"Wear Ship" actually has relevance today with modern pleasure sailboats. In very light air (e.g., <1 kt), wearing ship can be more efficient and faster than trying to tack. In the later case, getting stuck in irons is often the result.
I learned the effectiveness of wearing ship last summer in a race. The capt of the boat on which I was crewing did it with great result. Blew me away. Ya can always learn something.