Device for taking core samples from ocean and other submarine floors

摘要

A core barrel for taking a sample core from a submarine floor is provided, and a guide tube for deploying and recovering the core barrel has a center passage through which the core barrel can move. The guide tube has an open end for entry and exit of the core barrel and its passage diverges conically in the direction towards this open end. Barrel-guiding elements are located within the passage for guiding the barrel.