SOLO travellers who book by February 28 with Cruiseco can enjoy savings on a selection of reduced or no single supplement fares on select twin cabins and suites with Fred Olsen Cruise Line. For example, sail on the 880-guest Boudicca on a 14-night Southampton return voyage "In search of the Northern Lights" via Alesund, Tromso, Alta, Bodo and Bergen departing March 8, single fares start from $2958. Or cruise the Norwegian fjords aboard Balmoral from Southampton return for 11 nights departing May 6. Single fares start from $2878. On-board gratuities are additional and payable on board.