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Note: Arc Explorer is now a modern Win10/iOS/Android app linked in text below.


  • This CLIWOC dataset was posted on the internet as early as 2002
  • This tabulates some captain's ship's logs for the period 1750 to 1850
  • They document the fascinating voyages of exploration in that period
  • Products such as Arc Explorer allow you to map these for free
  • That is a web service that uses your computer as a web client

This compared ESRI's File Geodatabase and Google's KMZ file formats, against their respective web viewers: The CLIWOC dataset has almost 290,000 points, and is almost 250Mb Geodatabase. The location parameters were extracted into a File Geodatabase and compressed to 10 Mb. These are displayed by 25 year time-slices and for Captains Cook and de la Perouse. This file geodatabase is easily downloaded and consumed by ArcGIS Explorer. For comparison, a KMZ file was exported directly from the ESRI MXD file.


  • Unzip: CliwocExports.gdb.zip into a local folder called: CliwocExports.gdb
    - click: Save As a local file, an unzip it to that folder on your computer
  • Install ArcGIS Explorer from the web link here
  • In ArcGIS Explorer main menu, select: File then: Open
  • Select the icon: File Geodatabase on the left hand banner
  • Navigate to the folder you just created: CliwocExports.gdb
  • Select the file: CliwocExports.gdb within it
  • Select one of the layers within it, say: delaPerouse
  • Follow the rest of the instructions in ArcGIS Explorer
  • See the end of de la Perouse's voyage off Australia's east coast:

Capt. de la Perouse's  ships - the Astrolabe and the Boussole - disappeared without trace offshore Australia.
His original intent was to claim it for the French king, and he almost took a young Napoleon as his surveyor...
Think of the consequences had Napoleon died young!

From: Die verschollenen Schiffe des Laperouse (The lost ships of Laperouse), Hans Otto Meissner, C. Bertelsmann (1984)


Send mail to andrew (at) zolnai.ca with questions or comments about this web site.
Last modified: 21 Mar 2016