Wikipedia
CLIWOC
The Climatological database for the world's oceans (CLIWOC) was a research project to convert ships' logbooks into a computerised database. It was funded by the European Union, and the bulk of the work was done between 2001 and 2003. The database draws on British, Dutch, French and Spanish ships' logbook records for the immediate pre-instrumental period, 1750 to 1850.