Better yet, buy a yacht and register it in the Marshall Islands.
This one will do (given the times, a bullet proof hull is a necessity when you have a 1500 mile range):

Although its looks are classic motor-yacht, the Marlow 70E has high-tech construction and high-end performance.
The
Marlow Explorer series of yachts are built with a sophisticated resin-infusion process that uses lightweight, bulletproof materials like Kevlar to create a strong and easily-driven hull. The 70E Command Bridge version can run as fast as 25 knots, cruise at 23 knots, or glide along at just over eight knots, burning nine gph at this slower speed, for a range of more than 1,500 nautical miles. Power comes from twin Caterpillar C-18 diesels. Apart from eliminating useless weight in the structure, the fabrics and resin infusion provide a stiffer, stronger, and more durable hull.
It has a sumptuous dining area for up to eight people, just forward of the U-shaped galley. Another option is to have the expanded galley forward, with the dinette in the aft part of the pilothouse deck. The enclosed command bridge has its own L-shaped dinette aft of the helm and a wet bar and dedicated fridge will ensure that the captain doesn’t lack for refreshment.

Craftsmen at the Marlow factory create the interior woodwork, from log to final finish.
Aft of the command bridge there’s plenty of deck space for a sizeable tender. I saw one 70E with a Boston Whaler 130, which fit comfortably.
Here is a used one that is currently on the market: