Medium Cabin

A medium cabin allows multiple passengers to be carried on a ship.

In-Game Description
Passenger cabins allow for the transport of civilian space travelers, and are a prerequisite for taking on any of the lucrative transport missions.

Characteristics
Up to five passengers can be carried in a medium cabin. Cabins cannot be combined to form larger cabins, meaning that a pilot will have to settle with smaller cabins taking up multiple spaces if a larger one cannot be found.

As the description says, cabins are needed before undertaking any passenger mission, whether it be by request from the space lounge or during certain missions in the Supernova storyline.

Sometimes, cabins can be looted from ships, suggesting that either they were carrying passengers or intending to carry passengers.