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Archive: November 2019 (3 Posts)

This map indicates the location of ships sunk by U-boat activity in the Mediterranean, the Atlantic, and the North Sea, specifically within those areas open to unrestricted warfare.  The total was roughly 7,500 vessels.

Risky Business

Posted by: Mike Klein

During World War I, the most hazardous place to be, relatively speaking, was not on the battlefield, but inside a German U-boat. Throughout the war, Germany deployed 375 Unterseebooten, i.e. U-boats or submarines; 202 were lost in action, or about fifty-four percent. Similarly, of the 17,000 sailors who served in them, about 5,100 were lost …

Brown, red, and yellow tinted map illustration of the continents of Europe, Asia, Africa and Australia, with a circular frame around them

Surveying: The Art of Measuring Land, Part One

Posted by: Ed Redmond

This is the first of two posts outlining traditional 18th and 19th surveying methods. According to the Encyclopedia Britannica, surveying is the art and science of measuring land. More precisely, it is “a means of making relatively large-scale, accurate measurements of the Earth’s surface.”  The authoritative 18th century treatise on surveying, entitled “The Compleat Surveyor or …

Brown, red, and yellow tinted map illustration of the continents of Europe, Asia, Africa and Australia, with a circular frame around them

Celebrate GIS Day at the Library of Congress on Wednesday, November 13th!

Posted by: Tim St. Onge

The Library of Congress is proud to celebrate GIS Day on Wednesday, November 13th with a showcase event: In the Shadows of Notre Dame: Geographic Information Science, 3D Mapping and Cultural Heritage Preservation. The all-day series of discussions will be held from 8:30am to 3:30pm in Room LJ-119 on the first floor of the Thomas …