Guernsey, along with Alderney and Jersey was one of the three Channel Islands considered as a Harbour of Refuge for the Royal Navy in 1850. The intention was to have a secure anchorage for the Royal Navy position a fleet in the event of war with France. In the end Alderney was chosen as the location to build this Harbour of Refuge. Nevertheless, Guernsey had a number of fortifications which were improved during the 19th Century.
