Palmerston forts
There are a few Triangulation Stations located on or within Palmerston Forts. These are fortified sites constructed during the late 19th century when there was a perceived threat of invasion by France. The forts were generally sited at or near the coast to protect vital harbour installations. They are named after the then Prime Minister, Lord Palmerston, and are sometimes known as Palmerston Follies due to the early forts constructed to protect Portsmouth having their guns facing inland to guard against a land attack; or due to the fact that the invasion never happened therefore the guns never fired in anger.
Bagging these trigs often involves a degree of difficulty due mainly to access issues, which adds to the fun of the sport. Ticking off all of them is a challenge:
| T:UK | Station name | Type | Grid Ref | Condition | Notes |
|---|---|---|---|---|---|
| TP8116 | Bembridge Fort | Pillar | SZ 62384 86123 | Toppled | Access may be possible via National Trust tour |
| TP751 | Bembridge Fort | Surface Block | SZ 62384 86122 | Good | Base of former pillar. Passive station T1SZ6286 |
| TP2639 | Crown Hill Fort | Pillar | SX 48654 59197 | Good | Site owned by Landmark Trust; trig accessible on Open Days |
| TP3027 | Egg Buckland | Pillar | SX 50017 58087 | Destroyed | Replaced by Buried Block 06/56 |
| TP3232 | Fort Borstal | Pillar | TQ 73323 66443 | Good | Private. Pillar may be visible from a distance. |
| TP21064 | Fort Fareham | Bolt | SU 57290 05002 | Good | Possibility that that the item found is Witness mark. |
| TP3234 | Fort Gilkicker | Pillar | SZ 60741 97520 | Moved | Moved to site entrance pending further relocation |
| TP11618 | Fort Hubberston | Surface Block | SM 89100 05562 | Inaccessible | Located in dense impenetrable vegetation. |
| TP21065 | Fort Nelson | Block | SU 60622 07098 | Inaccessible | Possibly a Buried Block |
| TP3235 | Fort Purbrook | Pillar | SU 67923 06434 | Good | Accessible by permission |
| TP21103 | Fort Purbrook Auxiliary | Block | SU 67864 06508 | Destroyed | Destroyed 10/77 |
| TP3236 | Fort Rowner | Pillar | SU 59388 01126 | Good | Access may be possible on Heritage Open Days |
| TP3237 | Fort Scoveston | Pillar | SM 94336 06635 | Good | Dense vegetation |
| TP3238 | Fort Southwick | Pillar | SU 62737 06949 | Good | Access issues |
| TP6348 | The Bastion | Pillar | SU 65207 04393 | Good | Access may be blocked by fence |