Necker Belle yacht has a top speed in excess of 20 knots, being rare in the world as being able to do so. The Necker Nymph excursion submersible also operates from the yacht. It is reputedly the first-of-its-kind "aero submarine", buoyant when not under power. Necker Belle The Necker Belle is a 105-foot (32 m) private charter catamaran yacht, offered through Virgin Limited Edition and based at the resort Necker Island. The "Belle" superyacht is one of the few luxury sailing catamarans in the world. Prior to being purchased by Richard Branson's Virgin, the yacht was called "Lady Barbaretta", and cost £5.3
Louis Necker his wife Isabelle André, whom he had married in 1752 and came from Marseille. In 1761 he was forced to resign from his professorship after a scandal (Vernes-Necker case). In 1762 with the help of his brother he was appointed in a trading house in Marseille and added to his last name de Germany, after the family estate near Rolle. He was dropped from the Académie des sciences's list of Corresponding Members in 1767. In 1770 he moved to Paris. In 1772 he became a banker at . In 1773 he remarried. Between 1774 and 1778 he must have been