Ark-27

The Ark-27 is the an Autobot starship inthe IDW comic continuity. It is the ship carring Optimus Prime and his team to Earth after their confrontaion with Thunderwing. Crosshairs is acting as pilot at the time.

(In the IDW comic universe there are many Autobot ships designated Ark. They are presumably named after the first legendary lost Ark. They are differentiated by a number following the name. Hence: Ark-27)