This is the upgrade to the Cane class SDB. Robert Dean did a couple of SDB’s @ TL10 one 400 tons and one 600 tons both in line with the Hart, which I would normally have used (if someone else has gone to the effort of designing something that I can use IMTU I generally use theirs because it saves me the bother). I expect that Rob did his designs before Fusion Rockets were around for MT, so they both lack manoeuvre away from planetary bodies (hence my design of the Hart Class).

Comments welcome as always.

Hart Class System Defence Boat

Updated 2020-11-04

CraftID:	Hart Class, System Defence Boat, Type SB, TL10, Cr 611,493,004,
Hull:	540/1350, Disp=600, Config=4SL, Armour=52E, Unloaded=14282.586 tons, Loaded=14663.944 tons
Power:	90/179, Fusion=8022Mw, Duration=29/87 30/60, Loco=1857.3Mw, Duration=29/87
Loco:	30/60, Fusion Rocket= 87,988 tons thrust, Max Accel=6 G, NOE=40 kph, Cruse=750 kph, Top=1000 kph, Agility=3
Comm:	Radio=System x3, Laser=System x3, Maser=System x3
Sensors:	EM Mask, Active EMS=FarOrbit x2, Passive EMS=Interstellar x2, Passive Audio x2, Radiation Sensor=V Distant x2, Magnetic Sensor=V Distant x2, Headlight x10, Environmental Sensor x2 ActObjScan=Rout, ActObjPin=Rout, PasEngScan=Rout
Off:	Missile=x03 BeamLaser=xx3 Batt 2 Batt 2 Bear 2 Bear 2
Def:	DefDM=+8
Control:	Computer=4/fib x3, Special=HeadsUp display x15, Panel=Dynamic Link x1184, Electronic Circuit Protection, Environ=basic env, basic ls, extend ls, grav plates, inertial compensators
Accom:	Crew=15 (Bridge=3, Engineering=3, Gunners=5, Flight=1, Commander=2), Small Stateroom=15, Seats Adequate=4, Airlock x2 SubCraft=25 ton Keftarnin Class Fighter, Magazines=36 kliters (30 battery-rounds)
Other:	Cargo= 76.025 kliters, Fuel= 4361.903 kliters, Fuel Purification Plant (purifies tankage in 24hrs), Fuel Scoops (fills tanks in 2.69 hours) ObjSize=Average, EmLevel=Faint
Comment:	Triple Missile Turrets x4 Triple Beam Laser Turrets x2 Battery Round=6 Missiles Construction Time=120 weeks single, 96 weeks multiple Cost in Quantity=Cr 489,194,403

The Hart class is an all County’s design to replace the Cane class system defence boats using the latest in starship technology, including a crystaliron hull, grav plates and inertial compensations. The benefits of the crew living in a 1G environment on long duration patrols far out way almost any other consideration for the replacement, and as such the Hart class was one of the fist all County designs to be proposed and has been produced in County ship yards for the last 129 years since 795; eight years after the battle of Homestead.

The Harts’ hull design is an exact replica of the Cane class, on order to fit the Copley and Nicolson Class Jump shuttles for logistical purposes. In fact visually it’s impossible to note any difference between the two classes. Internally however they are completely different. The fact that the Hart can have carpets on the floor and some soft decorations that are not bolted down stands out if nothing else. The handrails and connectivity points are still installed in the Hart class as County battle doctrine assumes that grav plates and inertial compensation are not always available, and as such the crew train with in grav and grav less environments.

County regulations, as always state that the Hart cannot enter planets with habitual atmospheres, however in practice over the last 120 years there has been very little need to do so although the Harts carry a single Keftarnin class Fighter as a sub craft, which being a gravitic fighter has the ability to follow targets into habitual atmospheres as needed.

County SDBs are normally deployed in flights of two or four with tactics being that when the Keftarnin’s are launched they combine into flights of two or four.

The Hart’s can be combat capable for 29 days continually, a slight increase over the Canes, however the non-combat power requirements are only 1.3% of powerplant output, meaning that deployment duration can be over 5 years (2101 days). While deployments are usually nowhere near that long the increase cargo space available on the Hart means long duration deployments are more often assigned to a flight of Harts than they are to flights of Cane’s. For each hour of combat power used the Cane loses 1.6 days of non-combat duration.

The Keftarnin Class Fighter is by Antony Farrell here:

http://www.skaran.net/megatraveller/keftarnin.html

Best regards,

Ewan

For the fallen in the cause of the free:

"When I go home I will tell of them and say,

For our tomorrow, They gave their today."

My spelling is entirerly due to dyslexia, typos, and poetic license