Celebrity Cruises' third ship back will be Silhouette, from the UK

This marks Celebrity Cruises' third ship scheduled to return, following Celebrity Apex from Piraeus starting June 19 and Celebrity Millennium from St. Maarten June 5.

Starting July 3 from Southampton

Celebrity Silhouette joins a growing flood of ships planning UK cruises. Sailing from Southampton, its first voyage is set for July 3.

Six- to eight-night cruises

The ship will offer six- to eight-night cruises with the chance to explore the Jurassic Coastline from Portland, discover the bustling Scottish cities and the highlands from Inverness, Kirkwall and Glasgow, uncover the rich history of Belfast and immerse themselves in the creative and cultural hub of Liverpool.

Travelers under 18 will need to show negative PCR test results.

Further health safety measures are to be announced.