Three years after it was launched, Greymouth-affiliated naval boat the HMNZS Hawea is still not able to make it into port because it cannot get across the bar.
Although it has adopted the three West Coast towns as its 'home ports', it has only ever docked in Westport.
Defence Force media adviser Lieutenant Commander Ange Barker said the naval planning team had gone over the calculations for entry into Greymouth and found the 'under-keel clearance' left only 0.6m across the Grey River bar. That was well below both navy and Port of Greymouth rules.
Mrs Barker said the bar had always been a well known problem, but the decision would be reviewed if new information came to light, such as the bar being dredged again.
Greymouth Port harbour supervisor Ian Haussmann said they urged ships to come in at high tide but it was up to the individual skippers and some were wary of crossing the bar.