Re: NASA log fouling -- The Trapper Owners Association Archive Forum

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23/07/03 14:51:33 [ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, 5, 6, [7], 8, 9, 10 ]

Subject: Re: NASA log fouling

Author:
Brian Henry
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Date Posted: 14/11/04 19:45:41
In reply to: John Larke 's message, "NASA log fouling" on 14/11/04 18:57:00

One would certainly expect this to work, IF the material could be induced to adhere to the paddle-wheel. I too, have this problem and have to withdraw and clean the transducer when cruising or removing it when leaving the boat for more than a few weeks, so I was interested in this possible solution.

However, trawling the internet I found some discouraging news from the Australian Maritime Safety Authority, viz.:

"Concerns about the toxicity of, not only TBT, but all antifouling biocides has stimulated research and development of non-toxic, fouling release coatings. Also called minimally-adhesive or non-stick coatings, these coatings have surface characteristics which minimise the strength of adhesion of fouling organisms ... The first fouling release coatings incorporated PTFE (Teflon�) but, despite these coatings having low surface energy, the surface microtexture enabled organisms to establish mechanical interlock."
http://www.amsa.gov.au/About_AMSA/Corporate_information/AMSA_speeches/Shipping_In_The_Asia-Pacific_Conference/Ship_Anti-Foulants_Tributylin_and_Substitutes.asp

'Close, but no cigar'.
Hand-held GPS units are cheep, cheep, now - much more accurate...!

Regards,

Brian.

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Replies:

Subject Author Date

Re: NASA log fouling paul barber 15/11/04 11:11:31

Re: NASA log fouling Frank Marsden 15/11/04 18:15:39

Re: NASA log fouling -- Brian Henry, 15/11/04 19:05:20

Re: NASA log fouling -- Frank Marsden, 16/11/04 8:11:41

Re: NASA log fouling -- Brian Henry, 16/11/04 9:56:05

Re: NASA log fouling -- Frank Marsden, 16/11/04 21:15:04

Re: NASA log fouling -- Brian Henry, 17/11/04 8:42:40

Re: NASA log fouling -- Nick, 17/11/04 19:21:47

Re: NASA log fouling -- Brian Henry, 17/11/04 20:40:02

Re: NASA log fouling -- Frank Marsden, 17/11/04 21:17:00

Re: NASA log fouling -- Brian Henry, 17/11/04 21:59:02

Re: NASA log fouling -- Frank Marsden, 20/11/04 12:22:17

Re: NASA log fouling -- Brian Henry, 20/11/04 15:19:45

Re: NASA log fouling -- Feank Marsden, 20/11/04 15:38:14

Re: NASA log fouling -- Brian Henry, 20/11/04 19:53:04

Re: NASA log fouling -- Frank Marsden, 20/11/04 22:43:36

Re: NASA log fouling -- Nick, 18/11/04 0:32:15

Re: NASA log fouling -- Brian Henry, 18/11/04 7:23:37

Re: NASA log fouling Nick 16/11/04 9:11:22