Alloy yachts

[d design]

Thats really sad. I think welding in new metal is the way to go. Im currently glueing new wood into my boat what sort of grade of al alloy is used to build these boats? Imagine building a boat out of 7075 T9 the Japanese Zero fighters were made of 7075 and they went through a lot of stress and straining.

[d design]

When I buy a boat or a friend is gona buy a boat, I go around with an inspection hammer and tap everywere. I can recognise the different frequencies and when I hear low frequencies I get a bigger hammer and start bashing it until all the rot falls out and the buyer thanks me for saving their ass.

[atoll]

Originally Posted by goboatingnow

Atoll the whole bottom of that boat is compromised. Potentially the diesel tanks are compromised. The materials and labour are more then the boats worth. The whole bottom needs replating .

She bought a POS.

Dave

presumably there were people telling her not to buy a POS in the first place,but she chose not to listen........

she could just wack a coat of epoxy and cloth over the bottom and be good to go if she is just living the dream...........

[d design]

Originally Posted by atoll

presumably there were people telling her not to buy a POS in the first place,but she chose not to listen........

she could just wack a coat of epoxy and cloth over the bottom and be good to go if she is just living the dream...........

Dont forget the bog

[goboatingnow]

Originally Posted by atoll

presumably there were people telling her not to buy a POS in the first place,but she chose not to listen........



she could just wack a coat of epoxy and cloth over the bottom and be good to go if she is just living the dream...........

Long day is it, atoll, ..... Not feeling the love, bad hair, or something

Dave

[atoll]

Originally Posted by goboatingnow

Long day is it, atoll, ..... Not feeling the love, bad hair, or something

Dave

i should probably explain my position better
,as i have 2friends/ customers,both single women who chose to buy large aluminium yachts,of the shoal draft variety.

neither have the slightest clue about the ins and outs of dc electircs
on their boats!
both are world class sailors,and single handers!

over the last few years i get phone calls from them in the middel of the night
asking about what might happen ,and will their boats corrode if such and such happens,or if it is okay if they just add a bit of wiring..........

i have no sympathy....buy a boat that you understand....and one that you can fix at your skill level.....or be prepared to pay others to do it for you .... or learn how to.......but don't phone me up in the middel of the night when you dropped a wire in the bilge

[d design]

Originally Posted by atoll

i should probably explain my position better
,as i have 2friends/ customers,both single women who chose to buy large aluminium yachts,of the shoal draft variety.

neither have the slightest clue about the ins and outs of dc electircs
on their boats!
both are world class sailors,and single handers!

over the last few years i get phone calls from them in the middel of the night
asking about what might happen ,and will their boats corrode if such and such happens,or if it is okay if they just add a bit of wiring..........

i have no sympathy....buy a boat that you understand....and one that you can fix at your skill level.....or be prepared to pay others to do it for you .... or learn how to.......but don't phone me up in the middel of the night when you dropped a wire in the bilge

Haha lol

[Celestialsailor]

Originally Posted by d design

What are the pros and cons of an aluminiun alloy yacht?

Originally Posted by d design

Not buying or building, just for intrest

Try the search option on the forum. The Aluminum boat topic has been covered multiple times.

[Celestialsailor]

Originally Posted by ozskipper

Old Aluminium that hasnt been cared for by previous owners. Sad for Nike ( her name not her shoes)

This should be the video everyone watches before taking on a prodject like this. I have built 3 steels from scratch, 2 of my own. On other steels I have seen the same as in the video, only slower. Not to say, I havn't had to deal with F/G issues, like delaming decks. I feel for the girl. She had a dream. Probably if she is a bottom buck person, it is best to strip it and try to recoup her money and start over. My opinion. After steel, I found F/G was more suited to my talents, even though I'm a Machinist and welder.

[Celestialsailor]

Originally Posted by d design

When I buy a boat or a friend is gona buy a boat, I go around with an inspection hammer and tap everywere. I can recognise the different frequencies and when I hear low frequencies I get a bigger hammer and start bashing it until all the rot falls out and the buyer thanks me for saving their ass.

If I was the owner of that boat and saw you bashing it with a hammer, I would turn it around and check your body out with the hammer and see what rot falls off.

[d design]

Then you would be charged with assult or murder depending on how hard you hit

[Celestialsailor]

Originally Posted by d design

Then you would be charged with assult or murder depending on how hard you hit

Yes...but no more rot...

[d design]

Are you trying to tell me im full of rot? I probably am but theres no point in showing your rot too

[atoll]

Originally Posted by d design

Are you trying to tell me im full of rot? I probably am but theres no point in showing your rot too

old saying...."men and ships rot in port".......it might be generic

[Andrew Troup]

Originally Posted by d design

Thats really sad. I think welding in new metal is the way to go.....

what sort of grade of al alloy is used to build these boats? Imagine building a boat out of 7075 T9 the Japanese Zero fighters were made of 7075 and they went through a lot of stress and straining.

Hulls are 5xxx, 6xxx OK above the waterline

As for making hulls from 7075: the boat would end up as a colander rather more quickly than the OP's clip

Copper is a deadly enemy to alu in a marine context, and in the case of 7075 (and the other common aerospace alloy, 2024) it's the enemy within. It is an alloying constituent, one which is apparently indispensable to very high tensile strength alu alloys.

"Constituent particle corrosion" is inevitable when these alloys are immersed in seawater. Particles containing copper become cathodic and attack the metal around them.

However 7075 does get used in marine applications, for instance for masts, notably by parents who wish smaller people sharing their surname to sail their Optimist (or whatever) into the record books.

And in due course, even 'normal' parents with more realistic aspirations for their kids feel compelled to emulate.

PS: I lost this post when i was about to send. The ability to continue typing was lost, and even scrolling the text - so I had to rewrite from scratch. Has happened now a couple of times, and I'm wondering if it happens when a PM comes through (a few moments later) - because that seems to be a common thread.

Anyone had this?