Peter van Oossanen has completed the 4thvolume of “The Science of Sailing”. The sub-title of this book is “Phenomena and Drag Originating from the Air-Water Interface”. It may be ordered from The Van Oossanen Academy website: www.vanoossanenacademy.nl.

Part 4 of the series “The Science of Sailing” covers the phenomena and drag that arise from the fluidity of the water surface. Topics that are dealt with are wave causation, the wave pattern generated by the hull, wave drag, running trim and sinkage/rise, breaking waves, spray, wind-generated waves and spectra, motions of sailing yachts, wave-added drag, surfing behaviour, cavitation, ventilation, and the effects of limited water depth.