Authorities say Edward Broderick was last heard from around 6 p.m. Saturday, when he told a friend that his vessel was en route to a clamming facility in Highlands.
The friend reported him missing about four hours later, and Broderick's submerged vessel was found and identified outside the marina where he originally intended to end his trip.
A rescue boat crew from Coast Guard Station Sandy Hook spent most of Sunday searching for Broderick, along with the state marine police and a helicopter crew from Coast Guard Air Station Atlantic City. The search was called off at dusk and was expected to resume Monday morning.
Broderick was last seen wearing gray or green sweatpants.