Try the Mariners mailing list.
mariners-l-request@rootsweb.com word subscribe in body
http://www.reach.net/~sc001198/ShipsA.htmGo to home & search
Also
www.theshipslist.com Might have passenger or crew lists
If Welsh, try
www.welshmariners.org.uk OR
www.swanseamariners.org.uk For American ships/ports, do a Google search for a site called Mystic Seaport (Conn.) if this doesn't work:
http://www.mysticseaport.org/ For Royal Navy
http://www.pbenyon.plus.com/Naval_History/ You could try
www.scotlandsfamily.com as they have some early passenger lists available on Scots.
Some master mariners available here, but incomplete as yet
http://www.history.ac.uk/gh/capintro.htm Betty Pace -
bapace2@juno.com