The person at the center of this case
Robert W Gilsey
Missing Person · Open
19 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.
Start here
Key leads to think about
🔍
evidence
Lead #1Why was the power boat's engine running with the throttle open when found? What caused it to run out of fuel?
📍
location
Lead #2How far did the boat drift from where Robert may have gone overboard to where it was discovered off Cape Elizabeth?
💡
clue
Lead #3Was Robert wearing the green windbreaker and brown shorts when he disappeared, and could these items provide clues about his final moments?
Robert W Gilsey, a 57-year-old man living aboard a sailboat at Diamond Cove Marina in Portland, Maine, disappeared on October 6, 2006. His power boat was discovered off Cape Elizabeth with the engine running, throttle open, and fuel depleted—suggesting he may have gone overboard. Despite investigation by Maine Marine Patrol, the circumstances of his disappearance remain unclear and his whereabouts unknown.
Try asking
Claim this imported case
A one-time $10 claim transfers this imported case workspace to your account. You get 10 uploads for this case, 25 daily AI questions for this case, and public tips with files route to you.
10 uploads25 AI questions/day
This does not start a subscription. When the included limits are reached, the Personal plan unlocks more workspace capacity.
More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
👁️
witness
Lead #4Were there any witnesses at Diamond Cove Marina or along the water who saw Robert or his boat on October 6, 2006?
Have information about any of these leads?
Even the smallest detail could be the key to solving this case.
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 last known contact in Portland, Cumberland, ME
👤
2006-10-06
Disappearance
Robert disappeared; his power boat was found off Cape Elizabeth with engine running, throttle open, and out of fuel
🕵️
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:July 14, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2076339595
You can remain anonymous
Leave a comment
Comments
Case Information
Incident:October 6, 2006
Last Updated:July 14, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 2076339595
You can remain anonymous