Inquest into the death of Mark MURPHY

49y · Male·Global cerebral hypoxia due to cardiac arrest and drowning, with bilateral bronchopneumonia being a significant condition contributing to death but not relating to the condition causing it.

Mark Murphy, an experienced diver with 657 logged dives, died during an occupational diving course when his full face mask became accidentally dislodged underwater, resulting in sudden cold-water exposure. This triggered a diving reflex causing physiological stress, hypoxia, drowning, and cardiac arrest. Expert evidence strongly supported accidental mask dislodgement as the primary mechanism rather than a primary cardiac event. Critical systemic failures included: inadequate risk assessments, particularly regarding standby diver capability and task loading; poor briefing practices; inadequate medical screening (Mark had undisclosed recent chest pain and hospital admission); and dual role assignment of the standby diver as both attendant and rescue diver. The standby diver lacked current fitness verification and performed his role without the minimum delay expected. Multiple documentation deficiencies were identified including unrecorded communications, inaccurate student log sheets, and absence of formal daily risk assessments.