“…The potential for windward sailing performance receives considerable attention in the discussion of ancient ships and seafaring (for example Gillmer, 1979; Hutchinson, 1994; Tilley, 1994; Casson, 1995: 273, 464; Greenhill, 1995; Roberts, 1995; Gifford and Gifford, 1996; Gifford, 1997; Wachsmann, 1998: 253; Weski, 1999; Greenhill, 2000; Whitewright, 2007). These authors all consider the effects of factors such as hull shape, rig‐geometry, mast‐position and the number of masts in order to explain how ancient boats were sailed, and what, if any, progress they could make to windward.…”