SV Rewa.
On the 28th June 1930 she was towed from Auckland to Moturekareka Island, Harauki Gulf, NZ, where the barque was sunk to act as a breakwater. Some of the steel was salvaged in 1957, but what remains today is still recognisable as the hull of a sailing ship. https://www.wrecksite.eu/wreck.aspx?241837
Sea - Shipwrecks 
On the 28th June 1930 she was towed from Auckland to Moturekareka Island, Harauki Gulf, NZ, where the barque was sunk to act as a breakwater. Some of the steel was salvaged in 1957, but what remains today is still recognisable as the hull of a sailing ship.
https://www.wrecksite.eu/wreck.aspx?241837