In The Wake Of The Wind Ships

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The Joint Ocean Wave Investigation Project (JOWIP) was conducted to evaluate the detectability of ocean wave structures on imaging synthetic aperture radar (SAR). This project used Kelvin surface ship wake patterns generated under controlled and well documented surface environmental conditions to isolate SAR image parameters. Use of waves of known wavelength and direction provide the opportunity to evaluate the SAR contribution to ocean wave forecasting. SEASAT-like images made with L-band SAR are presented: (1) to suggest how ship-generated surface roughness combines with the velocity-bunching mechanism in calm ocean areas to produce the unusually narrow wakes observed for azimuth-traveling ships on SEASAT images; and (2) to estimate conditions under which SAR image modulation mechanisms can be expected to produce wake images. A method is described for using the Kelvin transverse ship wake wave component to quantitatively evaluate the contributions of various SAR ocean wave imaging mechanisms. It makes use of the narrow sector of surface roughness generated by a ship along its track to produce SAR images of the longest waves in its wake system on flat calm water.

This book is a tribute to the last days of the great merchant sailboats and their crews from a unique photographic talent. The photographic work of Alan Villiers is arguably the most important photo-historical record of early 20th-century maritime history. In capturing on film life aboard the last of the great merchant sail ships, he has provided us with a singular record of the end of an era. These powerful images, published for the first time in this volume, date from the late 1920s through the 1930s and were taken aboard the three ships Villiers worked on during this period: the Herzogin Cecilie, the Grace Harwar, and the Panama.

It’s almost impossible to imagine spending eight months at sea “without once putting foot on land.” But that’s exactly what whalers experienced when playing the dangerous “game of chance,” hunting down leviathans for oil and bone—all for a “lay,” or share, of the vessel’s spoils. A Game of Chance is the first comprehensive, in-depth study of British North American South Seas whaling. Author Andrea Kirkpatrick takes readers on a series of fascinating and sometimes fantastical journeys as she chronicles in great detail the story of a largely forgotten industry that operated out of Nova Scotia and New Brunswick ports from the 1760s to 1850. Kirkpatrick plumbed the depths of myriad logbooks and journals to piece together the often-murky tales of an astonishing number of ships. In this treatise covering a century of whaling, she shares details such as ownership, tonnage, voyages, captains’ pedigrees, and names of crewmen, including nascent whaler Herman Melville, author of Moby-Dick. Hoping for “greasy luck,” the men who manned these ships found both camaraderie and competition as they hunted the world’s whaling grounds from Cape Horn to Kamchatka, many circumnavigating the globe during their careers. They battled squalls and high seas, scurvy and venereal disease, heartbreak and homesickness—and sometimes each other. Many never returned home, their bodies committed to the deep or buried on foreign land. Written in two parts—landward and seaward—Kirkpatrick’s clear prose and adoption of whaling lingua franca brings this high-risk venture to the fore with authenticity, newly revealed facts, and remarkable stories of adventure.

"Vive la Revolution!" was the theme of the Twenty-Third Symposium on Naval Hydrodynamics held in Val de Reuil, France, from September 17-22, 2000 as more than 140 experts in ship design, construction, and operation came together to exchange naval research developments. The forum encouraged both formal and informal discussion of presented papers, and the occasion provides an opportunity for direct communication between international peers. This book includes sixty-three papers presented at the symposium which was organized jointly by the Office of Naval Research, the National Research Council (Naval Studies Board), and the Bassin d'Essais des Carènes. This book includes the ten topical areas discussed at the symposium: wave-induced motions and loads, hydrodynamics in ship design, propulsor hydrodynamics and hydroacoustics, CFD validation, viscous ship hydrodynamics, cavitation and bubbly flow, wave hydrodynamics, wake dynamics, shallow water hydrodynamics, and fluid dynamics in the naval context.