At the heart of the improved detection system is a bottom pressure recorder (BPR), which, as its name suggests, is placed thousands of feet down, at the bottom of the ocean.
Di bagian inti dari sistem deteksi yang lebih maju ini terdapat pencatat tekanan dasar laut (bottom pressure recorder / BPR), yang, sesuai dengan namanya, ditempatkan ribuan meter di bawah, di dasar laut.