<page_title> German submarine U-30 (1936) </page_title> <section_title> Summary of raiding history </section_title> <table> <cell> 28 December 1939 <col_header> Date </col_header> </cell> <cell> HMT Barbara Robertson <col_header> Ship </col_header> </cell> <cell> 325 <col_header> Tonnage </col_header> </cell> <cell> Sunk <col_header> Fate </col_header> </cell> </table>
On 28 December, U-30 sank Barbara Robertson, which weighed 325 tons.