Ancestry is the place to look. Record set is UK and Ireland, Masters and Mates Certificates, 1850-1927. Beware - some are in reverse order, so when the search takes you to the front page, subsequent pages are before that one!
And newspapers often carried shipping reports, naming the vessel, the master, destination and departure date. That can be a long and tedious search, but a less common name like Oakley may make it a bit easier.