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302 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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Summary based on the NamUs case record (MP8514) and 11 other sources
Lynn Sherwood Deibert was last seen off the coast of Lewes, Delaware, on February 4, 2007, after a tragic maritime accident near the entrance to Delaware Bay. He was a federal ship pilot associated with the Chesapeake Federal Pilots Association and had more than 30 years of sailing experience. Online missing-person records identify him as a white male with brown hair and brown eyes; distinguishing features included scars on his abdomen, ankle area, and above his right eyebrow.

Late that night, Deibert was transferring from the pilot boat Big Stone 5 to the 645-foot freight vessel Energy Enterprise, which was bound for Baltimore. During the boarding attempt, he climbed partway up the ship’s ladder, paused briefly, and then fell into the water. The fall was witnessed by crew members. Reports say he landed on his back, did not strike the ship during the fall, and disappeared in the cold, rough water despite immediate efforts to help him.

The conditions were dangerous and unforgiving. The water temperature was reported at about 39 degrees Fahrenheit, with winds around 20 to 25 knots and seas reported around six feet. Witnesses reportedly threw multiple life rings into the water, and Deibert was said to have been wearing a flotation device when he entered the bay. The accident occurred roughly two miles off Cape Henlopen, near the mouth of Delaware Bay.

The U.S. Coast Guard launched an extensive search involving helicopter crews, rescue boats, a cutter, and aircraft support. Crews searched for more than 14 hours and conducted 13 search sorties before suspending the operation. The Big Stone 5 was taken to Lewes for examination, while the Energy Enterprise continued toward Baltimore, where investigators planned to inspect the vessel and interview crew members.

Deibert’s body was never recovered. Because of the circumstances of the witnessed fall, the severe cold-water conditions, and the unsuccessful search, he has long been presumed lost at sea, and online case summaries state that he was later declared legally dead. His case remains a solemn reminder of the hazards faced by maritime pilots, whose work often requires them to transfer between vessels in darkness, rough seas, and extreme weather.

Last Seen: Feb 4, 2007

Possible Unidentified Matches (9)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

81%Moderate
John Doe — Philadelphia, Pennsylvania - unidentified case UP2834
John Doe — Philadelphia, Pennsylvania
UP2834 • Found Dec 13, 2007
View case
Sex ✓Male
Age 100%Est. 50–65 vs 53
Race 100%White
Location 80%83 mi away
TimingFound 10 months after last seen
Height 100%5'9" vs 5'8"–5'10"
Weight 81%244 lb vs 303 lb
Hair 40%Gray vs Brown
Eyes 100%Brown vs Brown
78%Possible
John Doe — New York, New York - unidentified case UP5558
John Doe — New York, New York
UP5558 • Found Oct 5, 2007
View case
Sex ✓Male
Age 100%Est. 50–60 vs 53
Race 100%White
Location 66%147 mi away
TimingFound 8 months after last seen
Height 100%5'11" vs 5'8"–5'10"
Weight 25%179 lb vs 303 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
77%Possible
John Doe — Weehawken, New Jersey - unidentified case UP1674
John Doe — Weehawken, New Jersey
UP1674 • Found Nov 6, 2007
View case
Sex ✓Male
Age 100%Est. 40–55 vs 53
Race 100%White
Location 65%150 mi away
TimingFound 9 months after last seen
Height 100%5'10" vs 5'8"–5'10"
Weight 40%195 lb vs 303 lb
Hair 40%Gray vs Brown
Eyes 100%Brown vs Brown
76%Possible
John Doe — Capitol Heights, Maryland
UP10112 • Found Aug 6, 2011
View case
Sex ✓Male
Age 100%Est. 50–65 vs 53 when missing
Race 100%White
Location 76%96 mi away
TimingFound 5 years after last seen
Height 100%5'9" vs 5'8"–5'10"
76%Possible
John Doe — Brooklyn, New York - unidentified case UP7425
John Doe — Brooklyn, New York
UP7425 • Found May 21, 2010
View case
Sex ✓Male
Age 100%Est. 40–55 vs 53 when missing
Race 100%White
Location 66%146 mi away
TimingFound 3 years after last seen
Height 100%5'8" vs 5'8"–5'10"
Weight 50%206 lb vs 303 lb
Hair 40%Gray vs Brown
Eyes 100%Brown vs Brown
75%Possible
John Doe — Philadelphia, Pennsylvania - unidentified case UP111096
John Doe — Philadelphia, Pennsylvania
UP111096 • Found Oct 26, 2023
View case
Sex ✓Male
Age 100%Est. 60–70 vs 53 when missing
Race 100%White
Location 80%82 mi away
TimingFound 17 years after last seen
Height 100%5'8" vs 5'8"–5'10"
Weight 0%132 lb vs 303 lb
Hair 70%Gray vs Brown
Eyes 100%Brown vs Brown
75%Possible
John Doe — Trenton, New Jersey
UP64638 • Found Sep 4, 2019
View case
Sex ✓Male
Age 100%Est. 45–55 vs 53 when missing
Race 100%White
Location 75%102 mi away
TimingFound 13 years after last seen
Height 100%5'4"–5'10" vs 5'8"–5'10"
Hair 70%Gray vs Brown
75%Possible
John Doe — Avalon, New Jersey
UP1761 • Found Nov 22, 2007
View case
Sex ✓Male
Age 60%Est. 18–99 vs 53
Race 100%White
Location 94%32 mi away
TimingFound 10 months after last seen
Height 100%5'7" vs 5'8"–5'10"
75%Possible
John Doe — New York, New York - unidentified case UP5541
John Doe — New York, New York
UP5541 • Found Jun 5, 2007
View case
Sex ✓Male
Age 85%Est. 40–60 vs 53
Race 100%White
Location 66%147 mi away
TimingFound 4 months after last seen
Height 100%5'7" vs 5'8"–5'10"
Weight 0%142 lb vs 303 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.