Isaac Pat Zacharof, 23, went missing on April 21, 1987, when the 93-foot crab fishing vessel Jamie Lynn sank about 90 miles north of Dutch Harbor. He was one of three crew members aboard the boat while it was being towed from St. Paul to Dutch Harbor; the others were Christopher Clark and Anton Kochergin. Isaac was described as American Indian/Alaska Native, with black hair, hazel eyes, 5 feet tall and 120 pounds.

The Jamie Lynn had been badly damaged after breaking from its moorings during a gale at St. Paul on November 30, 1986, becoming swamped and carrying roughly 3,000 gallons of diesel. It was being towed for repairs by the processor Long Harbor when it sank. The Alaska State Troopers in Anchorage hold the official record under case number 8726858, and the disappearance is cataloged in NamUs.

The specifics of how the Jamie Lynn foundered during the tow are scarce. Did anyone on the towing or salvage crew see signs of trouble before the vessel went down, or was there radio traffic from the Jamie Lynn that night?