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Old 30-10-2021, 08:37   #16
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Re: Macintosh 47

If there’s ever been a thread that needs photos, this is it!

I love those boats.
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Old 30-10-2021, 08:43   #17
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Re: Macintosh 47

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If there’s ever been a thread that needs photos, this is it!

I love those boats.
yeah there is not much out there on them.
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Old 30-10-2021, 13:47   #18
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Re: Macintosh 47

Looks a nice boat... but when you get her hauled, tell us if there are keel bolts or if the ballast is encapsulated. Seems to be a difference of opinion expressed in the posts upthread!

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Old 30-10-2021, 14:09   #19
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Re: Macintosh 47

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Looks a nice boat... but when you get her hauled, tell us if there are keel bolts or if the ballast is encapsulated. Seems to be a difference of opinion expressed in the posts upthread!

Jim
OK, I said bolt-on but I don't really know. I thought that by looking at the lines. However, in photo 55 of 68 where the very fine back edge of the keel is shown, I'd say it would be very hard to mold a hull with a hollow keel which could then be filled with lead.

So I'll stand on my guess.
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Old 30-10-2021, 16:37   #20
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Re: Macintosh 47

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OK, I said bolt-on but I don't really know. I thought that by looking at the lines. However, in photo 55 of 68 where the very fine back edge of the keel is shown, I'd say it would be very hard to mold a hull with a hollow keel which could then be filled with lead.

So I'll stand on my guess.
The above is why the blind espousal of encapsulated keels conflicts with the realities of FRP construction. Kinda awkward to mold good shapes and retain structural strength.

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Old 30-10-2021, 17:00   #21
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Re: Macintosh 47

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The above is why the blind espousal of encapsulated keels conflicts with the realities of FRP construction. Kinda awkward to mold good shapes and retain structural strength.

Jim
Jim, the people who blindly espouse encapsulated keels don't care about "good shapes".
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Old 30-10-2021, 17:37   #22
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Re: Macintosh 47

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Jim, the people who blindly espouse encapsulated keels don't care about "good shapes".
Yep, that's likely the case! At least where keel shape is concerned...

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Old 31-10-2021, 02:55   #23
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Re: Macintosh 47

This is in the description of the construction of the boat

KEEL
Shoal and deep draft keels are one-piece poured lead bolted to the hull with eleven one inch stainless steel bolts.
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Old 31-10-2021, 03:30   #24
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Re: Macintosh 47

Some images of Macintosh 47's being built.

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Old 31-10-2021, 03:35   #25
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Re: Macintosh 47

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Old 31-10-2021, 03:40   #26
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Re: Macintosh 47



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Old 31-10-2021, 03:52   #27
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Old 31-10-2021, 03:57   #28
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Old 31-10-2021, 04:00   #29
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Old 31-10-2021, 04:03   #30
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