hull integrity question

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
In writing that last post I had a bit of an epiphany. I'm just going to rig up one of those ignition kill tethers like what they have on a jet ski. I will tie it from the engine to the stringer. Then the engine will kill instantly.
 

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
Well gentlemen, I couldn't take the suspense anymore. I pulled back the carpet and chipped away some wood and although the wood cam out rather easily, the wood is dry underneath, except for a small patch just above the fuel tank. I took a hollow pole and drove it through the foam all the way down to the hull, and the foam is clean and dry. The hull in the section underneath the rot seems dry. The wet spot I spoke of earlier was part of the stow located under the walkway to the bow.
I forgot to bring home my dial guage, but realized that I could just close the middle window and watch the clearance between the window and the frame. The hull seems to flex about 1/8" with the bow moving up and down about 3-4 feet. I was in some mid size swells at about 20km/hr. Once I got it on plane, flex was not so observable, until you hit a random wave, then once again about 1/8" max. There is about 1/4" clearance between the window frames whether the boat is in the trailer or on the water.

I am starting to question my assessment of the stringer, as I was in a hurry and drilled the hole out at dusk. I didn't feel any wetness to the wood, because not a lot of it came out. I said it was wet because it looked wet. The color was a little darker than I expected, but I think that I was expecting it to be rotten so I didn't spend enough time there.

I have to wonder if a fuel leak caused the wood in the floor to get soft? Would fuel vapour cause the plywood adhesive to disbond?

I am going to drill another hole in the stringer during daylight and get a better look at the wood.

It looks like I may be moving backwards in my 12 step process. Heading back towards denial........
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
49,538
you could be lucky and the soft spot in the floor is from somehing being screwed down thru the deck for years without proper sealing.
 

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
That's a good point Scott. Based on what you guys have told me, if the floor rot were a symptom of a bigger problem underneath, then once removing the floor (about a square foot was removed) I should be able to see a larger rotted area underneath. The fact that the floatation foam still looks like it was sprayed yesterday I am hoping is a good omen.
As for the decking, I find it odd that there is no fiberglass on top of the wood. Looking at the fuel tank, it appears to be aluiminum as I can see some white oxidation on the outside of the tank. There is also an airspace around the tank too, so I have to wonder if the floor and fuel tank have been replaced in the past. If unsealed fasteners can cause this issue, then it would make sense.
Am I correct in assuming that the original tank would have been galvanized steel and the original decking should have a fiber overlay?
 

500dollar744ti

Senior Chief Petty Officer
Joined
Jul 23, 2012
Messages
691
OP, you are thinking too much! Get back on the water and stop thinking so much. If you need to rebuild your boat, you'll find out soon enough.
 

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
OP, you are thinking too much! Get back on the water and stop thinking so much. If you need to rebuild your boat, you'll find out soon enough.

You are right. I am thinking too much. The thing is though - If I am going to get on the water and enjoy myself, I cant be constantly worrying about everything.

I hear so many stories of unsuspecting boat owners that get surprised with all of these problems.....

It is good that you guys have gone through this before to some extent. I appreciate the patience you have shown me. I know I obsess about stuff a bit.

Cheers,
 

java230

Petty Officer 1st Class
Joined
Jul 18, 2013
Messages
295
I hear so many stories of unsuspecting boat owners that get surprised with all of these problems.....


Cheers,

For all the ones you hear about there are 20 million more that go out with a rotten boat and have no idea, and no issues.
 

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
I recently mounted a kicker bracket to the transom. When the wood chips came out I thought "S$#t! - this looks like the stringer". What I thought was wet was just darker, yellowish wood. It was very dry and the transom is solid, so I went back to the stringer (which I checked at dusk so I figured I would double check in good light). The stringer is also dry, it was just the color that threw me off. I was expecting a rotten boat so much that as soon as I saw the darkish wood colour, I thought she was a wet one.

I had a guy at my house 2 days ago buying some cabinets I was selling. He asked me for a business card to my shop, so I went inside to get one and when I came back out, he was poking around my boat. Turns out he has been an avid boater for a long time and has owned many boats. His comments were that the boat's structure was in exceptionally good condition for the age of it.

Having said all of this, after finding dry, solid wood, I feel comfortable running the boat for the remainder of the season. Comes winter I am putting in a new floor for sure, so I will drill the stringers and bulkheads out all the way up and look for rot at that time. Time will tell if I have a rotten boat, but I think that I got lucky.

Thanks all!
 

jigngrub

Fleet Admiral
Joined
Mar 19, 2011
Messages
8,155
Still workin' on that denial eh Vinnie?;)

When you remove the decking and foam from the soft we'll talk reality.:faint2:
 

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
lol Jig. I'm not working on denial, - working on evidence. The soft floor I think was ply disbond from fuel vapour from the fuel leak that I found and repaired. I will admit that I have drilled the stringers out, but the exposed wood framing that is under the floor is in good shape. I haven't found any solid evidence that the boat has a soft spot the only thing driving my suspicions was my own paranoia. I have lots of that:eek:
 

vinnie1234

Petty Officer 2nd Class
Joined
Jul 7, 2014
Messages
161
I will admit that I have drilled the stringers out, but the exposed wood framing that is under the floor is in good shape. :

What I meant to say is: I haven't drilled the stringer out all the way up to the bow. Just in the engine compartment...
 

jigngrub

Fleet Admiral
Joined
Mar 19, 2011
Messages
8,155
What I meant to say is: I haven't drilled the stringer out all the way up to the bow. Just in the engine compartment...

I realized that... and we're saving the mid-ship section of the stringers as a surprise for you!:flame:... but hey, the may be good too!


... and monkeys might fly out of my butt later on too.:fish: (that's a frozen Pickeral by the way)
 
Top