Gregory Stephanoff, 60, left the Ala Wai Boat Harbor in Honolulu on October 2, 2013, alone aboard his 42-foot sailboat. He was described as a white male, 69 inches tall, about 180 pounds, with gray or partly gray hair. Five days later, on October 7, his vessel was found unmanned, adrift about 500 miles south of Midway Island in the North Pacific.

Authorities who examined the boat reported no immediate signs of foul play, but there has been no clear evidence about what happened to Stephanoff after he departed. His disappearance is listed in the National Missing and Unidentified Persons System as MP68388.

Did anyone on the water that week or sailing in the Central Pacific recall seeing his boat or notice anything unusual around October 2–7, 2013?