Holland Jachtbouw has launched 42.6m (140ft) Topaz at its shipyard in Zaandam, on the outskirts of Amsterdam. Previously known by her project name J8, she comes from the drawing board of Hoek Design and had been built with a reduced wetted surface and higher keel aspect ratio to the longest waterline length yet to be seen in a J. Her launch brings the J Class Association’s fleet to eight boats on the water.

Topaz is now about to undergo commissioning sea trials with the project teams from HJB and Cornelsen and Partner, the project managers, as well as the naval architects from the Hoek office.

This latest J is based on the original lines plans from Frank Paine in the 1930s. Hoek Design devised a special software programme to compare all the J designs from the 1930s.

“When Frank Paine originally drew this vessel in 1935 he was prepared to take a sail area or displacement penalty in order to gain the extra length required,” explained Andre Hoek. “By optimising the design for the modern handicap rules of the JCA, we paid enormous attention to J8′s stiffness to weight ratio and lightweight aluminium hull. Taking all our experiences into the equation too, I think it is safe to say that J8 will be spectacular in every sense.”