1972 - 16' Fiberform Columbia resto (photos) - opinions about a few issues needed

NWLundguy

Cadet
Joined
Apr 16, 2009
Messages
12
I live on the Puget Sound (salt water) and keep a boat on a mooring buoy in front of my house from June to August. Mission profile; crabs, salmon, waterfront restaurants, evening ?wine sip? shore cruising. We had a Lund ProSport, but it was too fancy, and took too much work to fend off Mother Nature?s hands; dining mammals, salt corrosion. I decided to search C-list for a basic, generic fiberglass closed bow fixer; no enclosed storage areas, all vinyl interior. Here it is -- a real nice 1972 Fiberform 16? Columbia that has been in storage for 16 years. The hull has never been beached, so the keel doesn?t have a single scratch. Everything is original. The original outboard motor was seized up, so the executor of the estate bolted on an old 25hp for sales appeal - (gave it to a friend). Dreaming about a new Yamaha F70, but reality is a nice 1984 Johnson 70hp already waiting on a stand in my shop.

I?m going to raise the transom and replace the vinyl interior because it is falling off, and has shrunk. Otherwise, the boat is pretty ship-shape ? well, until a snow storm dumped a foot, and caved in the tarp, and filled it with water. I was lax about draining it out and re-securing the tarp, so the aft 4 feet of the floor got wet. I pulled out the vinyl last night (came out easily) and realized the ?? plywood floor was wet/moist below the fiberglass mat top coat, but only in the stern. The factory fiberglass mat was already cracked and lifting in a few spots so I peeled sections of it up.

Question 1 ? The floor has a pronounced crown (see photo of 4? carpenter?s level). I?m wondering if this is a design characteristic, or signs of hull deformation from sitting on the trailer or (?). The executor said the boat spent most of its life on a dolly in a local boathouse. Let me know if you have similar in your boat. I?m wondering about how difficult it will be to replace the stern floor section, given the crown. Read on?

Question 2 ? The douglas fir plywood has a few black stains from fasteners (fuel tank and battery hold downs), otherwise it is very sound, but pronounced red/pink in color. I have seen other floor replacement Iboat post photos showing rotten ply that is very red. I had the heat lamps and fan going all night and I can?t find a soft spot or delamination anywhere. I removed two of the putty plugs where the OEM squirted in the sub-floor floatation foam, but find no water inside. Comments on color; die, preservative, rot, other?

Coments? ? I?m now thinking of carefully cutting around the edges of the fiberglass mat with a die grander cut-off wheel, and then peeling it up for moisture evacuation, then replace with mat or fabric (epoxy or resin). Going this far? thoughts on replacing the rear floor section? The floor is in two sections; definite splice visible in the middle (perpendicular to centerline). I hate the thought if installing $300 worth of nautolex vinyl if the floor is a question.

I?m trying to make this little runabout weather tight, and it will have a canvas mooring cover made for it to shed water and discourage the otters (a serious boat mess making mammal here).

Sorry for the long post, thanks for reading.

Sincerely, Brian, Bainbridge Island, WA

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Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,926
Re: 1972 - 16' Fiberform Columbia resto (photos) - opinions about a few issues needed

Welcome to iBoats!!!!

I LOVE your Boat!! She is almost a TWIN of my 1961 Flamingo!! You can click the link in my signature to see Her. Some questions for you.
Does your Deck have ANY soft spots when you walk on it? The Crown COULD be normal design. The fiberglass Delam is NOT a good thing. Try NOT to let any more water in there and get a fan in there with a tarp over her to get her drying out. You should also drill some 3/8 inch holes in the transom as low down as you can get and about 3/4 inch deep (Careful not to go all the way thru) and see what kind of shavings you get. if they are dry and light brown that is GOOD! if they are dark brown and WET NOT GOOD. If the deck is soft and spongy when you walk on it then you will need to replace it and there is a good possibility that the stringers below will need to be replaced as well. The good news is there are plenty of examples here on the forum and plenty of people to help you get it all done. That is a GREAT looking old Girl and I will Help you all I can to bring her back to LIFE!!!!
 
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