The Voyages of Discovery Cruise Ship carrying 900 passengers on board on January 21 began a tour of Vietnam from Ho Chi Minh City to Nha Trang, Danang and Halong.
Passengers mainly from the UK will stay in Vietnam until January 27.
On January 24, another Cruise Ship, the Spirit of Adventure, with 800 passengers on board will conduct a tour of Vietnam going the opposite way from Halong to Danang, Nha Trang and Ho Chi Minh City.
These are the first two ships to have docked in Vietnamese ports in 2010.