Abstract: Owing to the impact of sea surface interference,the observed results of underwater radiated noise from vessels usually were inaccurate.Three approaches were proposed to mitigate the influence of sea surface interference:averaging across the time,averaging across multiple hydrophones,presenting the data in terms of the One-Third Octave(OTO)bands rather than as narrowband data.The effectiveness of the approaches were validated by ray model.According to the standard released from International Organization for Standardization(ISO),the underwater noise radiated from a new research vessel was measured.During the data collection,the Vessel sailed at different speeds.Furthermore,the one-third octave sound band pressure levels of the radiated noise at different speeds were calculated and compared with the standard SLIENT-E published by the DET Norske Veritas(DNV).Analysis result indicated that the low frequency radiated noise of the research vessel is well controlled,but the high frequency part is poor suppressed.