Images © Van Oossanen & Associates b.v.

We completed detailed design work in November 2004 for a new keel with a pronounced bulb and winglets for the 37m Lady Sunshine, a Jongert built some 15 years ago. For this project we were asked to study various alternatives in order to determine the least-cost option with satisfactory performance. This turned out to be a keel with a pronounced bulb fitted with relatively large winglets. Allthough both a lifting keel (with a bulb and winglets) and a keel with a trimtab showed to yield slightly better performance levels, the additional cost associated with the retrofitting of these alternatives was considered to be too great for the associated performance gain.

For more information see also www.jongert.nl