W.D. Baysinger's Noumena, a Delta II boat, and Bonner/Sannon Syndicate's Wings, a More A. were winners today in the most populous classes of the Chesapeake Bay Yacht Racing Association's Race Week opener.

There were 26 Delta II and 26 Morc A craft in the 160-boat fleet.

In a change from the format of previous years - in which all races were "round-the-buoys" events - today's contest started at the mouth of Annapolis Channel and finished near Galesville.

The 10-class fleet raced under clear skies and seven-knot southerly winds.

The IOR and Delta I boats sailed a five-leg. 13.3 nautical mile course, which included a short beat, a star-board reach, a long beat, a port reach and a short beat to the finish.

The Delta II. Morc. Alberg 30, Cal 25 and the Racing Division boats used a four-leg, 8.3-nautical mile course, with a short beat, a starboard reach, and two legs to windward.

Friday's race will start where today's race finished and finish where it started.

Saturday's race will be a "round-the-buoys" event, with a start and finish near the mouth of Annapolis Channel.

On Sunday the fleet will do another "round the buoys."