<![CDATA[ The Model simulation of tidal current was carried out by using software Surface Water Modeling System 8,1 to determine the pattern of tidal current at the out water pond of the Tanjung Priok port. This research was conducted on june to july 2009 to get field data at out side water port of Tanjung Priok Port. Data processing was done on September-October 2009 at the Hidrooceanography Department, Indonesia Navy, Ancol, North Jakarta  The data were used such as, ground data which was the direction data and the speed, and The height of water. The results of this research showed that the type of tide in outside waters pond of the Tanjung Priok port was diurnal with the value of formzhal 3,55. The current condition on the flood was moving to the south side (going to beach) and on ebb was moving to the north side (going to sea). The Maximum speed of tide current on spring tide was range between 0,0003 - 0,018 m/s, Whereas, on the neap tide were range between 0,0005-0,015 –m/s.  Keywords: Modeling System 8,1, Tanjung Priok, Tidal Current Simulasi pemodelan arus pasang surut dilakukan dengan menggunakan perangkat lunak SMS 8.1 untuk menentukan pola arus pasang surut di luar kolam Pelabuhan Tanjung Priok. Penelitian ini di lakukan dengan 2 tahap, tahap pertama yaitu pengambilan data lapangan pada bulan Juni-Juli 2009 di Perairan Teluk Jakarta khususnya di luar Kolam Pelabuhan Tanjung Priok serta tahap kedua yaitu pengolahan data serta running program pada bulan September-Oktober 2009 di Dinas Hidro-Oseanografi TNI-AL Ancol, Jakarta Utara. Hasil penelitian menunjukkan bahwa tipe pasang surut di luar kolam Pelabuhan Tanjung Priok yaitu harian tunggal dengan nilai bilangan formzal 3,44. Kondisi arus pada saat pasang adalah bergerak ke arah selatan (menuju pantai) sedangkan pada saat surut bergerak ke arah utara (menuju laut). Kecepatan arus pasut pada kondisi purnama (spring tide) berkisar antara 0,0003-0,018 m/s, sedangkan pada kondisi perbani (neap tide) berkisar antara 0,0005-0,015 m/s.  Kata kunci : Arus Pasang Surut, Pemodelan, SMS 8.1, Tanjung Priok]]>
