James Martinus "Ding" Schoonmaker (June 10, 1933 – January 19, 2021)[1] was an American sailor.

He won the 1975 Star World Championship together with Jerry Ford.

Schoonmaker was inducted into the National Sailing Hall of Fame in 2018.

[3] Schoonmaker died on January 19, 2021 at the age of 90.

This biographical article related to sailing in the United States is a stub.