Soundings Collection

Map of Lanzarote, Canary Islands, with soundings in fathoms. Date: 1835

Sailor - Heaving the Lead
A sailor heaving the lead (to take soundings) Date: 18th century

Map of Tenerife, Canary Islands, with soundings in fathoms. Date: 1838

Map of Fuerteventura, Canary Islands, with soundings in fathoms. Date: 1835

Diagram of a Whirlpool
The form of the whirlpool at the south-east of Sumbo, Sunderoe Island, Faeroe Isles, aka Monck Rock whirlpool, with the soundings

Map of Palma, Gomera and Hierro, Canary Islands
Map of Palma, Gomera and Hierro (or Ferro), Canary Islands, with soundings in fathoms. Date: 1837

Map of Naos and Arrecife, Lanzarote, Canary Islands
Map of the ports of Naos and Arrecife, Lanzarote, Canary Islands, surveyed by the Spanish Navy in 1853, with outer soundings from a survey of 1835, updated in 1880. Date: 1881

Machinery for Deep-Sea Soundings, 1861
Engraving showing a selection of improved machinery designed for deep sea soundings, 1861

Ajax Takes Soundings
Before a single spadeful of earth is dug, the Ajax takes soundings to determine the best route the tunnel should follow

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