Boatloads of fun: leisure-pool amenities have taken to the seas as luxury liners woo families.(CRUISE SHIPS)

It used to be, you sailed the high seas. But with cruise ships offering more leisure-pool amenities, you can also surf it.

Along with surf machines, water slides, spraypads, play features, surfing rides and other leisure-pool amenities are popping up on board. But to achieve the family atmosphere without the headache, ships also are offering private spots for adults, teens and kids only.

When Royal Caribbean International's Freedom of the Seas makes its maiden voyage in June, guests can surf or boogie board.

In addition to its surf park, Royal Caribbean is introducing the "H20 Zone," a family wading pool with spray cannons, jets, gushers and colorful sculptures that spray water. Guests can also float around a lazy river circling a central island. The ship's youngest voyagers can play in a wading pool fed by a flamingo-shaped fountain. And for adults only without a fear of heights, two large hot tubs cantilever out 12 feet from the sides of the ship, suspended 112 feet above the ocean for breathtaking views and relaxation.

The cruise line's Enchantment of the Seas ships will feature an interactive touch-pad Splash Deck, with 64 water jets. At night, the deck transforms into a fountain-and-fiber-optic light show. In addition, its pool deck juts out over the ocean, with floor windows that look down on undulating waves.

Other cruise lines are offering their own take on leisure pools. On Disney Cruise Line, kids can slide past Mickey's giant gloved hand and splash down into Mickey's face. The ears are shallower wading pools designed for smaller children. A fountain play area with popping jets is a special treat for little ones who wear swim diapers. And a ...