The story behind the A13
The A13 was built by Archambault, a French boat-building firm with a long and illustrious history. Successful models most recently included the M34 and the A35.
The principal designer behind the A13 was Bernard Nivelt. Production started with the first prototype in 2014, which became Teasing Machine.
It was intended to be a series production boat and brochures were prepared on their web site and the press reviewed the new design:
The design below the water line has several key features. Firstly the hull is very wide, giving high form stability. This allows the keel to dispense with a large bulb; it has a straight design with uniform profile. The wide flat hull also gives good planing performance. Finally, the boat has twin rudders, giving better control in offshore conditions.
The prototype differed from the model shown in the brochure in several key respects, including the interior. The brochure shows several possible configurations, all conventional cruiser-racer layouts.
The actual layout of Phosphorus II is far more adapted for offshore racing with multiple pipe cots and a simplified galley + nav station layout.
Unfortunately Archambault were having financial difficulties and went into liquidation in early 2015 so no further A13s were ever made: