U.S. Geological Survey Open-File Report 2006-1169
Figure 13: The contract boat used for collecting vibracores is shown here prior to launching at the Salt Pond boat ramp. The boat was equipped with a frame for supporting coring tubes and vibrations apparatus, as well as a moon pool that allowed coring to be done through the hull of the boat beneath the frame. Photo by Dann Blackwood, USGS-GD-MA.