Set Sail with The Mark This Summer The Mark Sailboat is now booking private New York Harbor cruises. Courtesy of the Mark Hotel Experience New York from a new vantage point on The Mark Sailboat this summer. If you’re taking your first city break in awhile—or enjoying a staycation closer to home—The Mark Hotel is now booking private charters for guests, friends, and Upper East Side neighbors on its ultra luxurious sailboat. Featuring a solid mahogany hull, Indian teak decks, and the hotel’s signature black and white stripes on its customized sail and cushions, the 70-foot Herreshoff sailboat is an uptown mood. It was originally built in 1921 by Nathanael Greene Herreshoff, a naval architect who designed six America’s Cup defending yachts and whose designs are are known for balancing style and scientific engineering.