Complex sentence: On 24 September 1939, "Phryné" was on a voyage from Immingham, United Kingdom to Bayonne, France when she hit a mine laid by the German submarine "U- 13" in the North Sea.
Split into simpler sentences: On 24 September 1939, "Phryné" was on a voyage from Immingham, United Kingdom to Bayonne, France. When she hit a mine laid by U- 13 in the North Sea.