When you begin playing Starfield, you start off with the Constellation spaceship, the Frontier. However, as you adventure through the game, you’ll find, hijack, and buy many more ships than Barrett’s cozy little starting vessel. Whether you prefer sentimentality or utility, you’ll want the proper vehicle as your home ship — AKA the default ship you land, fly, and fight in. So how do you make sure your favorite vessel ends up as your home ship?
Why is my home ship not the Frontier?

As you play through Starfield, you’ll run into other spaceships, either in space itself or as they land on a planet. Whenever you clear out the crew, sit in the captain’s chair, and take the ship as your own, the game will automatically make that ship your home ship. So, the first time you ever encounter a ship like this in Starfield, you might be terribly perplexed why afterward you suddenly aren’t flying the Frontier. This feature is why.
If you want to go back to flying the Frontier — or any other spaceship — you have to change your designated home ship.
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Where to change your home ship in Starfield

If you want to change your home ship, you simply have to head to any of the major space hubs across Starfield’s galaxy. Early in the game, this means New Atlantis’ MAST spaceport, where you first land. Talk to the ship services technician who should be standing by the launch pad. With him, you’ll be able to modify, purchase, and sell spaceships. This includes changing your home ship.
All you have to do is scroll through your spaceships and click the H button (PC) or the Menu button (Xbox) while looking at the vessel you want. This will now be your default home ship until you change it yourself or hijack a new spaceship.
When you change a home ship, be warned that any crew you previously assigned might not all make it to the new ship, especially if you choose a smaller/faster vessel. So, before embarking, check your crew settings and make sure everything is in order.