Repairing hull after a grounding.

[gaiaguardian]

Looking at a ex-charter that had a grounding a year ago. (Helia 44) The yard sealed and repaired the exterior of the hull, but looks like there is some cracking / spider-webbing on the interior of the hull above the keel. Seems to me this would have been a fairly substantial grounding. Other than some hull / glass repair, how concerned should I be about this damage?

[Bill O]

Would be helpful to know the type boat? Looks like fairly extensive damage.
Did you check out to see if the grid was damaged/separated?

[gaiaguardian]

Boat is a Helia 44, I'm hoping the broker will share a recent survey with me here soon. I'm hoping to gather some info about things I can check on when I get out to it's location. (I'll need to travel).

[bil56]

this boat probably hit hard, there may be structural damage...

[Pandor]

May be structural damage? Isn’t that a photo of the trailing edge of the keel with a split down the middle and gobs of sealant at the aft end of the hull joint?

[coopec43]

https://sailboatdata.com/sailboat/helia-44


Information & operations manual for
Helia 44 2018


https://horizonyachtcharters.com/wp-...entually-1.pdf

[Sailorman97]

Looks pretty bad. Given how they finished the repair on the outside I would say it was not repaired at all just water stopped. The crack on the inside says it flexed pretty bad.

The law of gelcoat cracks says if there is a crack in the gelcoat there is a crack in the fiberglass. It is going to need to be ground out till the crack is gone and then replaced. That means 12 to one width to depth.

I would get a quote from a yard on how much it will cost to fix, double it and take that off the offer.

At least there is not a 10,000 lb metal keel hanging off it.

[tkeithlu]

When the keel hit the rock, the keel pivoted, with the leading edge pulling down on the hull fiberglass and the trailing edge pushing up. Expect damage at both ends. With cracks like that, the keel can then flex under usual loads, and eventually fail, which would spoil your entire day.

The task now is to add enough reinforcement, such as transverse strips tagged to longitudinal members, to return the keel/hull join to it's original strength and rigidity.

If someone has stuffed caulk into the cracked fiberglass, all of which needs to be ground out and lapped at that 12:1 bevel, then I would have a very sour feeling about either their competence or their motivation.

[Manateeman]

This boat sells for what...something short of $500,000.?
And it looks like this from the outside?
Forget about this “ repair” . What else is seriously wrong.
Pandoras’ box. The horror show is just about to start.
The manatee crew of professional boatbuilders.