Seabourn launched its 450-passenger Quest in June 2011 - the third in its series of megayachts and the same design as its two sisters, Seabourn Odyssey and Seabourn Sojourn. The focus throughout is on contemporary design and soothing textures of leather, silk and soft gauze in creams, whites and beiges, with touches of buttery yellow, chocolate and burnt orange.

Cabins, needless to say, are extremely luxurious, most with private balcony and all with magnificent bathrooms, featuring a full-sized tub and rainforest shower. They're designed for in-suite dining, so if you want a quiet night in, waiters will serve dinner course-by-course.

Seabourn Quest is at its best in sunny climates and a focal point is the beautiful pool deck, surrounded by teak, with the pool itself designed so you can dangle your feet in the water while accepting a cocktail from a passing waiter. There's a pool grill, too, with its own pizza oven and lunchtime fare of gourmet burgers and salads. In warm climates, there's a special treat ashore; everybody is ferried to a deserted beach and waiters serve champagne and caviar in the surf.

Back on board, one of the best features of Seabourn's three ships is Seabourn Square; instead of an atrium or a formal lobby, this is a comfortable lounge area that combines the library, reception, the Internet cafe and a patisserie, which does a roaring trade in cappuccinos and croissants in the mornings and later, in cocktails. On deck five is another exciting feature, The Club, a nightclub after dark with a small pool and two hot tubs.

Dining on board is in The Colonnade, a stunningly presented buffet by day and a romantic la carte restaurant at night, or in the elegant main dining room. You can also eat in the reservations-only Restaurant 2, which offers gourmet tasting menus. Our opinion' An elegant, fun and delightful ship, one of the finest in the ultra-luxury category.