ATEF SDB

BARD PAPER: SARA0034

ATEF System Defense Boat

This is the final design iteration of the Aurora-Trybec-Eos-Fija Common System Defence Boat (ATEF-SDB). This design study was started on 11/III/1201, in response to the greater threat from the wilds perceived upon the loss of the 12 Traders. Whilst information received on the follow-up missions downgraded the threat, it was decided to press ahead with the program, in order to free up Jump-capable warships from the systems planetary navies for recovery missions. With these missions being supported by freelance and RC help, more manpower could be freed up to man the ATEFs. In addition, as the vessels are largely TL-10 and 11, with a large TL-9 Fusion Plant, in-system support is more economical, and thus more ships can be put in service than would otherwise be the case.

The go-ahead to manufacture the first two vessels in the series was given on 01/IX/1201, though it seemed that they would be the only vessels in the series to be manufactured, as political opinion on the member worlds of the ATEF-SDB consortium saw the external threat to their worlds as minimal. The Vampire attack on Nike Nimbus on 18/IV/1202 changed that opinion. The order for a complete production run was signed on 10/V/1202. The order is broken down for the individual worlds as follows :

Aurora:	7 (+1)
Trybec:	6
Eos:	6
Fija:	8
Total:	28

ATEF

The ship is of ovoid form, the armoured hull displacing 400 dT. It matches the 4G acceleration typical of the Shukugan SDB, with slightly less duration. The problem of g-compensation, which the Auroran compensator can only negate 2Gs of is dealt with by orienting the decks vertically with respect to the thrust vector. When at action stations, the g-forces experienced by the crew are well within standard tolerances. The ship has a good sensor suite, and countermeasures, including decoys. Weaponry consists of a 25 dT missile bay, which combined with the mfds is capable of salvoing 8 missiles rapidly at a foe, from a stock of 27. All these missiles are in ready-use cradles, meaning there is minimal loading time- vital in a heavy combat. The bay is located near the base of the ship, to ease re-supply on the surface. The secondary laser barbettes are located on the centreline, and have a good power rating and rate of fire. At right angles to these are the rapid-fire defence lasers, which are fired from their own dedicated mfds, these are an acceptable offensive weapon at close ranges. The mfds can also control the Barbettes, if the main directors are engaged with missile firing. Sand turrets fill out the defensive weaponry, one aft and the other forward, on opposite sides of the hull. At a cost of just over 309.9 MCr, this ship delivers at least twice the effectiveness of relic designs, for less than twice the price.

Nike Nimbus seems certain to be a future client, and her proximity to Eos should prove helpful in supporting the vessels. One program associated with the ATEFis the ATEF-SBS (Scout Base Support), which would make maintenance easier at RC Scout Bases. This would enable Nike Nimbus, Baldur and Lancer to operate the ATEFwith ease. Another associated programme is the ATEF-SILTS (Support Infrastructure in Lower Technology Systems). This involves modular maintenance facilities that would enable the ATEFto be easily supported in Systems of Tech Levels 7-9. Lucifer is the only likely customer within the RC, but Teldora, Xezor and other possible RC allies in the wilds are likely external customers. Officials suggest that future clients could purchase up to 50 units.

There are two production lines for the ATEF, one at Aurora Ship Building and Design, the other at Dawn Construction, Trybec. Eos and Fija provide components, mainly the tech 9 fusion plant, and also fit-out their own vessels. The only externally supplied equipment in these vessels are the sensors, MFDs and decoys, purchased from Aubaine.

With the first prototype set to make it's maiden run in little over a month, the safety of the Spinward Face of the Coalition will soon be assured, freeing up manpower and vessels to ensure our community grows, and survives.

ATEF System Defense Boat

General Data

Displacement: 400 tons	Hull Armor: 101
Length: 22.03 meters	Volume: 5600 m³
Price: 309.9 MCr	Target Size: S
Configuration: SL Sphere	Tech Level: 9/12
Mass (Loaded/Unloaded): 5720.3 / 5509

Engineering Data

Power Plant: 1081 MW Fusion Power Plant, 1 year duration (162.15 m³ fuel)

Jump Performance: None

Jump Fuel: 0 m³

G-Rating: 4G HEPlaR (200 MW/G), Auxiliary Improved CG (80 MW)

G-Turns: 102, 25 m³ fuel each, an additional 6-GTurns can be obtained by burning 150m³ of the power plant fuel)

Maint: 186

Electronics

Computer: 2xTL-11 Fibre-optic computer (0.7 MW)

Commo: 2xMaser (Unlimited; 0.6 MW), Radio (10 hex; 10 MW)

Avionics: Imaging EMS, IGS positioning, 150 km/h NOE

Sensors: AEMS (10 hex; 27.5 MW), PEMS Folding array (5 hex; 0.2 MW), ), PEMS Fixed array (4 hex; 0.1.5 MW)

ECM/ECCM: EMS Jammer (4 hex;33 MW), EM Masking (5.6 MW), 600 TL-12 Decoys in 4 Dispensers.

Controls: Bridge with 9 bridge workstations, 14 normal workstations

Armament

Offensive 2xLBM-149-5-2: tuneable gravitic focus manned barbette laser. Can be overpowered to -2 Diff Mods with 41.389 MW power input. (Loc:6,9; Arcs: 1,2,3,4; 4.139 MW; 1 crew)
25 Ton Missile Bay (Loc:15; 0.15 MW; 1 crew, 27 Missiles, 3 autoload tubes, 3 reload cradles)
2xLTR-22-2-5: tuneable gravitic focus remote turret laser can be overpowered to -5 Diff Mods with 48.889 MW power input (Loc:13,14; Arcs: 2,3,4,5; 0.611 MW; remote).

Defensive: 2xSand Turret (Loc:10,11; Arcs: All; 1 MW; 1 crew)

Master Fire Directors: 2xTL-12 (4 Diff Mods; 10 hex; Msl 10 hex; 3.25 MW; 1 crew); 2xTL-12 (4 Diff Mods; 2 hex; 1.29 MW; 1 crew).

Name	Short	Medium	Long	Extreme
LBM-149-5-2	5:1/10-31	10:1/10-31	20:1/5-16	40:1/3-8
LTR-22-2-5	2:1/4-12	4:1/4-12	8:1/3-10	16:1/2-5

Accommodations

Life Support: Extended (1.0802 MW)

Grav Compensation: 2Gs (27.005 MW)

Crew: 32 (1xManeuver, 2xElectronics, 14xEngineer, 9xGunnery, 2xMaintenance, 4xCommand)

Crew Accommodations: 18xSmall Stateroom (0.5 kW)

Passenger Accomadation: None

Other Facilities: Emergency Low Berth (2 kW)

Cargo: 85.8 m³ 1 Small Cargo Hatch

Small Craft and Launch Facilities: None

Air Locks: 4

Notes

Total Fuel Tankage: 2712.13674 m³ (193.7 tons) Fuel scoops (20% of ship surface), fills tanks in 0.61 hours Fuel purification machinery (1.484MW), 76.76 hours to refine 2712.13674 m³. 71.1 MW power surplus.