Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1509; Approach to Loch Ryan, Area in SqKm: 207, (01/02/2017 to 10/02/2017), Standard: IHO S44ed5 Order 1a. Contract: Medium. FY 2016/17. Contractor: MMT UK.