On page two of the Star Smuggler rules comes some sage advice. "Gamemasters of science fiction role-playing games may wish to use this as an adventure or campaign guideline (with appropriate rules adjustments to suit their own RPG system)."
It is now time for some adjustments.
This is the Buffalo Heavy Transport. It tops out at 290 CU.
The Buffalo has some rather interesting quirks. The boat bays are mounted topside of the ship meaning that replacement boats must be flight ready. The boat bays also have enough room for the boat plus skimmer, usually deployed on the boat. The centerline bay is meant for ingress and egress and also has sufficient space for single skimmer. A ramp deploys out the bottom of the ship. The port and starboard bays are big enough for a tank or a ship's boat. Crew quarters are shown in their spacious configuration and can be further partitioned for more crew. This ship has no hidden compartments. Pilotage is so spacious, players must purchase one stasis unit per chair (3) to protect everyone in the space. The Buffalo has 8 hypercharges and can take 15 hits before being destroyed.
If you would like to incorporate this into Star Smuggler, I have pricing and other information here to mix into e001 and e036.