Owing to the rising volume of seaborne trade, oil spills damage the marine environment for over 250 yearly. Thus, various analysismethods such as the Fourier-transform infrared (FTIR), Raman spectroscope, and gas chromatography are used to monitor oil spills atsea, but these methods are expensive. Recently, to reduce operational costs, an underwater fluorometer was adopted. However, thisapproach is not ideal for the remote sensing of oil spills because the device gets submerged in the sea. In this study, we have designedand developed a monitoring system that uses ultraviolet fluorescence to detect spilled oil or water from a distance, as well as proposedan analyzing method defining based on water Raman signal and QF535. Each fluorescence spectrum of water, oil (crude oil), andBunker A was obtained using the system, and was calculated and analyzed from the spectrum individually. Based on the resultsof the analysis, we could successfully identity water and oil at a long distance.