Following Daniel Hasenbos' stellar (no pun intended) example and the tutorial he has thankfully provided, I've tried my hand at designing ship, or for now, a ship for the Starfinder RPG (hey, gotta start small). Though saying it's for Starfinder is kinda arbitrary since I've added no rule-specific specifications, so technically you can use it for a variety of scifi games.

Since this is meant to be an independent small freighter able to operate longer periods in space I added extra storage space and things like an actual kitchen and showers to make it more into a home rather than just a means of transit. It also has a water treatment plant as well as a closed buggy for planetary excursions, including those of the lead-heavy kind.

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And a version without labels for you to play around with:

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