The Dropship delivers items that the crew ordered via the terminal.
If an employee buys items while the ship has landed on a moon, the dropship will deliver these items to that moon. If the ship is in orbit at the time of the transaction, the dropship will deliver the items to the next moon the ship lands on.
When the dropship has landed on the designated landing spot, a melody that helps the crew to locate it will be played for 30 seconds. Employees can interact with one of the four storage compartments located on each side of the exterior of the vehicle to open the doors and retrieve the items.
After 30 seconds, the ship abruptly leaves and supposedly returns to an unknown location to restock. If the crew didn't open it before that, the rocket will keep all the items, and they will be lost. It is advised to quickly retrieve all the items after the ship has landed to not lose anything.
General Tip: Do NOT stand underneath the dropship when it’s about to land, as this will instantly crush you to death.