Complex sentence: In 2012 the wreck of "U- 676" was detected in position in the vicinity a mine barrage, "Vantaa 3", had been laid by the and on 12 January 1945.
Split into simpler sentences: In 2012 the wreck of "U- 676" was detected in position. In the vicinity a mine barrage, "Vantaa 3", had been laid by the and on 12 January 1945.