Digital Library Search
![Figure 42 ship4336.jpg Figure 42](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4336.jpg?itok=HgKbEux2)
Description
Figure 42. Negretti and Zambra portable ballast mounting mechanism uponreturning to the surface. This was designed to eliminate some problemsassociated with the mounting mechanism used on the CHALLENGER. This modification was made in 1878 and is described in the scientific literature of the day.. (Image credit: Oceanographic Museum of Monaco | Y. Berard)