Directory of Cruise Lines

Royal Caribbean International cruise lines feature the largest ships at sea and also the most activity-filled.

The most traditional of the major cruise lines, Holland America still has formal nights and assigned seating, which some couples consider a key part of the cruise experience.

Originator of "freestyle cruising," Norwegian Cruise Lines has more restaurants per ship than other cruise lines and encourages passengers to eat where, when, and what they want onboard.

These smaller ships are elegantly furnished, feature many luxurious touches, and sail to interesting ports.

Well known for their Alaskan cruises and on-land excursions, Princess Cruises sails to the Caribbean and many other ports as well. It is the only cruise line that is permitted to hold onboard weddings, which are officiated by the captain.

High-energy cruises attract a young crowd.

Disney Cruises has set aside several areas exclusively for adults, Find out here where they are.

As tasteful as a four-star hotel, Regent Seven Seas Cruises (formerly known as Radisson Seven Seas Cruises) treats guests well and prides itself on serving fine cuisine.

Italian line provides a Continental, multi-lingual experience.

Fleet includes the classic Queen Elizabeth 2, sailing transatlantic voyages. Free one-way airfare is included in the price.

About.com's Guide to Student Travel introduces the benefits of no-frills, hop-on, hop-off EasyCruise, sailing Europe and the Caribbean.

Relax! If you're a guest, helping to hoist the sails is optional on these sailing ships.