The Open Fleet was formed to provide an additional outlet for those skippers who wish to sail competitively. All types of boats not as specific fleets are part of the Open Fleet and are welcome to race with the club. An official start is given each Sunday for the Open Fleet. The current Portsmouth Yardstick Handicapping system is used by the HSC to make all boats equal. Please see the handbook for details. When racing with the Open Fleet, each skipper is expected to follow the one-design class rules and specifications that govern that type of sailboat being raced. When qualifying for a series, a skipper need not race the same type of boat for the entire series.
The Open Fleet organizes cruising and social activities from time to time during the year.