This is another of Raper's maps where he has placed the title in a scroll cartouche. The fact that the foot of the scroll is curled up and hides the longitudinal measurement suggests he may have been unsure of its accuracy. After disembarking the convicts at Cascade Bay, the Sirius was forced by wind changes to move to Sydney Bay to complete the unloading of stores. The blue and yellow flag indicating it was safe to land was flying but a sudden and unanticipated shift in wind and tide resulted in the ship running aground and being wrecked on a reef the incident recorded by Raper in his The Melancholy Loss of H.M.S. Sirius off Norfolk Island March 19 th 1790 This unsigned and undated map has two views of Norfolk Island on the one sheet. That on the left hand side is an enlarged view of the land between Point Ross and Ball Bay and shows the route of the Sirius from Sydney Cove to Norfolk Island via Phillip Island and Nepean Island while that on the right features Norfolk Island.
Relief is shown pictorially and bathymetric soundings are recorded.
Raper remained on Norfolk Island until 12 February 1791 when he and the rest of the Sirius' crew left on the Supply to return to Sydney.