To recover consolidated sediments and hard rock samples a 270kg heavy chain-bag dredge equipped with steel dents on the solid frame was used during the SO 106 cruise. The dredge was towed behind the ship and the idea is to collect the material scraped off the ocean floor by the dents inside the chain bag. A tension meter was used onboard to monitor the pulls produced by the dredge when dragged along the seafloor.

Dredge - metal dents with attached chain bag (source: GEOMAR)