Wiktionary
hellburners
n. (plural of hellburner English)
Wikipedia
Hellburners
Hellburners ( Dutch: hellebranders; brander is Dutch for "burner") were specialised fireships used in the Siege of Antwerp (1584-1585) during the Eighty Years' War between the Dutch rebels and the Habsburgs. They were floating bombs, also called "Antwerp Fire", and did immense damage to the Spanish besiegers. Hellburners have been described as an early form of weapons of mass destruction.