History
| LOI | |
| Building contract | |
| Building started | |
| 12/4/1988 | Keel laid as Soviet satellite tracking ship Akademik Nikolay Pilyugin. |
| 23/8/1991 | Launch |
| aut/1991 | Work stopped on shipyard. Laid up for sale. |
| 1997 | Towed to T.Mariotti shipyard, Genova, Italy. New name Blue Sea. |
| 25/8/1998 | Sold to Radisson Seven Seas Cruises, Hamilton, Bermuda. |
| Sea trial | |
| Second sea trial | |
| 25/8/1999 | Delivered to Celtic Pacific Two, Hamilton, Bermuda. Radisson Seven Seas cruises. New name Seven Seas Navigator. |
| 6/2001 | Maiden voyage |
| 2006 | Operated Regent Seven Seas Cruises. |
| 10/2011 | Bahamas flag. |
| 3/2013 | Owner Navigator Vessel Co LLC. |