The catamaran cuts through the pale Caribbean like a measured breath. Early light fractures over Grace Bay, the water alternately glass and mint; the boat’s rooftop becomes a warm platform where travelers tilt back and let the ocean decide the pace. Over the next seven and a half hours the shoreline peels away into small cays and protected reef gardens — each stop a different way to meet these shallow, bright seas: floating above coral bommies, wading onto powder-white sand, or drifting near a low, scrubby islet where rock iguanas watch without surprise.