sumber11Gambar 1. Diagram konseptual penelitian Sumber: [11] Gambar 1 merupakan diagram konseptual penelitian dengan judul Pengembangan Program Studi BerkelanjutanGet the details of the current Voyage of TB.SUMBER 11 including Position, Port Calls, Destination, ETA and Distance travelled - IMO 0, MMSI 525700557, Call sn YDC4212