Traditionally, the hull was built of oak and the deck was pitch pine.
Despite having a flat bottom and curved sides, they were quite stable.
Its draught was 10.5 feet (3.2 m) and when fully loaded, could carry 250 tons.
[4] Most Mersey flats had been converted to dumb barges by the end of the 19th century, towed by horses or by steam tugs.
[4] This article about a type of ship or boat is a stub.