Map of part of Onrust Island [Pulau Kapal, or Kapal Island], Indonesia, artist unknown Part of the coast of Kapal Island, Indonesia, showing the Dutch naval fortress, and the island of Kuiper [Oulau Cipir, or Cipir Island]. There is a key to parts of the fort, including the tide gauge ['waterspiel koker'], small harbour ['kleine haven'], crane head ['kraanhoofd'], long slipway ['lange helling'] and coal warehouse ['stunkolen magazijn']. An arrow shows the direction north. Headed: 'Schets, aantoonende het punt, waar de waterpeil is geplaatst gerrust op het Eiland Onrust' [Sketch showing the point where the water gauge is placed on the island of Onrust]. 1839