Richard Alan Byhre, 76, was last seen February 10, 2015, when he departed the Southwestern Yacht Club on Shelter Island in San Diego aboard his 28-foot sailboat Princess and never returned. Byhre, an avid whale watcher who usually took day trips, carried a tablet and communicated with his wife of 34 years by email while on the water; he did not own a cellular phone because of a hearing impairment. The Princess is described as having a deep blue hull with a white stripe near the bottom.

An extensive search was launched after Byhre failed to return but no trace of him or the sailboat was found. The circumstances of his disappearance remain a mystery and the San Diego Police Department is listed as the investigating agency. If anyone saw the Princess or remembers Richard Byhre on February 10, 2015, please share what you know.