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Amgueddfa Cymru – Museum Wales
Starboard stern view of the hydrological survey launch SONIARUS as it sails from Pierhead out into Cardiff Bay during a visit to Cardiff Docks by an Air Commodore and party of RAF officers.
British Transport Docks Board's hydrological survey launch SONIARUS (54gt) was built at Brightlingsea by James and Stone Ltd. It was powered by twin English Electric diesel engines and launched on 15 October 1969.
