Waterproof meteorological chart of the North Atlantic, designed for emergency use in lifeboats and provided by the Navigators and Engineer Officers Union to members. Issued "in war time service to Members with grateful acknowledgement to Messrs Kelvin, Bottomley & Baird Ltd., and Henry Hughes & Son, Ltd. for their assitance and help." Glazed linen. In an envelope printed with a log book form. Based on US Hydrographic Department and British Admiralty data.