About IMASATO MOTONOBU
About 海上技術安全研
About NAGAI HIROYUKI
About KIMURA TAKANORI
About FUTAMURA AKIRA
About マリンエンジニアリング
About ship
About monitor
About buoy
About underwater acoustics
About alarm system
About detection method
About littoral zone
About fast Fourier transformation
About linear prediction
About power spectrum
About frequency (Hz)
About threshold
About tugboat
About cargo boat
About patrol boat
About marine ship
About difference
About Other waterborne transportation and service
About Underwater acoustics
About 海上
About 航行
About 船舶
About 水中音
About 開発