NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Noisy Sea Surface
From: Dan Allen
Date: 2003 Nov 16, 18:15 -0800
From: Dan Allen
Date: 2003 Nov 16, 18:15 -0800
On Nov 15, 2003, at 7:47 AM, Keith Williams wrote: > To clarify - I have only heard this noise when I have been down below > in > a boat. The noise appears to come from all parts of the hull below I heard the noise best when inside the boat. I thought it was the teak walls expanding when our air conditioning had been running at first. I would open the saloon door out to the aft deck and could not hear the sound, but later in the evening I stood upon the dock next to our vessel and could very clearly hear the sounds, almost as well as when I was inside the vessel. I think therefore that the area under the docks was also being effected by the krill as well as the hull of the vessel. The sounds had more of a scraping component to them than what the gas bubbles of a school of herring would have (I think). The captain of our vessel said that he stayed one night at anchor at Dragon Point (Indian Harbor Beach, FL, ICW mile 914) a year or two ago when the noise was so loud that they could not sleep as a result. The noise was so bad that he considered not staying at the same place again, but we needed to stay there again for this trip -- and of course there was no noise at all there this time. My observations were at the St. Augustine city marina.