He had held the role since June 2018, after joining the luxury cruise brand from McDonald's Corp.
Seven Seas Splendor introduction
Chabus was involved in the introduction of Seven Seas Splendor earlier this year. The new ship was named by supermodel Christie Brinkley during PortMiami festivities on Feb. 21.
There was no immediate word on a replacement for Chabus.
Quinn continues to act as the agency of record for Regent public relations.