In the period from 6th April to 7th May 1987 and from 10th May to 21st June 1987 BGR acquired seismic lines in the South China Sea, Sulu Sea and Celebes Sea during cruises SO49/1 and SO49/2 with RV SONNE. The lines SO49-02A, SO49-04, SO49-05, SO49-06, SO49-07, SO49-08 and SO49-09 consist of raw data. The lines SO49-01, SO49-02, SO49-03, SO49-10, SO49-11, SO49-12, SO49-13, SO49-14, SO49-15, SO49-16, SO49-17, SO49-18, SO49-18A, SO49-19, SO49-20, SO49-21, SO49-22, SO49-23, SO49-24 and SO49-25 are migrated data.