Michael Steinmetz, 69, from Essex, was identified by Capt. Brent Trautman.
The captain said Natural Resources Police and a Good Samaritan tried to save Steinmetz but he was pronounced dead at the scene.
Chief Jason Reamy with Cecilton Volunteer Fire Company said the call came at 7:12 p.m. and brought first responders to the area of Veazey Cove
"DNR was first one there," Reamy said, adding Hack's Point Volunteer Fire Company got the call and Cecilton VFC went to assist.
Reamy said two people were on board the 33 foot boat and were brought to Cherry Grove Road.
"They pronounced one person dead and the second person was a patient refusal," Reamy said.
Trautman is asking that anyone with eyewitness accounts, photos or videos of the incident to share that information with investigators.