Roger Taylor's long-running sailing site documents minimalist ocean voyaging aboard the tiny junk-rigged Mingming boats, including Arctic passages far beyond the usual cruising map.
David Omick's site is a long-running technical notebook for practical low-cost systems: composting toilets, experimental building methods, sailing projects, and the Minimus boats, all documented in the plain old personal-Web tradition.
Joe Wolfe's University of New South Wales sailing page uses Newton's laws, vectors, apparent wind, keel forces, and eighteen-foot skiffs to explain how sailboats move upwind and sometimes faster than the wind.