Although not enforced in modern times, this law is still on the books. In fact, there is an annual ceremony of the Constable’s Dues, where the Royal Navy moors one of its boats alongside the Tower Pier and the captain delivers his “tax”.
Many stupid laws have to do with advancing technology. To mention just one: a provision in a code concerning the military, dating back to 1939, regulates “beasts of burden (horses, oxen, dogs, etc.)” that can be requisitioned “for vehicles employed by the army”.
Even though Congo achieved independence in 1960, the King of Belgium is still officially authorized to mobilize the military in ‘Belgian-Congo’, as well to ensure the protection of the country’s citizenry in the event of war. In times of peace, the King may even take such measures proactively.