Carnival Corp has extended lay-up of its Cunard fleet well into the summer and beyond as a result of the continued impact of Covid-19.

The luxury cruise brand with three vessels has postponed sailings of 2,691-berth Queen Mary 2 (built 2003) and 2,061-berth Queen Victoria (built 2007) through 31 July.

Its 2,081-berth Queen Elizabeth (built 2010) will stay at anchor through 8 September, effectively cancelling the vessel's entire Alaska season.