Aberystwyth Shipping Records.

From the National Library of Wales. www.llgc.org.uk/en/collections/activities/research/nlw-data/aberystwyth-shipping-records-dataset. Crew accounts and agreements (generally known as crew lists), 1856-1914, for vessels registered at the port of Aberystwyth, Cardiganshire, Wales, UK.

Transcribed using Python and openpyxl (see also Bitbucket repository).

updated (24/01/17)

The earliest and latest date recorded for each vessel.
The earliest and latest date recorded for each mariner, with a line for every mariner that has a parsable date for joining and leaving the ship between 1850 and 1920. The same individuals in some cases are plotted more than once.