Star Trek Online's new Odyssey-class starship, the game's official website has them.
Acquiring one is as easy as leveling a Federation character to five, since Cryptic is handing out the new hulls for free in celebration of STO's second anniversary. You'll need a Vice Admiral rank to pilot the ship, and if you're a bit behind, you'll receive an inventory item that can be redeemed later.
Cryptic says the Odyssey class is "the pinnacle of Federation starship design" and the largest vessel ever built. The ship can operate for lengthy periods without resupply, and it also features universal ensign and lieutenant commander bridge officer stations that can be operated by any bridge officer class.