Foreign vessels have also visited the city over the years, including a historic trip by US aircraft carrier USS Harry S Truman back in 2018.
We have had a look back through our picture archive, and Getty Images, to find some historic pictures of Royal Navy and foreign aircraft carriers visiting Portsmouth over the years.
MORE RETRO PHOTOS: Portsmouth in 1980 | The life of a sailor in Portsmouth | Eastney Barracks

5. USS Harry S. Truman
Sightseers take photographs of the US warship USS Harry S. Truman, anchored in the Solent on October 8, 2018 near Portsmouth. Photo: The News archive

6. HMS Courageous
HMS Courageous entering Portsmouth Harbour in 1939 Photo: The News archive

7. Aircraft carriers in Portsmouth
Portsmouth harbour entrance with an aircraft carrier somewhere between 1937 - 1940 Photo: The News archive