Cunard is further extending the cancellation of cruises until November, blaming the continued impact of Covid-19.
Flagship Queen Mary 2 and Queen Victoria will have sailings cancelled until November 1 and Queen Elizabeth until November 23.
The extension follows sister brand extending its pause in operations until October 15.
Cunard will be communicating with all passengers, and their travel agents, who are booked on affected voyages.
Passengers booked on cancelled cruises will automatically be given a 125% future cruise credit which can be redeemed against any new booking made by the end of December 2021 on any voyage on sale at the time of booking.
Cunard president Simon Palethorpe said: “With many differing restrictions across countries, people’s ability to move freely and safely across borders remains seemingly someway in the distance.
“For Cunard, where we celebrate having a truly international mix of guests and sail all over the world, this becomes particularly impactful. We also need to better understand the implications Covid-19 will have on board our ships.
“We are therefore working, at the highest level possible, with government bodies, including the US Centers for Disease Control and Prevention – the CDC – and Public Health England, as well as the industry collective body – Clia – and other expert medical professionals to review every aspect of a holiday with us.”
He added: “Whilst we have always taken pride in having the highest levels of health and safety we are looking at enhanced protocols across all aspects of ship life and experiences on shore.
“We will only return to service when we have a comprehensive restart protocol with the stamps of approval and accreditation from the most trusted and informed sources.”