Matson was also president of the Oceania Swimming Association from its inception in 1991 until 2008.
Matson was elected to Fina in 1996 and 2000 as a member of 22-strong Fina Bureau. In 2005 and 2009, he was elected to the Bureau as vice president. Matson was also Fina's protocol officer from 1997-2009.
"Bill's achievements are many and varied in this sport," Coulter said. "More importantly, while Bill was exacting in ensuring things were done perfectly, he was always a man of the people, happy to play a role on pool deck and to provide encouraging advice to anyone who sought it."
Matson's sudden death was a great loss for Fina and Oceania, the Fina statement said: "Bill's example and devotion for the aquatic sports will remain a reference in our mind and heart."
Matson is survived by his wife Joan, two children and four grandchildren.
- NZPA