maximum Effective Range: 11,000 feet (2 miles / 3.2 km) Rate of Fire: Rail Guns - 6,000 per minute. Short Range Missiles - can fire one at a time or in volleys of two or four per minute.
Payload: Rail Guns - 8000 rounds (200 burst) each. Short Range Missiles - 16 short range missiles each. MK 59 Vertical Launch Missile Launcher (1): Launching cells are located forward behind the 127 mm gun mount. The system is similar to the vertical launch system employed on many ships in the late twentieth century to launch the SM-2 series missile but since the missiles are smaller they have a reload system that reloads from under the launcher and can reload within 15 seconds. The launcher has a total of 48 individual cells and is eight missile cells longs by six cells wide. The launcher can fire up to half its total payload in one minute. The launcher can use a vast variety of missiles including surface skimming missiles and rocket propelled torpedoes. Each cell can carry one long range missile or two medium range missile. The reload for the cell must carry the same load as the main cell. Long range missiles are normally used against large targets and aircraft further out where the medium range missiles will normally be used to engage closer targets. About half of all long range missiles carried are fusion warheads and most missiles are normally smart missiles. Maximum Effective Range: Depends on the ammunition being used. Payload: 48 missile cells in launcher with reload systems for each cell (1 reload each cell). One long range missile or two medium range missiles may be carried per cell but reload must be the same load out as well. The ship will often carry 16 cells with two medium range missiles each and the other cells loaded with one long range missile each. Two (2) Torpedo Launchers: There is one launcher on each side of the ship near the fantail. Each torpedo launcher has 3 torpedo tubes and tubes are 12.75 in (324 mm) wide. Torpedoes are normally used against submarines but can be targeted on surface targets as well. Ship carries 60 reloads for torpedoes.
Maximum Effective Range: 20 miles (32 km)
Rate of Fire: One at a time or in volleys of 2, or 3 per side, Reloading takes 1 full minute
Payload: Three torpedoes each launcher for a grand total of six torpedoes (Has 60 torpedoes for reloads) Super RBOC Chaff Launcher (4): Located on the superstructure of the ship, they are designed to confuse incoming missiles. In addition to chaff these launchers also fired flares to decoy IR guided missiles.
Special Features:
RNEC Systems Phased Array Radar System (This system is carried on most of the Stewart class): Powerful and flexible radar system that is comprised of a single array on top of the main mast. A powerful computer controls it. If allowed by the horizon, the system can track out to 175 nautical miles (201.4 miles / 324.1 km) and can simultaneously track and identify up to 480 targets at one time. The system controls missiles launched from the VLS launchers and the system tracks and guides each individual missile to a individual target for up to 120 targets. If a target is eliminated, missiles are automatically guided to a new target. The system can also control missiles launched from other linked vessels as well and can also act as fire control for gun mounts.
SPX-1A Phased Array Radar System: Unlike systems carried by most larger naval vessels, the radar system is comprised of a single array on top of the main mast. This system is smaller, lighter, and requires less power than a system of fixed panels. If allowed by the horizon, the system can track out to 400 miles (644 km) and can simultaneously track and identify up to 576 targets at one time. The system controls missile launched from the long range missile launchers and the system can track and guide each individual missile to an individual target for up to 144 targets. If a target is eliminated, missiles are automatically guided to a new target. The system can also control missiles launched from other linked vessels as well and can also act as fire control for gun mounts.
RNEC-2050 sonar: Mounted under the bow of the ship. Sonar system has a range of around 24 nautical miles (27.6 miles / 44.6 km). This hull sonar system has both a passive and active system built in. Sonar system can track up to 32 targets at one time.
RNEC-2031 Towed Array Sonar System: The system is basically a long and very sensitive sonar system carried behind the ship on a long cable. Range of 103.6 miles (90 nautical miles / 166.8 km). This towed array sonar system has both a passive and active system built in. Sonar system can track up to 32 targets at one time.
Sonar Masking System: The hull is designed to minimize noise from the hull and uses water bubbles to form a barrier against sonar as well.
Radar Defeating Profile: The ship superstructure is designed so that the radar profile of the ship is reduced. Combination Radar Detectors and Active Jamming System: Combination of radar detection system (ESM) and an active jamming system. The system can detect another radar system at 125% of the range of the transmitting radar.
Market Cost: $1.2 billion
26-05-2007, 00:44
You spelled the name different. "Stuart" vs "Stewart"
26-05-2007, 00:49
OOC: lol yea i guess i did...thanks for pointing that out :)
IC: Well anyways, what do you all think? Any opinions? Questions?
26-05-2007, 01:03

We would like to Purchase 8 Vessel and Additional 8 each year for 5 years for a Price Set by you