water ready
- Thread starter big_sean
- Start date
mark
Well-known member
antifoul - basically a paint you slap on the underside of a hull which contains lots of toxic nasties to stop anything growing on it. If you want to see what difference it makes and your near the royal quays, have a look along at the small boats, you'll easy see those that do and those that don't!
if you leave a boat in the water too long without it the weed/barnacles/keel worms will start to break down and rot the gel coat and fibreglass, plus the extra weight/drag of all that lot affects performance hugely
not as toxic as it used to be though
if you leave a boat in the water too long without it the weed/barnacles/keel worms will start to break down and rot the gel coat and fibreglass, plus the extra weight/drag of all that lot affects performance hugely
not as toxic as it used to be though
codseeker
Well-known member
cheers mate , well explained ,but whats this
http://www.nauticalweb.com/info/maint/osmosi_e.htm
http://www.nauticalweb.com/info/maint/osmosi_e.htm
It's what ya get on ya tongue when ya talk sh1te lmao
mark
Well-known member
osmosis! your fibreglass is rotting - sort of
teeny tiny bits of water getting under the gelcoat and into the fibres of the matting and cause them to separate so it looses strength and the ability to keep water out, in bad cases the inside of a hull will be wet to the touch as water continuously seeps in, tiny little blisters on the gelcoat are a good sign of osmosis. bigger blisters which re wet if you pop them are a sign that the osmosis is in deep
think of how plywood de-laminates when it gets damp, similar sort of thing
not as critical on motor boats as yachts, which suffer extreme amounts of pressure on the keel and have been know to fail catastrophically. Worked on a yacht that lost one of its keels through osmosis once. they were trundling along heard a big creaky groan then the boat went sideways as the keel separated. Rudders and rudder posts are the other area where osmosis can have nasty and sudden effects
can be treated, just grind out the effected area leave it on the hard to dry out for 3 months then re-glass and renew the gelcoat. my other boat has a small patch of osmosis on the transom, not too worried yet, as its only superficial, will take the gel coat off in September and redo it
mark
Well-known member
pretty much, they tend to appear together as well like a rash - the worse the rash the worse the osmosis
the sneaky thing about osmosis is that the damage is done when the thing is made, but can take years to show itself, so a brand new boat might be a bit iffy in the construction, but you won't find out for years
the only 100% certain way of checking out the construction quality of a brand new boat is by using one of them there magic boxes that marine surveyors use, it will tell you the thickness of the hull, if there are any tiny air pockets in the laminate (which is where most osmosis starts from) and the moisture content of the hull. but marine surveys don't come cheap
but if you're spending big money on a boat I wouldn't hesitate to get s surveyor out
osmosis is curent in any living plant cell like mould ect .we get alot of osmosis on leeks and onion plants growing for show standrds
the solution is to spary the plants with a fungiside .
so the same could be applyed to the area in a boat i presume.
anti bactira disinfectant may work ' as common domestos works on leeks and onions at a required rate.
the rate for spraying live plants is 1 pint of domestos to 45 gallons.
for eradicating soil disiese ect its 2 pints of domestos to 45 gallons .
this kills all spores ect so may be good i dont know but thought id add it
the solution is to spary the plants with a fungiside .
so the same could be applyed to the area in a boat i presume.
anti bactira disinfectant may work ' as common domestos works on leeks and onions at a required rate.
the rate for spraying live plants is 1 pint of domestos to 45 gallons.
for eradicating soil disiese ect its 2 pints of domestos to 45 gallons .
this kills all spores ect so may be good i dont know but thought id add it
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