The person at the center of this case
Kerry Lyn O'Brien
Missing Person · Open
3 years waiting · since 2023
Missing Person: Kerry Lyn O'Brien
Justice for Kerry Lyn O'Brien — the trail went cold in 2023, but the truth hasn't.
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Key leads to think about
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person
Lead #1What happened to Frank O'Brien and William Gross, the other two people aboard the vessel?
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vehicle
Lead #2Where is the 44-foot S/V Ocean Bound and what caused its disappearance?
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evidence
Lead #3Why were extensive searches of the area unsuccessful in locating the vessel or any survivors?
Kerry Lyn O'Brien, a 52-year-old woman, went missing on April 4, 2023, while sailing aboard the 44-foot S/V Ocean Bound with her husband Frank and sailor William Gross near Mazatlan, Mexico, en route to San Diego. The vessel and all three people aboard have never been located despite extensive search efforts in the area. The circumstances of their disappearance—whether due to accident, mechanical failure, or other causes—remain unknown and warrant continued investigation.
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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.
⏰
timeline
Lead #4Were there any distress signals or communications from the vessel before it went missing?
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Official wording
Source Narrative
NamUs case MP103572. Missing person: Kerry Lyn O'Brien.
Last known contact: 2023-04-04 in San Diego, San Diego, CA. Circumstances: Kerry and her husband Frank and another sailor, William Gross, were sailing aboard the 44-foot S/V Ocean Bound.
They were last heard from on 04/04/23 near Mazatlan, Mexico enroute to San Diego. Extensive searches of the area were unsuccessful in locating them or the boat.
Demographics: 52 years, Female, White / Caucasian. Physical description: 5 ft 3 in, 130 lbs, hair: Blond/Strawberry, eyes: Hazel.
Investigating agency: Anchorage Police Department | 230013486.
Timeline of Events
👁️
2023-04-04
Last Contact
Kerry Lyn O'Brien, her husband Frank, and sailor William Gross were last heard from aboard the 44-foot S/V Ocean Bound near Mazatlan, Mexico while sailing toward San Diego.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:April 4, 2023
Last Updated:May 21, 2026
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Phone: 9077868900
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Case Information
Incident:April 4, 2023
Last Updated:May 21, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 9077868900
You can remain anonymous