Which preposition to use with boord

of Occurrences 1%

When I had thus resolued my selfe, I went a boord of the shippe of Bengala, at which time it was the yeere of Touffon: concerning which Touffon ye are to vnderstand, that in the East Indies often times, there are not stormes as in other countreys; but euery 10. or 12.

Which preposition to use with  boord