From publisher blurb:
Starships are a central part of the space opera genre. While it is entirely possible to run a campaign without once using starship combat rules, chances are good the Player Characters will find themselves in a space battle at one point or another. When this happens, the goal is to make the battle just as exciting as when the heroes fight enemies on the ground.
This scifi 5E compatible supplement contains everything you need to know to put starships in your game. It includes rules for everything from merging PCs and starship operations, starship traits, 13 core starship classes, rules for modifying starships, creating your own, and conditions.
The guiding design philosophy for this product was to create a set of rules that will feel familiar to 5th edition players, avoid being overly complicated, while still maintaining systems that make sense for starships.