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Sailors Powerboat

Created by lydia lydia  > 9 months ago, 16 Apr 2022
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lydia
lydia

1927 posts

16 Apr 2022 3:08am
For those thinking a displacement powerboat might be a good move going forward (mean as they get older) here is renovation by Boty at present.




Achernar
Achernar

QLD

395 posts

16 Apr 2022 6:22pm
Nice,

But what do you call the planking? Its not clinker, not (typical) carvel. Maybe carvel with something else (softwood?) added to the seams. Carvel-plus?
UncleBob
UncleBob

NSW

1301 posts

16 Apr 2022 6:43pm
Select to expand quote
Achernar said..
Nice,

But what do you call the planking? Its not clinker, not (typical) carvel. Maybe carvel with something else (softwood?) added to the seams. Carvel-plus?


Could it be splined carvel?
lydia
lydia

1927 posts

16 Apr 2022 5:24pm
Not originally splined.
Now splined, so traditional carvel otherwise
Splines not yet trimmed.
john24
john24

84 posts

16 Apr 2022 5:33pm
Select to expand quote
UncleBob said..

Achernar said..
Nice,

But what do you call the planking? Its not clinker, not (typical) carvel. Maybe carvel with something else (softwood?) added to the seams. Carvel-plus?



Could it be splined carvel?


Agree with Bob, originally carvel, it has been splined in the restoration replacing the caulking. I think with this method it is normally encapsulated in epoxy /dynel or fibreglass as there is no caulking to take up the expansion and contraction as the moisture in the timber changes.
I'd be interested in how successful this method is in bringing back to life a old carvel hull. I suppose if the encapsulation is done right, it ends up similar to a strip planked boat.
Ramona
Ramona

NSW

7737 posts

17 Apr 2022 8:20am
A few weeks ago there was a superb old motor sailer on the slips. The hull had been splined with epoxy filler instead of the normal timber strips and sheaved in epoxy and cloth. The finish was excellent.
PhilY
PhilY

NSW

157 posts

19 Apr 2022 9:58am
CC, are you keeping Pete Busy? Will be great when finished.
lydia
lydia

1927 posts

22 Apr 2022 5:05am
Select to expand quote
john24 said..

UncleBob said..


Achernar said..
Nice,

But what do you call the planking? Its not clinker, not (typical) carvel. Maybe carvel with something else (softwood?) added to the seams. Carvel-plus?




Could it be splined carvel?



Agree with Bob, originally carvel, it has been splined in the restoration replacing the caulking. I think with this method it is normally encapsulated in epoxy /dynel or fibreglass as there is no caulking to take up the expansion and contraction as the moisture in the timber changes.
I'd be interested in how successful this method is in bringing back to life a old carvel hull. I suppose if the encapsulation is done right, it ends up similar to a strip planked boat.


Not encapsulating, not a fan of that at all.
The soft spline takes up expansion and contraction.
there are many carvel boats splined at original build.
Here the caulking was original and 50 years let so it all needed to come out anyway.





This one was splined since new, celery top planking and no sheathing.

woko
woko

NSW

1770 posts

22 Apr 2022 6:37pm
As far as I can ascertain the 1963 AWB were woven glass epoxy sheathed to the waterline from the build, not sure about the material used for the splines. Wheel house & coach house manufactured from ballistic resistant material. And very similar lines to the head line boat. ( hull speed 9.5 knots can be achieved with a DD 471, light ship )










Ramona
Ramona

NSW

7737 posts

23 Apr 2022 8:11am
Select to expand quote
woko said..
As far as I can ascertain the 1963 AWB were woven glass epoxy sheathed to the waterline from the build, not sure about the material used for the splines. Wheel house & coach house manufactured from ballistic resistant material. And very similar lines to the head line boat. ( hull speed 9.5 knots can be achieved with a DD 471, light ship )











They had a copper sheet to the waterline.

www.boatregister.net/WW2_ArmyWorkBoats.html

My old old boat, ex Doreen is down the bottom of the page.
woko
woko

NSW

1770 posts

23 Apr 2022 7:52pm
Select to expand quote
Ramona said..

woko said..
As far as I can ascertain the 1963 AWB were woven glass epoxy sheathed to the waterline from the build, not sure about the material used for the splines. Wheel house & coach house manufactured from ballistic resistant material. And very similar lines to the head line boat. ( hull speed 9.5 knots can be achieved with a DD 471, light ship )











They had a copper sheet to the waterline.

www.boatregister.net/WW2_ArmyWorkBoats.html

My old old boat, ex Doreen is down the bottom of the page.


Yes that was the WW2 spec. From conversations I've had the small run of boats built in 1963 - 64 used modern materials, or perhaps it was epoxy sheathed while in service ? either way a 1st class job. The boats with that particular wheel house arrangement where done at the Phoenix boat works Launceston, I've tried to get more info about that yard and the AWBs they produced to no avail, perhaps the brains trust may be able to shine a light ?
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