Our Story
We started Onyx because the UK market was underserved. Big management firms wanted 70ft+ vessels. Smaller owners were left dealing with fragmented yard work, forgotten maintenance, and eye-watering surprise bills.
Our clients are weekend cruisers, family boaters, and occasional charterers. Axopars, Sunseekers, Princess yachts, Fairlines—vessels that spend most of the year on a mooring or in a marina, not at sea with permanent crew.
We built a management service designed for this reality: seasonal planning, fixed-price retainers, and no fluff. Just professional oversight that keeps your vessel ready when you want to use it.
Our Approach
Rigorous Standards
We hold ourselves to the highest technical and operational benchmarks.
Transparency
Live budgets, open communication, and honest advice. Always.
Partnership
We work for you, not for suppliers. Your interests come first.
Leadership Team
Decades of combined technical and operational expertise.
James Henderson
Managing Director
15+ years managing Solent-based motor yachts. Former skipper, qualified engineer.
Sarah Mitchell
Technical Coordinator
Certified marine surveyor. Specialist in Sunseeker, Princess, and Fairline systems.
David Knowles
Client Services
Ex-marina manager with deep South Coast supplier network. Your first point of contact.
Coverage
Based in the Solent with extensive South Coast coverage: Hamble, Ocean Village, Lymington, Poole, Brighton.
We also support seasonal Med cruising for clients who take their vessels across the Channel.