I have been seeking passenger info on this ship for some time now. My person(s) are: Philip Welch and William Dalton. They were both stolen from their homes in Ireland and taken to Ipswich, Mass.
There they were sold to a Mr. Symonds. They were to serve nine years before they could be released. I have more information on Philip Welch.
I'm sorry I can't help with the Powers' connection. If only we had more info about the ship, it would be a start! I have the ship's master as being a George Dell.