In 1990 Filippo Theodoli died, leaving the Magnum boatyard to his wife Katrin.

Because Katrin loved Magnum, because she felt an enormous responsibility towards all those who had been working with Magnum for so many years, and lastly because she was irked and challenged by being told that no woman could ever run a boat company, she decided not to sell Magnum Marine and to keep her husband’s legacy alive.

Whilst she secretly learned how to drive a boat, she thought about designing her new and ideal Magnum. She consulted with Pininfarina and other designers such as Paolo Martin and the Brazilian Luiz de Basto.

In 1993, three years after Filippo’s death, she launched her first new model, the Magnum 50’ “Bestia” or “the Beast”.

This boat was unbelievable and Katrin tells the story that, when she first took the new Magnum 50’ for a test run and photo shoot with a helicopter overhead, she ran into enormous gale force winds and huge waves. She put her hand on the throttles to see what her new boat would do; the acceleration gave her a jolt - it was like taking off with supersonic speed - and the speedometer showed 72 MPH. But, at the same time, the ride was smooth and comfortable. The Magnum sliced through the waves and felt as if she were driving on a flat highway. After the photo shoot, the photographer said:

I have photographed many boats, but I have never seen such a performance in rough seas. She’s not a boat, she’s like a beast.

The interiors of the new Magnum 50’ were designed for Katrin by the French House of Hermes. HM the King of Spain immediately ordered one of Katrin’s new Magnum 50’ power yachts.

In 1999, Katrin developed a new Magnum 44’ designed by Luiz de Basto, one of the most admired vessels of the new Magnum fleet.

There are many Magnum 44s in St. Tropez and the story was told that a Magnum 44’ with its deep-vee hull at high speed once sliced another boat in half…no one was hurt, but it clearly proved the strength of the Magnum hull.