Described by Boat International as “one of the world’s most amazing super yachts, that could spell the future for efficient long range cruising”, the striking 42.5m Trimaran Adastra is currently under construction at McConaghy Boats in China.

This one-off trimaran designed by John Shuttleworth is being built for Hong Kong clients Anto and Elaine Marden with interstellar voyages in mind.

Harrods has teamed up with specialist London brokers Watkins Superyachts to offer their most expensive product ever – a £100-plus million motor yacht.

During the month of May three remarkable window displays will feature models, images and details of a unique and exclusive range of yachts.

There will also be specialist in store representation throughout the month, together with tailored direct marketing to the Harrods customer database.

The super-luxe 73.5-metre superyacht Sapphire launched by Germany’s Nobiskrug last year has been listed for sale via Edmiston for $110 million.

The elegant steel displacement yacht with sleek exterior lines courtesy of Newcruise Yacht Projects of Hamburg is a pleasure craft fit for a billionaire with luxurious accommodation for 12 guests in six cabins along with 8 crew, with an emphasis on spaciousness throughout the well-appointed interior.

A hydraulically-retractable touch and go helipad on the aft deck provides the owner and friends a stylish way to arrive on board.

The 73.5-metre Silver Zwei, the world’s fastest long-range superyacht built by Hanseatic Marine, has been listed for sale via Burgess for €59 million.

Krass actually established Hanseatic in Australia specifically to build the sleek yacht to his exacting specifications.

Silver Zwei claims to be the fastest long distance cruising yacht in the world with trans-Atlantic range at 22 knots.

Turkey-based Dream Ship Victory (DSV) has signed a contract to begin new 141-meter sailing superyacht, destined to become the world’s largest.

Now a construction schedule is slated to begin this summer with a five-year build plan, making for a launch date of 2016.

Naval architects Dykstra & Partners and Ken Freivokh Design collaborated with DSV’s Valeriy Stepanenko on the Art Deco-inspired all-wood yacht.

Steven Spielberg is offering his new $200 million megayacht as the world’s most expensive yacht charter at an eye-popping rate of $1.3 million per week.

Built by Dutch shipyard Oceanco, the ultra-luxe craft features an elegant and tasteful interior design scheme by Nuvolari & Lenard.

Its most striking feature is an infinity pool with a 15-foot glass wall that doubles as a movie screen so you can watch your latest production while swimming.