The term coffin ship (Irish: long cónra) is used to refer to the ships that carried Irish immigrants escaping the Great Irish Famine as well as Highlanders displaced by the Highland Clearances. A coffin ship was also a ship in poor condition that was overloaded and overinsured so it was more valuable to its owners if it sunk. Overloaded, overinsured ships frequently caried Irish emmigrants over the Atlantic and were coffin ships of both types.
Coffin ships carrying emigrants, crowded and disease-ridden, with poor access to food and water, resulted in the deaths of many people as they crossed the Atlantic, and led to the 1847 North American typhus epidemic at quarantine stations in Canada. Owners of coffin ships provided as little food, water, and living space as was legally possible – if they obeyed the law at all.
While coffin ships were the cheapest way to cross the Atlantic, mortality rates of 30% aboard the coffin ships were common. It was said that sharks could be seen following the ships, because so many bodies were thrown overboard.
Legislation to protect emigrant passengers, the Passenger Vessels Act, was first enacted in Britain in 1803 and continued to evolve in the following decades. A revised Act in 1828, for example, marked the first time that the British government took an active interest in emigration matters. Within a few years, regulations were in force to determine the maximum number of passengers that a ship could carry, and to ensure that sufficient food and water be provided for the voyage.
But the legislation was not always enforceable, and unscrupulous shipowners and shipmasters found ways to circumvent the law. In addition, ships sailing from non-British ports were not subject to the legislation. As a consequence, thousands of emigrants experienced a miserable and often dangerous journey. By 1867, regulations were more effective, thus providing people with the promise of a safe, if not comfortable, voyage.
The National Famine Monument at the base of Croagh Patrick in Murrisk, County Mayo, Ireland depicts a coffin ship with skeletons and bones as rigging. Sculpted by John Behan, it is Ireland's largest bronze sculpture. The "Coffin Ship" was unveiled by then President of Ireland Mary Robinson in 1997 to mark the 150th anniversary of the Irish Famine.