Admiralty Surveys including contract surveys to Admiralty specifications to 31st March 1986
Scale: 1:1,500,000. ?? Printed chart of the British Isles. Colour coded to show different sounding methods used from 1840 (lead line) to 1986 (echo sounder and modern sonar)
Object Details
| ID: | G219:1/14(1) |
|---|---|
| Collection: | Charts and maps |
| Type: | Chart |
| Display location: | Not on display |
| Creator: | HM Admiralty |
| Places: | British Isles |
| Date made: | 1984; 1986; 1984 1986 |
| Credit: | © Crown copyright. National Maritime Museum, Greenwich, London |
| Measurements: | Sheet: 120 cm x 69 cm |