Steven Jones, the founder of the Seafarers Happiness Index, reports on disturbing deaths at sea figures tallied by the International Labour Organization. A groundbreaking new report on fatalities onboard ships has revealed that illness and disease are the leading killers of seafarers worldwide. The first standardised global data collection on seafarer deaths, conducted for fatalities occurring in 2023, provides unprecedented insight into the dangers faced by those who work at sea. Hidden crisis at sea In 2022, the International Labour Conference approved important amendments to the Maritime Labour Convention (MLC, 2006). One key provision required that all deaths of seafarers employed, engaged, or working onboard ships be investigated, recorded, and reported annually for inclusion in a global register. The resulting report provides the first comprehensive look at fatality patterns across shipping. This inaugural experimental data collection phase gathered information from 51 countries and documented 403 seafarer deaths. The statistics paint a sobering picture: illnesses and diseases claimed 139 lives (34.5%), making them the leading killer of seafarers, outpacing the dangers of falling overboard (22.6%) and workplace accidents (18.4%). This revelation is deeply troubling, exposing the persistent failure to provide adequate healthcare at sea. At first glance, this might seem unsurprising. After all, cardiovascular diseases and non-communicable illnesses are the leading causes of death globally, with heart disease and cancer dominating mortality statistics in developed nations. Yet the maritime context reveals a disturbing paradox. What makes this data particularly alarming is the fact that fatalities are occurring despite rigorous pre-employment medical screenings designed to create a healthier, more resilient workforce. When seafarers who have passed medical fitness tests are still dying from preventable conditions at sea, it signals a fundamental breakdown in the system. When checks are failing Going to sea has always had its unique attendant dangers, now we can see that it is literally bad for one’s health. If warning signs are being missed before deployment, then even advances in telemedicine, training, and communications cannot prevent the deadly toll that persistent health risks exact on seafarers. The reality is especially stark as ships often operate in profound physical isolation. When a seafarer suffers a heart attack or stroke at sea, the critical “golden hour” for treatment often slips away before medical treatment can be reached. This remoteness proves lethal. The deaths from health-related issues at sea occur nearly twice as often as those from occupational accidents, while in ports these numbers converge. Though a ship may boast a “hospital,” the quotation marks tell the real story. Even with expert medical advice and quality equipment, the fundamental limitations of emergency care at sea remain insurmountable, as the figures now show. Patterns of risk Then come the compounding risk factors. The fact that shipboard work combines multiple health stressors including physical demands, irregular work schedules, limited exercise opportunities, potentially poor dietary options, and psychological stressors including isolation. As is so often reported to the Seafarers Happiness Index, these issues are a constant for seafarers to contend with. There is also the small matter of an aging workforce: With 83% of fatalities occurring am