The mother of a 13-year-old injured when a jetski rammed his boat has defended letting him and his mate, 11, go on the water alone.

A teenage jetskier was killed yesterday when he fell off and was run down by friends. It was one of two horrifying water accidents involving young people in popular holiday spots.

An inquiry has laid blame on both anti-whaling vessel Ady Gil and a Japanese whaling ship for their Southern Ocean crash earlier this year.

While the weather is predicted to be perfect for taking to the water this long weekend, people are being warned that the sea can be particularly dangerous at this time of year.

A launch believed to be worth more than $400,000 was this morning lying wrecked on the Tauranga coast after hitting rocks.

Two boaties were injured - but miraculously survived - when their launch was cut in two and sucked under the Waiheke ferry.

Two men were injured when they were thrown into the sea after their motor launch collided with the Waiheke Island ferry last night.

A jetboat driver has been fined and ordered to pay reparation to the family of a British tourist killed in a river boat crash in December 2008.

Police have identified the two victims of the worst New Zealand port tragedy in years.

The body of a middle-aged man without a lifejacket was found floating in Auckland's Waitemata Harbour yesterday, renewing safety calls.

The NZ anti-whaling vessel half-destroyed when it and a Japanese whaling harpoon ship collided is too damaged to be salvaged.

Murray McCully has urged experts meeting in Wellington to recommend ways of preventing a tourist boat disaster from ever happening in Antarctica.