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Crime Solvers Central
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 (MP19254) and 6 other sources
In May of 1976, a young couple, John and Cordelia McMinn, embarked on what should have been a remarkable journey, but instead became an enduring mystery. Both aged 26, the experienced sailors made preparations to leave Hanalei, Hawaii, aboard their 25-foot trimaran, the 'DRUM'. Their intended destination was Washington State, a voyage they had successfully completed before, but this time, they would vanish without a trace. Family members were aware of their plans to depart that month, and the last known sighting of John and Cordelia was as they boarded their distinctive, homemade vessel. After that moment, neither the couple nor their boat were ever seen or heard from again, leaving behind a void of information and the beginning of a decades-long search for answers.

The 'DRUM' was not an ordinary sailboat; it was a homemade brown trimaran with white hulls and gold trim, making it quite recognizable. The main sail was marked with the number 188, and it carried three other white sails, along with a multi-colored, lightweight drifter sail. The name 'Drum' was painted in green script on the port and starboard quarter of the outriggers. The vessel was approximately 25 feet long and 16 feet wide, with Hawaiian registry number HA4674C displayed on both sides of the main hull's bow. The couple was well-prepared for their journey, and their disappearance under what is presumed to be open seas has led to much speculation. Theories have ranged from encountering severe weather to other maritime perils, but a lack of any wreckage or communication has prevented any single theory from being confirmed.

The investigation into the disappearance of John and Cordelia McMinn has remained open over the years, a testament to the enduring hope of their families and the dedication of law enforcement. The case, logged under NamUs missing person number MP19254 for John, was formally reported to the Lake Oswego Police Department in Oregon years later, highlighting the lasting impact of their disappearance. Over time, their case has been cross-referenced with various unidentified remains, but none have been a match. The circumstances surrounding their vanishing are vague, with no concrete evidence ever surfacing to explain what happened to the couple and their vessel. The disappearance of John and Cordelia McMinn is a somber reminder of the vastness of the ocean and the mysteries it can hold, leaving their loved ones with unanswered questions.

Last Seen: May 12, 1976

Possible Unidentified Matches (4)

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.

78%Possible
John Doe — Honolulu, Hawaii
UP6925 • Found Jul 7, 1987
View case
Sex ✓Male
Age 100%Est. 19–29 vs 26 when missing
Race 100%White
Location 69%131 mi away, same state
TimingFound 11 years after last seen
Height 100%5'11" vs 5'8"–6'0"
Weight 100%143 lb vs 150–170 lb
Hair 100%Brown vs Brown
Eyes 100%Brown vs Brown
78%Possible
John Doe — Honolulu, Hawaii
UP6907 • Found Feb 24, 1979
View case
Sex ✓Male
Age 100%Est. 20–35 vs 26 when missing
Race 100%White
Location 71%120 mi away, same state
TimingFound 3 years after last seen
Height 100%5'7" vs 5'8"–6'0"
Weight 100%139 lb vs 150–170 lb
Hair 100%Brown vs Brown
Eyes 0%Gray vs Brown
77%Possible
John Doe — Haena, Hawaii
UP13057 • Found Mar 16, 1979
View case
Sex ✓Male
Age 100%Est. 25–30 vs 26 when missing
Location 100%4 mi away, same county
TimingFound 3 years after last seen
Height 100%5'9" vs 5'8"–6'0"
77%Possible
John Doe — Haena, Hawaii
UP13056 • Found Mar 16, 1979
View case
Sex ✓Male
Age 100%Est. 25–30 vs 26 when missing
Location 100%4 mi away, same county
TimingFound 3 years after last seen
Height 100%5'11" vs 5'8"–6'0"

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.