Otuhaereroa and Motuanauru Islands lie near the east side of the entrance into Croisilles Harbour. There is adequate depth to enter between the land and Otuhaereroa and between the two islands but extreme care must be taken because of off lying rocks from both islands. Moukiriki Island lies about 1.3 miles south of the islands. A large number of rocks, islets and reef extends north from Motuanauru Island and should be given a berth of at least 750 m when entering through the main entrance.