The Dunia Baru -- an entirely hand-built phinisi sailing ship -- whisks guests on a breathtaking journey through the remote waters of Indonesia's Raja Ampat. Duna Baru Morning breaks gently in West Papua. After a breakfast of spicy curry and unfamiliar fruits, guests step onto a skiff loaded with paddleboards and dry bags, then skim across glassy waters toward Pianemo, an archipelago of limestone dollops rising straight from the sea, their sides swaddled in dense jungle. With every paddle stroke, the color beneath shifts from cerulean to teal to aquamarine — so clear that coral heads and darting fish appear suspended in midair. The channel narrows, spilling into a freshwater swimming hole as cold and pristine as New Zealand’s Blue Lake. In the middle of the Western Pacific, the only witnesses are two locals in feathered crowns and grass skirts, their faces painted, their smartphones discreetly stealing photos.…