The person at the center of this case
Robert W Gilsey
Missing Person · Open
20 years waiting · since 2006
Missing Person: Robert W Gilsey
Justice for Robert W Gilsey — the trail went cold in 2006, but the truth hasn't.
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Key leads to think about
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evidence
Lead #1Why was the boat's engine running with the throttle open when found? Does this indicate an emergency or deliberate abandonment?
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location
Lead #2What was Robert's intended destination or purpose for taking the boat out on October 6th?
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clue
Lead #3Were there any witnesses who saw Robert or his boat on the water that day, or observed him leaving the marina?
Robert W Gilsey, a 57-year-old man, disappeared on October 6, 2006, after his power boat was discovered off Cape Elizabeth, Maine with the engine running, throttle open, and out of gas—but no sign of him aboard. He lived on a sailboat at Diamond Cove Marina in Portland and was last known to be in contact that same day. The circumstances remain unclear, and investigators have not determined whether he fell overboard, abandoned the vessel, or met with foul play.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
👤
person
Lead #4Did Robert have any known medical conditions, financial troubles, or personal circumstances that might explain his disappearance?
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Official wording
Source Narrative
NamUs case MP53360. Missing person: Robert W Gilsey.
Last known contact: 2006-10-06 in Portland, Cumberland, ME. Circumstances: Robert lived on a sailboat moored at Diamond Cove Marina.
His power boat was found off Cape Elizabeth without him on board. The engine was on, the throttle was open, and it had run out of gas.
Demographics: 57 years, Male, White / Caucasian. Physical description: 6 ft 0 in, 185 lbs, hair: Gray or Partially Gray, eyes: Blue.
Clothing and accessories: Clothing: Green long-sleeved windbreaker, possibly brown shorts.. Investigating agency: Maine Marine Patrol - Augusta Headquarters | 06-1006 | 2006-10-10.
Timeline of Events
👁️
2006-10-06
Last known contact
Robert W Gilsey was last known to be in contact in Portland, Cumberland, ME
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2006-10-06
Boat discovery
Power boat found off Cape Elizabeth with engine running, throttle open, and out of gas—no occupant aboard
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2006-10-10
Investigation initiated
Maine Marine Patrol began investigation (Case 06-1006)
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:October 6, 2006
Last Updated:September 26, 2026
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Phone: 2076339595
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Case Information
Incident:October 6, 2006
Last Updated:September 26, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2076339595
You can remain anonymous