Almost every type of nautical experience is available in the islands, from old-fashioned Polynesian outrigger canoes to America's Cup racing sloops to submarines.

No matter which type of vessel you choose, be sure to see the Hawaiian Islands from offshore if you can afford it. It's easy to combine multiple activities into one cruise: Lots of snorkel boats double as sightseeing cruises and, in winter, whale-watching cruises. The main harbors for visitor activities are Kewalo Basin, Oahu; Honokohau, Kailua-Kona, and Kawaihae on the Big Island; Lahaina and Maalaea, Maui; Kaunakakai, Molokai; and Nawiliwili and Port Allen, Kauai.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.