Whitmarsh High Performance Ribs Ltd design and manufacture luxury superyacht tenders and chase boats. With an extensive history in offshore powerboat racing and many years in the superyacht industry, James Whitmarsh is well placed to know that quality and performance are not enough by themselves to produce the Offering performance, style and comfort, every Whitmarsh tender is handcrafted to the clients’ requirements. ultimate luxury tender. Our passion for perfection, intelligent design, build quality and finish coupled with exceptional customer service meets all the requirements for guest and owner transportation. Each tender is customised to the clients’ individual requirements, style and detail. Current range from 6.25m–11.5m.