Selat Bali merupakan perairan yang memiliki potensi tangkapan ikan pelagis yang besar seperti ikan lemuru, Penangkapan ikan lemuru dilakukan pada malam hari dengan menggunakan kapal yang dilengkapi dengan lampu. Pendekteksian sensor citra VIIRS – Day Night Band dengan sensor pencahayaan yang tinggi dapat digunakan untuk mengetahui sebaran kapal penangkapan ikan lemuru pada malah hari. Tujuan dari penelitian ini adalah untuk memetakan daerah penangkapan ikan lemuru di Selat Bali menggunakan VIIRS Boat Detection dengan koordinat 8.10o LS - 8.54o LS dan 114.78o BT – 115.6o BT. Data yang digunakan yaitu data VIIRS Boat Detection (VBD) tahun 2013 dan 2014. QF (Quantity Flag) digunakan untuk mendeteksi kualitas pantulan yang diterima oleh sensor VBD. Parameter oseanografi yang digunakan yaitu suhu permukaan laut dan klorofil-a yang diperoleh dari AQUA-Modis Level 3 dan salinitas yang diperoleh dari CMEMS. Data insitu yang digunakan yaitu data posisi kapal penangkapan ikan lemuru pada tahun 2013. Hasil penelitian menunjukkan bahwa cahaya lampu yang terdeteksi dari VIIRS Boat Detection yang diduga kapal penangkapan ikan lemuru lebih banyak ditemukan pada saat musim barat. Cahaya lampu yang dideteksi dari VBD memiliki korelasi spasial yang cukup baik dengan data insitu. Selain hal itu, hasil analisa dapat diketahui bahwa penagkapan ikan lemuru banyak ditemukan pada suhu permukaan laut 28 – 30oC, klorofil-a 0,5 – 2,1 mg/m3, dan salinitas 30 – 35 ppt

Bali Strait water were known for its potential for giant fish fisheries such as lemuru fish.. Lemuru Fishing wihich known that catching during night time and with the boat that equipped with lights. The detection of sensory image VIIRS-Day Night Band with high light sensory that support the catching of lemuru fish at night. The purpose of this research is to map the fising ground of lemuru fish on Bali Strait using the VIIIRS Boat Detection with the coordinate of 8.10° SL - 8.54° SL and 114.78° EL – 115.6° EL. The data that were used was VIIRS boat Detection (VDB) on 2013 and 2014. QF (Quality Flag) in which the value of QF the were used to determine the quality of the reflection that were received by VBD sensory system. The oceanography parameter that were used are sea surface temperature and klorofil-a which were obtained from AQUA-Modis level 3 and the value of the salinity from CMEMS. The data that were used is the position of the lemuru fish cathching boat on 2013. The result of the research showed that the light that the lamp emitted were detected by the VIIRS Boat Detection which been suspected from the lemuru fish carching boat were find more on the west season.The light produced from VBD have a good enough spatial correlations with the data posistion of lemuru cathing boat on 2013. From the analyze can be concluded that the lemuru sih were found a lot on the sea surface temperature around 28-30 C, klorofil-a 0,5-2,1mg/m3 and sality 30-35 ppt.

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