Repairing hull damage on a Hanse.

[DeepFrz]

This video shows damage and repair efforts underway to repair damage after a keel strike. It show quite graphically what happens to a grid structure that is bonded instead of glassed into the hull. The bonding material that some builders are using is very brittle and just shatters.

https://www.youtube.com/watch?v=C3RzxLW7t1U

[tkeithlu]

Wow. I had no idea that the manufacturers were doing something that counter to good construction. I can think of ways to attach the bulkheads without glassing them in, but simply gluing them to the hul is not one of them.

Keel strikes are a frequent topic on the forum. The video confirms my understanding of the mechanics of hull damage from a strike, but also gives a good idea of where to look for hidden damage. An owner could think that there was none because the outside of the hull was intact.

[hpeer]

Any idea what he hit and how hard?

[Emmalina]

Mmm epoxy doesn,t bond to polyester ...

[hpeer]

He clearly is just parroting what the yard is telling him. And translating to english in the meantime.

[NevilleCat]

Originally Posted by Emmalina

Mmm epoxy doesn,t bond to polyester ...

? or are you being sarcastic?

[Westcliffe01]

See image of cast iron keel from grounding. Boat was in a charter program when it occurred....

Originally Posted by hpeer

Any idea what he hit and how hard?

[boatpoker]

Watching this video is just confirmation that online info simply can't be trusted. He has no idea what he is talking about.

[jimbunyard]

I like the part where he says (paraphrased), "You can tell it's strong because when we fix it here, the breaks move further up the hull"...

[NevilleCat]

Well, yes he was talking about similar repairs in other boats that have had further groundings and where the repairs have proved stronger than the unrepaired hull, so justifying the way the repairs are made. Kind of makes sense to me.

[jimbunyard]

I'd think it obvious that a 'repair' that transfers damage to a different part of the 'repaired' structure was an excellent example of the oxymoronic usage of the word 'repair', but I guess I'd be wrong.

The 'professional repair' shown in the video is slightly better than the one shown in the recent Benttoe utube boat-repair/love-affair discussion, but it still falls very short of the permanent, holistic reconstruction that would be required to make the vessel long-term, open-ocean seaworthy.

Provided the boat isn't grounded again, and is kept out of long blue-water passages, she'll probably be good, as 'repaired', for at least 5 years; most vessels see little hard usage anyway...right?

[Pete7]

Originally Posted by boatpoker

Watching this video is just confirmation that online info simply can't be trusted. He has no idea what he is talking about.

I got the impression the boat is on finance and to help pay for it he charters it. So one big crunch later and the charter company say no thanks leaving him with a damaged boat and a rather big loan outstanding. Not sure why the insurance didn't pick up the bill. Better still buy a 30ft yacht for cash and live within ones means. Oh and the second hand 30ft yacht from the 1980 or 1990s, well that will have nicely glassed in stringers etc.

[nepal]

Originally Posted by Emmalina

Mmm epoxy doesn,t bond to polyester ...

Is it not the other way around?.

[boatpoker]

Originally Posted by nepal

Is it not the other way around?.

Disregard that entire video. It is full of ignorance.

[hpeer]

Well there is a lot of good stuff in the video. The video itself shows a lot of construction details and he does show extents of damage. But also he is putting himself out there, opening himself to ridicule (ah hem) while attempting to help others.

Sure it is not a perfect video or explanation but it has significant merit.

Change subject. He talks about hand built boats being twice as expensive. I wonder where his repair bills will come in and if he now thinks buying a “production” boat was a justifiable cost saving.