I always wonder, of the girls from the Touhou games would ever get a chance to have their own ships, what would've been like?

Here, are some of the designs I've concocted in SketchUp and rendered with Indigo Renderer.

(somehow, Indigo Renderer likes to over-magnify my background... but gives a good light source

)

The ever so diligent incident-solver, Reimu Hakurei. Focuses on agility and speed, so she can solve incidences and collect donations more faster.
Design note: based on Gradius V's Vic Viper.

The ever so lucky newcomer, Sanae Kochiya. Focuses on ranged-strikes and armour, extermination of targets can be a messy business.
Design note: based on RayStorm's RGray-1.

The ever hard-working Marisa Kirisame. Focuses on speed and POWER, always gets into speed duel with a certain reporter.
Design note: based on ThunderForce V's Gauntlet.
More would be coming soon.