Koos de Jong
Jacobus Hermanus Hendrik Jan "Koos" de Jong (7 April 1912 – 20 August 1993) was a
sailor from the
Netherlands. He competed in the
Firefly event at the
1948 Olympics and in the
Finn event at the
1952 Games and won a bronze medal in 1948, placing fourth in 1952. De Jong won several medals at European championships, including the gold in 1959.
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