No Man's Land Fort, also referred to as No Man's Fort, is a sea fort in the Solent, near Portsmouth, England. It is one of the Palmerston Forts built between 1867 and 1880 after the recommendations of the 1859 Royal Commission. It is 200 feet in diameter, and lies 1.4 miles off the coast of the Isle of Wight.

Horse Sand Fort is one of the larger Royal Commission sea forts in the Solent off Portsmouth, Hampshire, England. The fort is one of four built as part of the Palmerston Forts constructions. It is 200 feet (61 m) across, built between 1865 and 1880, with two floors and a basement and armour-plated all round.