Weebles has offered up some photos of a wooden Vee bottom hull in I’d guess Mexican yard and further speculate is a commercial passenger or sport fish. He states it would take 15 years to conduct a full rebuild and would require removing all planks ? That the fuel tanks crushed the chine logs and broke about fifteen frames on each side.
Boat is a 1982 McQueen 80-something foot motoryacht, built in BC. What I meant about the 15-year comment is the repair was not intended to be a 'forever-like-new' repair, more one that would last another 15-20 years and then likely need to be repeated. The ribs were sistered vs rebuilt which is a significantly more intricate process as all planking must be removed to gain access to the ribs.
It's not that the fuel tanks broke the chine logs, but the weight of the 1500g of fuel - 5-tons - contributed to the travelift strapes crushing the chines. The yard will pump-out the fuel before re-launch. I'd reckon that large wooden boats should be hauled on a railway where point-loads of a travelift can be avoided. There are not many railway-yards left in California, and few yards will haul a wooden boat for several reasons not the least of which is they tend to crush if the superstructure isn't sound.
EDIT -
The vessel has typical single sawn frames with perhaps some intermediate frames in between as seen in #1 photo. The fracture is really separated and weathered which is kind of odd if the boat had been wet recently. There is photo evidence of previous repairs and what looks like top strap frame repairs. #2 you can see the bandsaw marks on the deep pine stringer but no tank so I’m guessing they were already removed. #4 is very telling as it shows a really advanced condition known as ‘ brown rot ‘. This is condition where the fungal mold destroys the cellulose leaving crumbly wood remnants that resemble charred or cubical appearance. This indicates to me that the boat has probably been out of the water or very dry for a long long time. However I see a white painted edge on a member that makes no sense. There shouldn’t be any painted surfaces in this part of the bilge so things have been moved around making it difficult to figure.
The vessel appears to be mid-Atlantic built of hard Southern yellow pine with Vee bottom, sawn frame hard chine and double set of major deep stringers. My guess is she was a passenger or sportfish boat. Anyway you look at it, it’s certainly not a representative example of a wood boat problems. It is however a splendid example of extreme rot and localized frame failure for this type of hull construction.
Rick, if your comments about pics were directed at the pics I posted, all I can tell you is I watched the boat arrive under her own power, get picked out of the water, and blocked. She was not dry, not an east coast boat, tanks were in-place, construction was mahogany not yellow pine. The fuel tanks rest on heave longitudinal stringers that had pressed into the ribs and deformed the planking upon lift. The owner was unable to find a yard in SoCal that would haul the boat and thus ended-up in Ensenada and signed a release prior to being hauled.
While dated, this boat appeared to be in good condition - something of a time capsule. Exterior needs paint as is normal for a 40-year old wood boat. There was little hint that the super-structure/ribs were as bad as they were. It is from a Canadian builder of decent reputation. I would consider the scantlings a bit light - I am told by someone who was very familiar with McQueen's that the boat was meant to be relatively lightweight to keep speed up.
Not sure what your point was in calling this out. I was there, you were not. I watched the repair transpire over the course of 2-months (and going) and know the carpenter reasonably well- a 60-year old guy who has been working on wooden boats on/off for 40-years. There is no BS in my post nor the pictures. The rotted/crushed/broken ribs were not easily visible due to the fact that rot often manifests from the inside-out, and they were hidden by large fuel tanks.
But hey, buy all the wooden boats you want. But I believe it fair game to call-out instances of hidden repair.
Peter