Coronial
WAother

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
  • prolonged voyage (268 days at sea)
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