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Did your ancestor serve in Britain's Royal Navy during the French Revolutionary Wars 1786-1801? While standard muster books merely show when a man left his ship, these unique medical logs reveal the precise illnesses, wounds, and accidents that ended a sailor's career at a time when disease claimed far more lives than enemy action. This collection, digitised in partnership with the Royal Navy Museums, allows you to search by name, rank, ship, and ailment, providing a rare and deeply personal glimpse into the harsh realities of life on the high seas during the age of sail.

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What can these records tell me?

You will find information including


First name


Last name


Injury


Quality (rank)


Date of discharge


Additional information, including in some cases what happened to them following their discharge, can be found in the original record.

During the late eighteenth century, the Royal Navy was the backbone of Britain’s global strategy, rapidly expanding to counter the threat of Revolutionary France. Life on the high seas during the age of sail was famously brutal, but the greatest threat to a sailor was rarely enemy cannon fire. Between 1793 and 1801, naval combat accounted for roughly 6,500 British deaths, whereas disease, infection, and workplace accidents claimed upwards of 84,000 lives. Cramped, damp conditions below decks, poor sanitation, and diets lacking in fresh nutrients made warships breeding grounds for typhus (often called "ship fever"), dysentery, and scurvy.


To maintain fighting efficiency, the Admiralty relied on a structured system of medical management, led by ship surgeons and the Sick and Hurt Board. When a seaman or marine became chronically ill or permanently disabled by an injury, he was sent to a naval hospital like Haslar or Plymouth, or onto a dedicated hospital ship. Here, a formal medical survey was conducted by a panel of surgeons. If the man was deemed permanently unfit for duty, he was officially certified as "invalided" and given a medical discharge. The period 1786-1801, significant changes in the medical treatment of sailors took place including the introduction of lemon juice to combat scurvy.

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