Cunard Adventurer and Ambassador were aquired by Cunard Line in 1971 from ONA (Overseas National Airlines. From the outset it was clear that these vessels were not suitable for Cunard's requirements and as a result their life with the line was short lived.
The two liners were the first of the line's vessel's in the 20th century to bear a name that did not end in "ia" or begin with "Queen"
In 1977 Cunard Adventurer was sold to Norwegian Cruise Line and was renamed MS Sunward II. She enjoyed many happy years with NCL. Afterwards in the 1990's continuing a long and successful life, she became Triton for Epirotiki in Athens. In 1974 The Ambassador caught fire on a positioning trip. There were no passengers on this trip, and had no fatalities involving the crew. After being towed to Key West, she was declared a total loss. Although the Cunard line declared her a total loss, the Danish didn’t think so. She was purchased as a gutted hull, and was refitted to become the Danish sheep carrier, Linda Clausen later the same year. After serving as the Linda Clausen for about six years, she was transferred again. In 1980, the Linda Clausen became the Procyn, and then in 1983, she became the Raslan.