Halcyon (1933) and Skipjack (1934)
Scale 1:48. Plan shows the sheer lines, longitudinal half breadth and body plan design drawing for the Halcyon class sloop minesweepers Halcyon (1933) and Skipjack (1934). The drawing bears the signature of Arthur W. Johns [Director of Naval Construction 1930-1936]. The title of the plan is "Sloop Minesweeper for 1931 Programme".