The Royal Navy's only ocean survey vessel, HMS Scott, has paid a rare visit to Portsmouth.
The ship was last in Portsmouth for a refit in 2009 and a crowd gathered to watch her arrival on Saturday.
Named after explorer Robert Falcon Scott, she can remain at sea for up to 300 days a year, thanks to her crew rotation system.
She was commissioned on 20 June 1997 and spends most of her time in the South Atlantic.
The ship is the largest vessel in the Royal Navy's Hydrographic Squadron and the largest survey vessel in western Europe.
Since April, HMS Scott has been through a mild revamp at a shipyard in Falmouth before returning to her survey work.