A New Zealand naval ship that sank after smashing into a coral reef in the South Pacific was left on autopilot ... human error was to blame for the sinking of HMNZS Manawanui, the first ship that New Zealand has lost since the Second World War. Yvonne Gray, the vessel’s British-born captain, is originally from Harrogate, Yorkshire, and previously served in the Royal Navy before moving to New Zealand with her wife. ... the crew failed to realise the vessel was on autopilot. ... The cause of the disaster was the ship’s autopilot “not being disengaged when it should have...