He also strengthened existing coastal defence fortresses such as Dover Castle and, at Dover, Moat Bulwark and Archcliffe Fort, which he personally visited for a few months to supervise.
他因此加強海岸防卫堡垒，如多佛堡和多佛的 Moat Bulwark 和 Archcliffe Fort，甚且亲自监管数個月。