check out the following book:
Title: Tracing Births, Deaths and Marriages at Sea by Christopher & Michael Watts
Publisher: Society of Genealogists
Published: 2004
Format: Paperback
Pages: 180p
ISBN: 9781903462829
Available from
http://bookshop.nationalarchives.gov.uk/ for GBP11.00
Also, some good guidance from the UK National Archives website here >
http://www.nationalarchives.gov.uk/records/looking-for-perso...