The image above is a detail from a Globe & Mail ROB graphic, The Global Shipping News. Three years ago this blog has an entry on Windjammer and East Indiaman Shipping Lanes. The link was from a economic history blog. That map was created by going through ship logs to find relative positions of a couple hundred ships from the 17th to 19th centuries. There is a new crowd source project, Old Weather, out there to look in the same logs, types of logs, to gets weather readings that can be graphed in time and space. This project is also looking at a different collection of ships than the Windjammer one. Old Weather is getting people to transcribe logs from Royal Navy ships from the late 19th and early 20th century. The other project had looked at English, French and Dutch in both commercial and government hands.