Fish-hookers (or fishing hookers) resembled ketches with their sail rigging as they had a main and a mizzenmast. The lower mast and the topmast were so fitted to each other, joined by bolts and tied together, that they looked as a mast made of a single piece of wood. The mizzenmast was small and had a topmast fastened with the help of the top cross-tree and the top cap. On big ships a topsail was hanged at this topmast. A mizzen yard or a gaff carried the mizzen sail. The mainmast shrouds were moved far to the stern. The main halyard was lowered down behind the main hatch to the halyard bitts and it was provided by a block. The main mast carried 2 - 3 square sails and it was sufficiently for the bowsprit stretched to the main mast together with the jib-boom to install 2 or 3 staysails. Sometimes there was a blind under the bowsprit. Fish-hookers were used as fishing vessels at the North European coasts and on the Dogger shoal. Fish-hooker rigging can be met also on Holland trade hookers of the 18th century.