The grand prize includes a cabin aboard an "Apprentice"-theme cruise next month.
Visitors can also explore Stockholm's waters on full-day theme cruises with expert guides.
The "theme" cruise, as it is often called, has become a staple of the industry.
Hence, the theme cruise is a selling point to passengers who want to avoid feeling that they will get a cookie-cutter experience on their vacations.
Most of these theme cruises are listed in cruise line brochures or you can ask your cruise consultant to check on them.
The voyage of the Beagle could be regarded as the father of the educational theme cruise.
This season will see an increase in "theme" cruises.
Other entertainers, athletes, lecturers and authors will preside over the many theme cruises throughout 2000.
Silversea are offering unique, culinary theme cruises featuring award-winning chefs.
Special theme cruises include dinner and dancing, wine tasting or a trip to a local berry farm.