The Courier class is a 23rd century counterpart to the Danube/Defiant, in that she's a small support craft assigned to a colony or starbase. This class of ship is mainly designed to give starbase personnel a bit more freedom of movement, allowing them to perform scientific studies in-system without calling in a starship, defend themselves against pirates and provide limited cargo/supply shipping ability.
She carries a crew of 34 (10 officers, 24 crewmen including research staff) with an autonomy of about 3 months and a top speed of Wf 6 (5 cruise). Standard shields, one forward phaser bank, no torpedoes.
The angular cargo hold was sorta-inspired by the SS Huron.
ETA: and I got the idea for the deckplans, as well as some of the internals, from the deckplans of that very ship.
If you have any questions, remarks, glaring omissions, rants, whines, whatever, go ahead.
Side view, no nacelles, 2m human for scale:
Front view, with nacelles:
Cutaway side view showing the deck structure:
Deck one:
Deck two:
Deck three, saucer, junior officer's quarters aren't finished yet:
Deck four:
Deck five, the nacelle control rooms are 2m half-decks connected to deck 6 via ladders:
Deck six:
