NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Noisy Sea Surface
From: Chuck Taylor
Date: 2003 Nov 15, 19:24 -0800
From: Chuck Taylor
Date: 2003 Nov 15, 19:24 -0800
Keith Williams wrote: > The noise appears to come from all parts of > the hull below water. That reminds me of another kind of underwater noise I once heard. Our 32-foot wooden Grand Banks trawler was moored to a buoy at James Island State Park (north of Seattle, WA, east of Victoria, B.C.) one early October evening a couple of years ago. As my wife and I were about to retire for the evening, we heard a mechanical noise coming from somewhere low in the vessel. It sounded like a pump running. I checked all the pumps on board, but couldn't locate where the noise was coming from. Finally we realized that what we were hearing was mechanical noise from a ferry boat passing about a mile away. The sound from the ferry was transmitted through the water and through our wooden hull. It reminded me of a scene from one of those old WWII submarine movies where the sonarman listened to the propeller and engine noises from the surface ships. Chuck Taylor Everett, WA, USA __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree
