Among the Great Britain contingent will be helmsman Jeremy Davy and crew Martin Huett, who finished second at the 2015 world champs in France.
Six years ago Robinson raced at the Great Britain-hosted world champs with clubmate David Zorn who he will team up with again during the next 10 days.
Napier mayor Bill Dalton urged the international visitors to enjoy the city.
"Enjoy it so much you want to come back."
Napier MP Stuart Nash, a former club member, pointed out his father was a Flying Fifteen class sailor for many years.
"To dad sailing was about his friends."
Lexus of Hawke's Bay CEO Angus Helmore said the event aligns well with his organisation.
"It is about innovation, excellence through working together and supporting the Napier Sailing Club, which plays a big part in the local community."
Ngati Kahungunu kaumatua Tom Mulligan opened the ceremony with a traditional Maori welcome and blessed the champs.