Drydock facilities are available at Devonport, operated by the Royal New Zealand Navy, situated on the N side of the harbour.
Graving Dock: Length 184.4m, width 23.5m and depth 10.0m at MHWS.
There are two slips in Westhaven Boat Harbour (36°50.3'S 174°45.0'E):
Orams Marine Slip, can accommodate a vessel of 600t displacement.
Marine Steel Slip, can accommodate a vessel of 1,500t displacement.
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