Strangford River from an accurate survey by George Johnson of Portaferry, pilot, 1755.

Single sheet, engraving, backed with contemporary wall-paper. Scale [circa 1:17,000 (bar)]. The bar scale is in English miles. This is an ungraduated chart marking rocks and soundings and contains a key to conventions and sailing directions. Prominent buildings are shown in view. The title cartouche is decorated with Neptune supporting a scallop shell.

The Samuel Johnson whose name appears prominently commending the chart is not the leading writer of the age (who died 1784) but the chart-maker's brother.

Object Details

ID: G221:11/37
Collection: Charts and maps
Type: Chart
Display location: Not on display
Creator: Johnson, George
Places: Northern Ireland
Date made: 1782
Credit: National Maritime Museum, Greenwich, London
Measurements: Printed area 52 x 37cm, on sheet 59 x 39cm.
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