The 55 metre superyacht Quinta Essentia, the largest vessel ever launched by the Netherlands’ Heesen Yachts, has been listed for sale for $100 million.

With sleek exterior lines by Frank Laupman of Omega Architects, the yacht’s most striking feature is a grand swimming pool on the aft deck complete with a waterfall.

The yacht has a very modern interior by Ken Freivokh Design and Michela Reverberi with metallic silver accents.

Kirsty Bertarelli, the richest woman in Britain and her husband Ernesto have bought the biggest motor yacht ever built in the UK, the 315-ft. foot Vava II.

The $160 million megayacht, which now ranks as the 33rd largest in the world, was built by Devonport Yachts in Plymouth and boasts luxury interiors, a helicopter landing pad, lavish guest cabins and four tenders.

Kirsty is a former Miss UK, while her husband is a Swiss pharmaceuticals magnate who has won the America’s Cup twice with his yacht Alinghi and is worth a reputed $10 billion, making him the 81st richest man in the world and the fifth richest in the UK.

More renowned for its prowess with wheeled vehicles, Toyota Motor Corp. is increasing its seaborne fleet with the launch of a new leisure boat, the Ponam-35.

But the 11.95-meter cruiser is still related to the car manufacturer’s mainstream products as its two V8-cylinder engines are adapted versions of the 4.5-liter V8 diesel engine that can be found in the Toyota Land Cruiser.

And while elsewhere it might be considered unusual for a car firm to dabble in pleasure boats, several of Japan’s other major auto firms also have boat divisions.

Pearl Motor Yachts, one of the UK’s leading luxury yacht builders, has announced a special collaboration with British interior designer Kelly Hoppen MBE.

Kellyis has been brought on board to design the luxury interior of the flagship Pearl 75, which will be launched in early 2012.

Kelly creates stunning interior designs for luxury homes, yachts and private jets for an ever-expanding international high-profile client base.

A Saudi sheikh left Roman Abramovich stranded at sea this week after taking the last megayacht berth at the so-called “Millionaire’s Quay” in Cap d’Antibes.

The Russian oligarch had wanted to moor his massive $800 million, 533-ft. yacht Eclipse, at the famed dock but arrived to find the only available spot had just been snatched by Saudi Arabian royal Prince Aziz al Saud.

According to Dailymail, the last space in Europe’s biggest yachting harbour simply wasn’t big enough for the two superyachts.

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.