Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1114; North Shipwash, Area in SqKm: 13, (01/08/2005 to 06/08/2005), Standard: IHO S44ed4 Order 1. Contract: RRS (2005/06). FY 2005/06. Contractor: RN (NP1016).