Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1484; Dover Strait Routine Resurvey 2015, GS4 South Calliper, Area in SqKm: 18; GS4 Goodwin Knoll, Area in SqKm: 7; GS3 Northern Head of South Calliper, Area in SqKm: 3; GS2 Gull Stream Full Area, Area in SqKm: 25; GS1 South Sand Head, Area in SqKm: 2; DWR C3 Tail of the Falls, Area in SqKm: 8; DWR C1 Tail of the Falls, Area in SqKm: 7, (08/08/2015 to 25/09/2015), Standard: IHO S44ed5 Order 1a. Contract: RRS. FY 2015/16. Contractor: EGS.