The term has also been used to refer to the ships that carried Irish emigrants escaping the effects of the potato famine as well as displaced Highlanders due to the Highland Clearances. These ships, crowded and disease ridden, with poor access to food and water, resulted in the deaths of many people as they crossed the Atlantic. 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, often many of the passengers died during the voyage. It was said that sharks could be seen following the ships, because so many bodies were thrown overboard.
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.
In the Pogues song "Thousands are sailing", the ghost of an Irish immigrant laments, "...on a coffin ship I came / And I never even got so far that they could change my name."
Additionally, the Irish metal bands Cruachan and Primordial both have songs entitled "The Coffin Ships". Primordial's version was released on their 2005 album The Gathering Wilderness, whilst Cruachan's (unrelated) song was written for their 2007 album, The Morrigan's Call.
Irish poet Eavan Boland mentions the coffin ships in her poem "In a Bad Light" from the collection In a Time of Violence, and in her memoir Object Lessons: The Life of the Woman and the Poet in Our Time.
Leon Uris also refers to death ships in his novel "Redemption".
The Death Ship (German title: Das Totenschiff) is a novel by the pseudonymous author known as B. Traven which deals with this subject in great detail.