Friends and family of a missing 73-year-old Auckland man have been joined by the police dive squad in their search for him.
Donald Ravenscroft went missing from his yacht "Rakiah" which was moored at the mouth of the Mahurangi River.
He was last heard from about 7.40pm on Sunday when he rang his wife and told her he was planning to drive home to Wellsford.
Police were called on Monday when he did not come home and another vessel - his three-metre white inflatable - was located that night tied to a pohutukawa tree on the western side of the Mahurangi Harbour, opposite Scott's Landing.
The five horse power, blue and grey Suzuki outboard motor and a pair of wooden oars were missing.
Police suspect that Mr Ravenscroft may have attempted to swim after his inflatable drifted away from the launch.
His personal belongings were found on his yacht, including his car keys and cell phone and his vehicle was parked at Scott's Landing.
The police dive squad began a search of the river today while friends and family assisted with a shoreline search.
Mr Ravenscroft is described as being 1.9 metres tall, medium build, clean shaven with grey hair.
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