Operation Armada, a high-visibility and mobile policing strategy by the NSW Police Marine Area Command targeting vessels and personal watercraft compliance, ran from Saturday to Sunday across waterways that included Eden, Wallaga Lake, Bermagui and Merimbula.

A police spokesperson said more than 100 officers and 54 police boats were deployed, carrying out 120 drug tests and random breath tests on 733 boats and 175 jet skis, and patrolling 210 boat ramps and marinas.

About 60 infringement notices were issued for speeding, not having correct safety equipment and not wearing life jackets, but there were no positive drug or alcohol tests.

"It's good to see that people are taking safety seriously when it comes to drug and drink driving, that's a really positive result," Superintendent Joseph McNulty, Marine Area Commander, said.

"But I also want to remind the boat users who were fined about the importance of wearing lifejackets, having correct safety equipment and not speeding.

"If you are a skipper, remember you are responsible for the safety of everyone on your boat."

Superintendent McNulty said police will continue to be out in force over the summer period, with operations targeting rule breaking.

"We have some of the most picturesque waterways in the country, which also means they see a significant increase in recreational activity during warmer months, meaning more boating incidents and water related injuries and fatalities," he said.

"Large-scale operations like this are necessary during the warmer months to ensure the communities' safety on our waterways by targeting dangerous and anti-social behaviour.

"Those with personal watercrafts take this as your warning - we won't tolerate unsafe and dangerous behaviour, we will have our sights set on you."