Carr's water biscuits are sold as "table water crackers" in the United States. Several varieties are available.
In 1801 Josiah Bent began a baking operation in Milton, Massachusetts, selling "water crackers" or biscuits made of flour and water that would not deteriorate during long sea voyages from the port of Boston. The crackling sound occurred during baking, hence the name. This is where the American term "cracker" originated. His company later sold the original hardtack crackers used by troops during the American Civil War. These were commercial versions/refinements of the hardtack biscuits which had long been used by the British Royal Navy and other European navies.
Several versions of water crackers exist in ex-British colonies, such as Jamaica, where Excelsior brand water crackers are a popular breakfast/snack staple. They are often served with a spread, including a spicy pepper-and-herring paste called Salmagundi.