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Reconstruction of Robert Hooke's waywiser sounder for measuring the depth of the ocean

1977

Model of Stellwagen's Cup Lead Sounder, 1820

1820 (original)
‘Bulldog’ sounder and sampler for gauging the depth of the sea floor and collecting sediment samples, designed by marine engineer Mr. Steil, assistant engineer Mr. Roughton, and the ship’s naturalist George Charles Wallich aboard the paddle steamer HMS Bulldog during telegraph survey operations around the Faroe Islands, Iceland and Greenland, 1860. The apparatus has been fitted with a modern rope.

Bulldog sounder and sampler used during telegraph survey operations

1860