Since you asked nicely for Serenity Stats for the Speculative Trader, I checked the thread link out, & here is a rough draft of it, I tried to stay faithful to the concept while converting it to fit in the 'Verse. Be warned, like in Traveller,this ship ain't cheap...
H500 "Honu" Speculative Trader
Dimensions: L: 160' W: 135' H: 40'
Tonnage: 8000 tons
Speed Class: 4 cruise; 6 hard burn
Crew Quarters: 14 single cabins
Fuel Capacity: 360 tons (600 hours of operation)
Cargo Capacity: 2400 tons
Passenger Capacity: 4 First Class single cabins
Ship Attributes
Maneuverability: D6
Size: D6
Maintenance: D8
Comm/Sensors: D6
Control Systems: D6
Safety Systems: D8
Initiative: D6+D6
Life Points: 14
Price: 808,580?
Complexity: High
Maintenance costs: 26.600? a year/2133? a month
Armament
.Chin-mounted 20lb "point defense" rail gun, firing Cannister rounds with 200 round magazine
.Dorsal Sandcaster Battery (50lb short range Jammer warhead missile rack with 10 missile magazine)
.Ventral Sandcaster Battery (50lb short range Jammer warhead missile rack with 10 missile magazine)
.2 forward mounted 20lb "point defense" rail guns, firing Cannister rounds with 200 round magazine in concealed "Pop-up" turrets
.2 rearward mounted 20lb "point defense" rail guns, firing Cannister rounds with 200 round magazine in concealed "Pop-up" turrets
Gear
.20 ton short range shuttle
.Large Hover Mule
.18 Escape Pods
.Infirmary (modular operating theater)
Programs
Aerial Transport Operations/Honu: D2
Space Transport Operations/Honu: D2
Collision Avoidance: D4
Sensors: D4
Anyway, I changed the laser turrets to cannister firing railguns for defense, & the Sandcasters became missile racks firing jammer warheads (if you read the rules, good old CT Sandcasters are considered to be in that weapon classification) This ship is a real credit sucking machine,but theoretically should be able to fetch premium prices by being able to travel in the more dangerous rimward areas. I would also rule that the Sandcaster racks may not fire any other type of missile except for the "Sandcaster" round, thus making it a legal option for merchant shipping...
For those who are wondering, Honu is Hawaiian for Turtle...