Inquest into the Suspected Death of Yaritosai TOMIOKA
Deceased
Yaritosai TOMIOKA
Demographics
47y, male
Date of death
1972-10-05
Finding date
2022-02-09
Cause of death
unascertained; manner of death suicide by going overboard into the ocean
AI-generated summary
Yaritosai Tomioka, a 47-year-old Chief Engineer on a Japanese fishing vessel, disappeared from the Toku Ju Maru on 5 October 1972 in the Indian Ocean, 200 nautical miles west of Fremantle. A six-page suicide note was found in his cabin in which he apologised for his inability to repair the vessel's critical refrigeration system and indicated his intention to weigh himself down and go overboard. Despite a 12-hour sea search, no body was recovered. The coroner concluded death occurred by suicide but cause of death remained unascertained (could have been injury from fall, drowning, or predation). This case highlights the occupational and psychological pressures faced by seafarers in isolated environments and the importance of mental health support and early intervention when crew members show signs of distress related to work responsibilities.
AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes.
Contributing factors
inability to repair critical refrigeration system on vessel
work-related stress and sense of personal failure
loss of will to live
occupational and psychological pressures in isolated maritime environment
This page reproduces or summarises information from publicly available findings published by Australian coroners' courts. Coronial is an independent educational resource and is not affiliated with, endorsed by, or acting on behalf of any coronial court or government body.
Content may be incomplete, reformatted, or summarised. All court orders for redaction and non-publication are respected; documents with technically defective redaction have been excluded from the database entirely. Always refer to the original court publication for the authoritative record.
Copyright in original materials remains with the relevant government jurisdiction. AI-generated summaries and tagging are for educational purposes only, may contain inaccuracies, and must not be treated as legal documents. We welcome feedback for correction —