Using the ultraviolet band observations from the ocean color satellites,this study has employed a coupled ocean-atmosphere vector radiative transfer model to analyze the ultraviolet polarization characteristics of 355-nm and 385-nm radiation measured at the top of atmosphere (TOA). Results showed that atmospheric molecules contributed most toward the polarization of the ultraviolet radiation reaching the ocean color satellite sensors. Compared with the condition that solely accounts for atmospheric molecules, aerosols, air-sea surface, and water body could also weaken the total degree of polarization (DOP) of ultraviolet radiation reaching the ultraviolet satellite sensors. The total DOP of 355-nm and 385-nm radiation varied in the range of 0%-70% with different TOA viewing zeniths. Compared with the visible band of 412 nm that is usually set by ocean color satellite sensors, the TOA DOP of ultraviolet radiation reaching the satellite sensors exhibited insignificant differences under the same condition.