The pencil-work in this incomplete study (excluding the ship) appears to be traced from Tate D00167 (Turner Bequest XVI E). It is an ambitious subject, apparently the first sea storm that Turner attempted. Compare the Welsh mountain view with Llanthony Priory, Tate D00679 (Turner Bequest XXVII R) which is a similarly elaborate sublime subject, but taken to completion.
There are blue colour trials at the bottom edge.
The sheet was formerly folded vertically down the centre.
Blank; stained and dirty.