NTSB investigators say fatigue played a part in a tugboat crash on the Hudson River that killed three crew members, including a Long Islander.

Investigators say the tugboat was inadequately staffed, and the crew had no more than five hours of uninterrupted sleep in at least three days before the crash.

As News 12 has reported, the “Specialist” slammed into a construction barge near the new Tappan Zee  Bridge in March of 2016. The 90-foot vessel sank.

Timothy Conklin, 29, of Westbury, and two others were killed.