- Rochester Cruising Club
- Royal Engineer Yacht Club
- Royal Naval Sailing Association
- Segas Sailing Club
- Skilltrack
- South Eastern Tug Society
- Strood Pelican Cruising Club
- Strood Yacht Club
- Swale Marina
- Swanning About Charters
- Thames Sailing Barge Trust
- Upnor Sailing Club
- Victory Moorings
- Whitton Marine
- Wilsonian Sailing Club