Lucerne. Switzerland. GBR W2X, Bow Kathryn TWYMAN and Imogen WALSH, start of the Lightweight Women's double sculls heat at the 2013 FISA WC. III. 2013 FISA WC. III. 11:06:16  Friday  12/07/2013  [Mandatory Credit, Peter Spurrier/ Intersport Images] Lake Rotsee,