Analysis and Ranking of the Acoustic Disturbance Potential of ...
Analysis and Ranking of the Acoustic Disturbance Potential of ...
Analysis and Ranking of the Acoustic Disturbance Potential of ...
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Report No. 6945<br />
BBN Systems <strong>and</strong> Technology Corporation<br />
Table A.2.<br />
Representative Boat <strong>and</strong> Ship Source Level Data<br />
1/3 Octave Spectra, dB re 1 llPa at 1 m.<br />
>700 ft Icebreaker<br />
1/3 Oct. Tanker (transit)<br />
(Hz) (16 kts) (10 kts)<br />
12.5<br />
16<br />
177<br />
182<br />
157<br />
161<br />
20 173 161.5<br />
25 168 159<br />
31.5 165 161<br />
40 171 160.5<br />
50 174 162<br />
63 80<br />
175.5<br />
176.5<br />
173<br />
172<br />
100 177 173.5<br />
125<br />
160<br />
177<br />
176.5<br />
170<br />
169.5<br />
200 176 170<br />
250 175 166.5<br />
315 174 169<br />
400 173 165.5<br />
500 172 166.5<br />
630 171 166<br />
800<br />
1000<br />
170<br />
169<br />
167<br />
163.5<br />
1250 168 163<br />
1600<br />
2000<br />
167<br />
1.66 159.5<br />
159<br />
2500 165 156.5<br />
3 150<br />
4000<br />
164<br />
163<br />
155<br />
151.5<br />
5000 162 149<br />
6300<br />
8000<br />
161<br />
160<br />
146.5<br />
146<br />
10000<br />
12500<br />
159<br />
158<br />
143<br />
143<br />
16000 157 142<br />
Ref. - . (1)(2) (3)<br />
"Supplement a1 Data<br />
for Tanker (1)<br />
(Hz)<br />
2<br />
L<br />
208<br />
2.5 202<br />
3.15<br />
4<br />
195<br />
189<br />
5<br />
6.3<br />
187<br />
186<br />
8<br />
10<br />
187<br />
178<br />
Alaska Tug/Barge 1 10 f t 65 ft<br />
Ferry (2250 HP) Tour Boat Tour Boat<br />
(16 kts) (10 kts) (10 kts) (10 kts)<br />
142.7 142.7 118.6<br />
140 154 115<br />
143.3<br />
146.8<br />
150<br />
139.5<br />
153.1<br />
145<br />
112.4<br />
111.4<br />
153.4<br />
162.5<br />
141.2<br />
139.6<br />
138.8<br />
134.7<br />
120.6<br />
121.3<br />
165.6 142.8 137.4 114.2<br />
154.7 144.4 136.2 124.3<br />
159.4 148.8 135.3 125.4<br />
163.5 156.8 142.7 121.8<br />
170.7<br />
162.6<br />
156.8<br />
157.6<br />
142.5<br />
146<br />
134.4<br />
128.1<br />
159.3 156.8 148.5 135.9<br />
158.7 159.3 149.1 135.1<br />
159.5<br />
161.4<br />
160.1<br />
160.5<br />
150.8<br />
152.4<br />
138.8<br />
139.4<br />
162.3 160.8 155.5 140<br />
161.8 163.5 159.3 138.5<br />
159.4<br />
158.8<br />
161.2<br />
156.3<br />
149.9<br />
153.4<br />
139.2<br />
145<br />
158<br />
156.1<br />
157.7<br />
157.5<br />
157.5<br />
155.8<br />
148.4<br />
149.7<br />
155.2 157.3 157.3 148.1<br />
155.2 156.7 158 145.6<br />
153.8 156.2 155.7 146.2<br />
153.2 155.3 156.5 143.6<br />
152.4 154.5 154.6 144.8<br />
151 $3 155 156.7 143<br />
150<br />
147.8<br />
154.6<br />
153.6<br />
155.4<br />
154.4<br />
140.9<br />
139.4<br />
146.8 152.6 154.1 137.8<br />
143.8 149.3 152.8 ; 34.4<br />
(4 (5) (6) (7)<br />
( 1 ) cybulski 1977<br />
(2) Heine <strong>and</strong> Gray 1977<br />
(3) Miles et al. 1987<br />
(4)-(7) Malme et al. 1982
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