She said each team had the potential to do well and medal.
"I think the New Zealand teams always do well and are very successful, and try hard. When they get on the water they are very focused and often place well."
Martin said the advice she gave her under-19 team - which includes Annaliese Heuvel, Monique Hawthorne, Suzy Cumming, Kaydi O'Connor-Stratton, Kelsey Eames, and Tenaya Chatera - was to have fun but to focus as a team when the racing begins.
"I said have fun off the water and really enjoy yourselves, but when you go into race mode really put your head on and focus," she said.
Each New Zealand team heading to the world champs this month had to earn the right to represent the country during a qualifying tournament in Kawerau in April.
Teams will be competing in six-person rafts and will be marked across four main disciplines, which are sprint, head-to-head, slalom and downriver.
The sprint is a time trial race, with teams racing alone against the clock and times helping towards seeding in the head-to-head races.
The head-to-head is a knockout race pitting two teams against each other until there is a champion. The slalom discipline sees teams racing alone through gates, and the downriver discipline usually includes a mass start and a longer course, with the first team across the finish line the winners.
An overall champion in each division is then named according to points gained in all four disciplines.