Professional Yacht Management and Insured Captain Services in San Diego, California. Our Captain, Gunnar Williamson, has over a decade and 40,000 nautical miles of experience assessing, servicing, and sailing yachts. An overall love for the industry and the aesthetics of yachting, have guided the Prestige Yacht Management vision. All boats must be treated with care and expertise to reflect their owners and the traditions of the sea.