Navy Lookout – In 2021 the Accident Investigation Board – Norway (AIBN) published a detailed report covering the loss of HNoMS Helge Ingstad after she collided with an oil tanker in November 2018. There is much to be learned from this event that is applicable to the RN and global navies. In this in-depth, although far from exhaustive, article we describe the incident and look at some of the key lessons.