A 31-foot craft rammed a private dock, sending two of the fishermen into the frigid waters. The third stayed with the sinking boat.
Emergency responders freed him and airlifted him to a hospital, where he died of his injuries early Saturday.
A bride-to-be and a best man were missing Saturday morning, and four others were injured, after a late-night crash on the Hudson River near the Tappan Zee Bridge.
A boating tragedy off Southampton, Long Island, left one person dead Sunday afternoon.
The new law requires operators of boats to take a safety course and have the certificate displayed on board the vessel.