Parts of the moats remain as well as the five bulwarks and the battlements. The English king strengthened the town's defences with robust bulwarks and a solid keep. The fortifications of Dokkum are well preserved and are known as the "bolwerken" (bulwarks). Militarily, they served as bulwarks against Portuguese and Burmese attacks. They have wide and deep cockpits, adaptable boomless rigs and high bulwarks. The gates were surrounded by bulwarks made of earth, used to mount artillery. The genoa has sheet tracks on the bulwarks and primary winches in the cockpit. He allows that religion has provided bulwarks, which are getting eroded. The cotton bales would be compressed into the space between the double pine bulwarks. There is abundant supply of stone for the fort's "bulwarks". The Portuguese responded with similar martial festivities in the city's bulwarks.