Horse Sand Fort, Solent, Southsea - Portsmouth, City of (UA)

Horse Sand Fort is a circular 19th century Royal Commission sea fort lying in the Solent 3.6km south east of Southsea Castle. Horse Sand Fort was one of a chain of four sea forts in the Solent recommended by the Royal Commission on the Defence of the United Kingdom in 1860 and designed to protect Portsmouth dockyard from seaborne attack. The Fort also was armed during both World Wars. The Fort provides a visual reminder of the strategic importance of the Solent in the late 19th to earlier 20th century. The Fort currently has no sustainable use aside from occasional visitor tours.

Horse Sand Fort, Solent, Southsea - Portsmouth, City of (UA)
© Historic England

Site Details

  • Designated Site Name: Horse Sand Fort
  • Heritage Category: Scheduled Monument
  • List Entry Number: 1018588
  • Local Planning Authority: Portsmouth, City of (UA)
  • Site Type: Defence > Coastal defence site


  • Building Name: Horse Sand Fort
  • Locality: Solent
  • Unitary Authority: Portsmouth, City of (UA)
  • Parish: Southsea
  • Parliamentary Constituency: Portsmouth South
  • Region: South East

Assessment Information

  • Assessment Type: Building or structure
  • Condition: Poor
  • Occupancy / Use: Vacant/not in use
  • Priority: C - Slow decay; no solution agreed
  • Previous Priority: C
  • Ownership: Commercial company