Drawn with the sketchbook inverted, this is a rough sketch of the composition and arrangement of ships for Turner’s picture, The Battle of Trafalgar, as Seen from the Mizen Starboard Shrouds of the Victory, exhibited at Turner’s Gallery in 1806 (Tate N00480;1 see the Introduction to this sketchbook). Showing the quarterdeck of the Victory and to her right the French ship Redoutable (see chiefly folio 10, D05457; Turner Bequest LXXXIX 11), it extends leftwards on to folio 30 (D05476; Turner Bequest LXXXIX 23) to include the Spanish flagship Santissima Trinidad (see folio 21 verso, D05458; Turner Bequest LXXXIX 12). Another slight sketch of the composition, now divided and bound as folios 15 verso and 11 (D05482, D05460; Turner Bequest LXXXIX 26a, 13), was originally a double-page spread, and there is another across folios 27 verso–28 (D05471– D05472; Turner bequest LXXXIX 20a–21). A more careful study of the composition is drawn across folios 14 verso–15 (D41427– D05481; Turner Bequest LXXXIX 26), for which see full catalogue entry.
Martin Butlin and Evelyn Joll, The Paintings of J.M.W. Turner, revised ed., New Haven and London 1984, p.46 no.58 (pl.68).