Lock sounder of the HIRONDELLE. Figure 1 is a view as it makes contact with the bottom. Figure 2 shows the sounding tube sampler returning to the surface after jettisoning its weights. Plate II, left side. In: "Results of the Scientific Campaigns of the Prince of Monaco." Vol. 84.

Image ID: ship4634, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Credit: NOAA Rice Library of the National Centers for Coastal Ocean Science

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