Waterwitch was once a a 'Thirty-Square-Metre' racing yacht built in 1937 by Uffa Fox to a design by Knud Reimers. Two brothers are determined to sail her to Ibiza for the summer despite losing her engine. Fox used his experience in Waterwitch to develop his design for Sea Swallow in 1938. The brothers used the experience to tell stories of horror and daring escapades The boat is recorded in Uffa Fox's 1937 book: 'Racing, Cruising and Design'. 'Thirty-Square-Metre' yachts are featured in Fox's 1938 book: 'Thoughts on Yachts and Yachting'. This is a record of two people taking on the elements and the Spanish navy.