The Australian Transport Safety Bureau (ATSB) is highlighting the >need for a shared understanding or ‘shared mental model’ of a ship’s passage plan by bridge crew and harbour pilots to ensure a safe voyage. The ATSB’s investigation into the near grounding of the bulk carrier Aquadiva in Newcastle Harbour (New South Wales) on 12 February 2017 also underlines the importance of a ship’s bridge crew and harbour pilot engaging in effective communication and information exchange to develop this shared understanding or mental model of a ship’s passage plan.