Police say a GPS device could provide vital information about what happened to missing yachtie Paul van Rensburg.

A teenager is missing, presumed drowned, after he was washed off his boogie board at Piha yesterday.

Searchers have found the body of the second man who drowned in a tragic flounder fishing trip southeast of Auckland.

Missing yacht Tafadzwa has been spotted west of the Chatham Islands but with no sign of skipper Paul van Rensburg.

Police are searching for a second man who is presumed drowned after a floundering expedition went tragically wrong.

Boaties have been asked to look out for missing yacht Tafadzwa, which could be drifting without a skipper at the helm.