What: U-Boat Worx Super Yacht Sub 3
How much: 2.35 million eurosHK$22.7 million
WHY: The luxury private submarine, from Dutch submersible manufacturer U-Boat Worx, can venture as deep as 300 metres underwater, and is so compact (3.2 metres long) and lightweight (3,800kg) that it can fit on the deck of most superyachts. Manufactured in the Netherlands, the yacht can accommodate three people (a pilot and two passengers).
It features an acrylic pressure hull that…