Patent ID: 11939831
Assignee: FNV IP B.V.
Field: Measurement (Instruments)
Classification: CPC E  B  G | IPC B  E  G

Claim 14:
15. A method for collecting samples from a bed of a waterbody by use of a device, the method comprising:
lowering a top lift unit and a corer unit of the device in the waterbody by use of a lifting and lowering unit, the top lift unit is connected to via a cable, wherein the corer unit is attached to the top lift unit;
positioning the top lift unit in a desired corer release position in a vicinity of the bed of the waterbody by use of a positioning unit bi-directionally communicating with a control unit and keeping the corer unit and top lift unit stable in a vertical direction by using a depth stabilizer;
releasing the corer unit from the top lift unit by activating a release mechanism so that it is at least partly driven into layers of the bed of the waterbody while leveling the top lift unit after the corer unit is released from the top lift unit;
collecting samples from the layers of the bed of the waterbody; and
pulling the corer unit out of the bed of the waterbody and lifting it back to a vessel.