The 27 August 1883 eruption of Krakatoa generated a tsunami that hit Amsterdam Island. It tore "Volharding dock" from its anchors and took it to Bidadari (Purmerend Island), where it became beached. Later it was said to have drifted to Middelburg Island. Whatever happened exactly, "Volharding dock" was back at Amsterdam Island by 10 September 1884.