Mr Hobson, regatta chairman, said prior to the incident, 67 boats were on the water contending with heavy rain and 40mph (64km/h) winds.
Mr Hobson praised the response from all services, labelling it a “real team effort”.
He said: “The response from the classics safety team, the Coastguard Harbour authorities and RNLI in difficult conditions on the water was excellent.
“Situations like this, whilst rare, can happen very quickly and the team’s response was to their credit.”
He said the boat which sunk had been recovered on Sunday.
