Firstly, I am not formally claiming that the Bang-up is his boat, but it is a good candidate.
I went about finding it in a funny sort of a way. I knew when and where he had sailed the Ellen from the newspaper shipping lists in the online British Newspaper Archives. I know about the Ellen from his Will, and entries in Lloyd's register.
I knew from parish register entries that he had been a Master Mariner for many years before he took charge of the Ellen. I went looking in the shipping lists for a boat captained by "Johnson" where a) Johnson was captain of the boat for a long time and b) ceases to be reported in the shipping lists just prior to being named in shipping lists as captain of the Ellen. Johnson captained the Bang-Up from (at least) April 1812 until January 1829 when the frequent shipping list entries for "Bang-Up, Johnson" suddenly and completely stop. The first shipping list to name him captain of the Ellen is April 1829. John Johnson married in 1810 and the Bang-Up was built in 1811 at Hull. So, what I have is pretty circumstantial, but it does fit together fairly comfortably. The Bang-Up was a coastal trader - which fits with a story that has been passed down about him. (Its not much of a story and I wont repeat it here.)
About the Bang-up. "The Register of Shipping for 1822 by a Society of Merchants, Ship-owners and Underwriters" shows it to be a 48 ton single deck sloop, a London coastal trader and names the Master and Owner as Johnson. (The register is on Google Books).
All of that is very nice, but there is a bit of a hole in it. I know the Master/Owner of the Bang-Up has the surname Johnson, BUT I don't know his given name. I would like it to be John, but it could be William, Thomas or Fred. None of the records or lists I have seen have stated so much as a first initial.
Thank you for your interest and assistance
Steve Nethercote