ABSTRACT This study aims to simulate two-dimensional tidal models based on BIG (Geospatial Information Agency) data. The location of the research is in the waters of Sabang covering the coordinates of 95.15 - 95.45 BT and 5.725 - 6 LU. Simulations are carried out with M2 tidal waves and combined tides (M2 + S2 + K1 + O1). For simulations with M2 the model analysis for each period t=1/4T, t=1/2T, t=3/4T, t=T. While the simulation with the tidal combined analysis is carried out during the full moon and tidal changes. The verification results with hydros data show that numerical models are quite good (r= 0.69). Current during high tide (full moon) (0.8m), current at low tide towards high tide (full moon) (0.7m), current during high tide (low) (0.3m), current at low tide towards tide (Perbani) (0.2m). Whereas currents based on M2 waves when t = 1/4T are elevation values in the southwest (-38.5 cm) and (-45.5 cm) in the northeast. t=1/2T the lowest elevation value in the southeast (2.5 cm) and the highest elevation in the northwest (5 cm). t=3/4T the highest elevation values in the southeast (46.5 cm) and the lowest in the southwest (38.5 cm). t=T low elevation values are in the northwest (-6 cm) and relative increase in the southeast (-2.5 cm). Sabang Bay belongs to the double daily type (semi-diurnal tides). Keywords : Purnama Tides, Perbani Tides, Hydrodynamics, Sabang Bay.   ABSTRAK Penelitian ini bertujuan untuk simulasi model pasang surut dua dimensi berdasarkan data BIG (Badan Informasi Geospasial). Lokasi penelitian adalah di Perairan Sabang meliputi titik koordinat 95,15 - 95,45 BT dan 5,725 - 6 LU. Simulasi dilakukan dengan gelombang pasang surut M2 dan pasang surut gabungan (M2+S2+K1+O1). Untuk simulasi dengan M2 analisis model setiap periode t=1/4T, t=1/2T, t=3/4T, t=T. Sedangkan simulasi dengan pasang surut gabungan analisis dilakukan saat pasang purnama dan pasang perbani. Hasil verifikasi dengan data hidros menunjukkan model numerik cukup bagus (r=0.69). Arus saat pasang menuju surut (purnama)( 0,8m), arus saat surut menuju pasang (purnama) (0,7m), arus saat pasang menuju surut (perbani) (0,3m), arus saat surut menuju pasang (perbani) (0,2m). Sedangkan arus berdasarkan gelombang M2 saat t=1/4T nilai elevasi di bagian barat daya (-38,5 cm) dan (-45,5 cm) pada bagian timur laut. t=1/2T nilai elevasi terendah di bagian tenggara (2,5 cm) dan elevasi tertinggi di bagian barat laut (5 cm). t=3/4T nilai elevasi tertinggi pada bagian tenggara (46,5 cm) dan terendah di bagian barat daya (38,5 cm). t=T nilai elevasi rendah terdapat di bagian barat laut (-6 cm) dan relatif meningkat pada bagian tenggara (-2,5 cm). Teluk Sabang tergolong dalam tipe harian ganda (semi diurnal tides). Kata Kunci: Pasang Surut Purnama, Pasang Surut Perbani, Hidrodinamika, Teluk Sabang.