Working in the lazarette.

[CharlieO.]

This is the area under the water tanks. Concrete that was glassed over. I removed the broken fiberglass and loose concrete and poured new over top. After curing will fair a bit and refiberglass the top and up the corners.

 

[HeadedToTexas]

Will that be all storage now, or are the water tanks going back in?

 

[North Baltic sea]

Hi,

stupid question, why used concrete before?

NBs

 

[CharlieO.]

Will that be all storage now, or are the water tanks going back in?

Putting the water tanks back in. The area is not very accessible for storage once all the steering gear gets back in there.

 

[HeadedToTexas]

Roger that.

 

[Greg QS]

Most likely the concert was used as a leveling agent to make a flat solid platform for the water tank. Quick super strong and easy.

 

[CharlieO.]

Hi,

stupid question, why used concrete before?

NBs

Why did the builder use concrete? --- This boat has concrete ballast In the keel and maybe needed a few hundred pounds back there too.

Or why did I leave some of the used concrete in place? -- I left the used stuff in place to lessen my trips up the ladder (on stands right now) with five gallon buckets of concrete. It will be encapsulated with fiberglass again.

 

[RT Firefly]

Greetings,
Mr. G And cheap!

 

[Cleanslate]

Hmm , pretty cool. Never gave it a thought. Makes sense I’ll be darn I learned something.

 

[Pete Meisinger]

I imagine that is exactly what I would find if I removed my water tanks. I try not to think about it.

pete

 

[O C Diver]

Tip of the hat to the OP. Lot of owners when discovering that, would ignore it. Solve problems before they mushroom into bigger ones.

Ted

 

[alormaria]

Strange since we have sister ships that I didn't find any concrete in the lazarette. My floor is solid fiberglass but follows the angle of the hull.
I did replace crumbling plywood leveling blocks on which sat the water tanks.



You must have the high-buck version.

 

[RT Firefly]

Greetings,
Mr. a. We also had a '74 MT, DC ( I think yours is a similar vintage-"75, perhaps) and no concrete OR water tanks in laz' Our tanks were under the aft berths.

 

[Comodave]

Ok, so now you can hire out as a mason???

 

[CharlieO.]

Ok, so now you can hire out as a mason???

Sure thing... this is my second concrete job on this boat.

It's interesting learning the construction of these boats, and if I were to shop for another one I'd know exactly where to look for trouble areas.

 

[Comodave]

Who would ever imagine having to do concrete work on your boat…

 

[tiltrider1]

Who would ever imagine having to do concrete work on your boat…

Every ferrocement boat owner.

 

[Comodave]

Every ferrocement boat owner.

Are there any of them left?

 

[North Baltic sea]

Hi,

thaks your answer...

NBs

 

[sunchaser]

Just curious, are there any negatives to having a forever damp/wet zone between the concrete and the FRP hull?

 

[CharlieO.]

Just curious, are there any negatives to having a forever damp/wet zone between the concrete and the FRP hull?

Not that I could see. In the pics you can see on each side I went to the fiberglass hull in an area. Under the concrete looked like brand new fiberglass.

 

[rslifkin]

I'd think the biggest concern would be having enough water anywhere in there to cause freeze expansion damage during winter storage. As long as that's not an issue I wouldn't be worried.

 

[CharlieO.]

I'd think the biggest concern would be having enough water anywhere in there to cause freeze expansion damage during winter storage. As long as that's not an issue I wouldn't be worried.

I believe that is what caused this issue. Also had the same type of issue in the bilge floor, that I already repaired and took the opportunity to form a small sump lower for my bilge pumps to sit in.

 

[SeaMoose]

Hi Charlie
I painted my concrete under the aft cabin with 2 coats of Kilz rather than glass over. Something to think about, wont trap water…

Alan & Darina

 

[Blissboat]

Are there any of them left?

Hah! Good question. There certainly must be, but I have to admit it's been a loooong time since I've noticed any ferrocement yachts, anywhere.

 

[RT Firefly]

Greetings,
Mr. s. Re: Your post #20 regarding "...forever damp/wet zone...". Other than the freeze/thaw cycle Mr. rs mentioned, one, albeit remote, possibility is the growth of mildew/microbes which may reach a biomass sufficient to break the fiberglass layer(s) thus spreading toxins throughout the vessel. Just sayin'....

 

[slowgoesit]

Every ferrocement boat owner.

Are there any of them left?

I can see one from my dock. About 60' ferrocement, give or take. Not a bad looking boat, but I've never seen it move.

 

[Comodave]

I can see one from my dock. About 60' ferrocement, give or take. Not a bad looking boat, but I've never seen it move.

Maybe afraid to move it???

 

[Greg QS]

As opposed to the water on the outside? LOL

 

[Circumnavigator]

Who would ever imagine having to do concrete work on your boat…

Fintry and all of her sisters have concrete in various places for trimming ballast. When we put in new freshwater tanks, we had to jackhammer out concrete -- about 20,000 pounds of it. The guys doing the work quickly got tired of carrying it ten feet up to the main deck and then down 20 feet to the deck of the railway, so they torched a hole in the side. That's one good thing (among other good things and some bad) about steel -- if you need to move something in or out, just cut a hole.


The bow compartment was a water ballast tank. We put the bow thruster there, so she now has lead encased in concrete to provide the weight to keep the bow down.


Jim