Repellence Effect of the New Sound for Underwater Speaker of Hydrofoil

• Autorzy: Nakashima T. , Kobayashi N. , Yamada H. , Katsumata T. , Yoshida R. , Kato H. , Okabe H. , Kawazu I. , Yanase Y. , Omine M. , Terada M. , Sugioka H. , Kyo M.

Identyfikatory

DOI

10.12716/1001.09.02.07

• Języki publikacji: EN

Abstrakty

EN

In order to prevent hydrofoil colliding with cetaceans, the underwater speaker (UWS) has been installed to repel cetaceans. Yamada et al. (2012) analyzed and devised the UWS sound as it fits the cetaceans' acoustic properties to prevent the collision furthermore. The new UWS sound was devised and synthesized by Yamada et al. (2015) with expectation of avoiding collision with large cetaceans (Patent applied for, JP2014-171411). In this research project, the new UWS sound was investigated by the playback experiment on humpback whale (Megaptera novaeangliae) and by sighting survey in the actual hydrofoil shipping service route. As a result, a physiological and behavioral change of the humpback whale was observed in the playback experiment of the new UWS sound, and the chance of hydrofoil encountering cetaceans of the new UWS sound was smaller than that of the previous UWS sound. Therefore, the improvement of the new UWS sound was confirmed. Lastly, we wish this research project would contribute toward the safer cruise of hydrofoil in the future.

Słowa kluczowe

EN

Underwater Speaker (UWS); Hydrofoil; Underwater Speaker Sound; Humpback Whale; New Sound; Cetaceans; Acoustics; Hydroacoustics

• Wydawca: Faculty of Navigation, Gdynia Maritime University
• Czasopismo: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
• Rocznik: 2015
• Tom: Vol. 9, no. 2
• Strony: 207--211
• Opis fizyczny: Bibliogr. 3 poz., rys., tab.

Twórcy

autor

Nakashima T.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Kobayashi N.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Yamada H.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Katsumata T.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Yoshida R.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Kato H.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Okabe H.

• Okinawa Churashima Foundation, Okinawa, Japan

autor

Kawazu I.

• Okinawa Churashima Foundation, Okinawa, Japan

autor

Yanase Y.

• KHI JPS Co., Ltd., Kobe, Japan

autor

Omine M.

• KHI JPS Co., Ltd., Kobe, Japan

autor

Terada M.

• KHI JPS Co., Ltd., Kobe, Japan

autor

Sugioka H.

• Japan Agency for Marine‐Earth Science and Technology (JAMSTEC), Yokohama, Japan

autor

Kyo M.

• Japan Agency for Marine‐Earth Science and Technology (JAMSTEC), Yokohama, Japan

Bibliografia

• 1 Laist, D. W., Knowlton, A. R., Mead, J. G., Collet, A. S. and Podesta, M. (2001), COLLISIONS BETWEEN SHIPS AND WHALES. Marine Mammal Science, 17: 35–75. doi: 10.1111/j.1748‐7692.2001.tb00980.x
• 2 Yamada, H., Kagami, L., Yonehara, Y., Matsunaga, H., Kato, H., Terada, M., Takahashi, R., Okanoya, K., & Kawamoto, T.: Estimation on Audibility of Large Cetaceans for Improvement of the Under Water Speaker. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 6, No. 4, pp. 589‐593, 2012
• 3 Yamada, H., Kobayashi, N., Nakashima, T., & Kato, H. (2015), Development of the Effective Underwater Speaker Sound Modulated by Audible Sound Frequency Range of Large Cetaceans for Avoidance with Ship Collision. 2015