title: Underwater sound of rigid-hulled inflatable boats.
abstract: Underwater sound of rigid-hulled inflatable boats was recorded 142 times in total, over 3 sites: 2 in southern British Columbia, Canada, and 1 off Western Australia. Underwater sound peaked between 70 and 400 Hz, exhibiting strong tones in this frequency range related to engine and propeller rotation. Sound propagation models were applied to compute monopole source levels, with the source assumed 1 m below the sea surface. Broadband source levels (10-48 000 Hz) increased from 134 to 171 dB re 1 μPa @ 1 m with speed from 3 to 16 m/s (10-56 km/h). Source power spectral density percentile levels and 1/3 octave band levels are given for use in predictive modeling of underwater sound of these boats as part of environmental impact assessments.
authors.affiliation: Centre for Marine Science & Technology, Curtin University, GPO Box U1987, Perth, WA 6845, Australia C.Erbe@curtin.edu.au, syafrin.liong@gmail.com, matthew.koessler@postgrad.curtin.edu.au, A.J.Duncan@curtin.edu.au, T.Gourlay@cmst.curtin.edu.au.
authors.forename: Christine
authors.initials: C
authors.lastname: Erbe
authors.affiliation: Centre for Marine Science & Technology, Curtin University, GPO Box U1987, Perth, WA 6845, Australia C.Erbe@curtin.edu.au, syafrin.liong@gmail.com, matthew.koessler@postgrad.curtin.edu.au, A.J.Duncan@curtin.edu.au, T.Gourlay@cmst.curtin.edu.au.
authors.forename: Syafrin
authors.initials: S
authors.lastname: Liong
authors.affiliation: Centre for Marine Science & Technology, Curtin University, GPO Box U1987, Perth, WA 6845, Australia C.Erbe@curtin.edu.au, syafrin.liong@gmail.com, matthew.koessler@postgrad.curtin.edu.au, A.J.Duncan@curtin.edu.au, T.Gourlay@cmst.curtin.edu.au.
authors.forename: Matthew Walter
authors.initials: MW
authors.lastname: Koessler
authors.affiliation: Centre for Marine Science & Technology, Curtin University, GPO Box U1987, Perth, WA 6845, Australia C.Erbe@curtin.edu.au, syafrin.liong@gmail.com, matthew.koessler@postgrad.curtin.edu.au, A.J.Duncan@curtin.edu.au, T.Gourlay@cmst.curtin.edu.au.
authors.forename: Alec J
authors.initials: AJ
authors.lastname: Duncan
authors.affiliation: Centre for Marine Science & Technology, Curtin University, GPO Box U1987, Perth, WA 6845, Australia C.Erbe@curtin.edu.au, syafrin.liong@gmail.com, matthew.koessler@postgrad.curtin.edu.au, A.J.Duncan@curtin.edu.au, T.Gourlay@cmst.curtin.edu.au.
authors.forename: Tim
authors.initials: T
authors.lastname: Gourlay