The Dutch shipyard Heesen Yachts applies the term “sportster” to its newest launch, Galatea. The 131-foot motor yacht is indeed sporty and features a low profile, and it retains the builder’s famous emphasis on speed. The all-aluminum vessel, which features svelte naval architecture and exterior design by Van Oossanen and Heesen, is engineered for a 27.5-knot maximum speed (while at half load) thanks to its twin MTU engines, which its owner will likely be putting to the test following its delivery at the end o…