From Halopedia, the Halo wiki
A support ship is a ship classification whose primary purposes are not to stay in combat, but to play more specialized roles - covert infiltration and exfiltration, intelligence gathering, electronic warfare, supply of fleets, etc.
UNSC support ships
- Black Cat-class subprowler - A small craft with limited stealth systems designed as a replacement for the Calypso-class.
- Calypso-class exfiltration craft - A small ship designed for covert extraction.
- Chiroptera-class stealth vessel - An older class of UNSC stealth ship.
- UNSC prowler - The UNSC's primary stealth ship used for reconnaissance and electronic warfare.
- Refit station - A mobile repair and refit platform.
Covenant support ships
- Covenant stealth ship - The Covenant counterpart to the UNSC prowler.
- DSC-class support ship - A ship designed to provide fresh foodstuffs for a fleet.
Forerunner support ships