Here is an update which adds a Boarding Actions tab (from the Starship Operations Manual) to a Google spreadsheet.
Starfinder Starship Reference Sheets v1.2
The first tab of the spreadsheet has instructions. The advantage of google sheets is that as one player updates the Critical Damage tab, the DCs of various crew actions are updated for all viewers sharing that sheet. The intended audience is for gaming groups where the players have access to computers and internet (especially groups playing remote or VTT).
Please let me know if you find any errors or have suggestions for improvement.