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  Outrage Hull Inflexions/Depressions???

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Author Topic:   Outrage Hull Inflexions/Depressions???
Bear posted 03-24-2001 07:57 AM ET (US)   Profile for Bear   Send Email to Bear  
I've been looking at 20-22 Outrages from 78 to 89 and of the 3 I've looked at, everyone had some sort of inflexion or what looks like several "depressions" along the waterline. On 2 boats they've been symmetric on both sides, maybe aligning to some structural members. You can only see them when looking at an angle with a gloss to the hull from waxing. Is this commonplace in larger whalers, particular to one model..etc?? Could understand one boat, but on all three it has me wondering. Thanks for any info that could shed some light on the subject.
B Bear posted 03-24-2001 08:05 AM ET (US)     Profile for B Bear  Send Email to B Bear     
Just a guess, could the symmetric "depressions" be caused by a trailer? Where on the hull are these located?
Bear (Bob)
Bear posted 03-24-2001 09:36 AM ET (US)     Profile for Bear  Send Email to Bear     
On each boat at about the same place...starting right at the waterline (they were bottom painted) and extending up about 5", 5 in diameter as well. Fwd/aft all located from about the console aft. Asked a whaler dealer and he said he had seen it often but didn't know what it was.
bigz posted 03-24-2001 09:39 AM ET (US)     Profile for bigz    
Not uncommon in all fiberglass hulls to one degree or another and is deemed inherent to the construction process. There are acceptable levels of "oil" canning established by individual manufactures. In the case of BW, they hold to a low tolerance level of what is acceptable and what is not after the hulls are made.

One has to remember in fiberglass construction the glass fibers are the strength portion, but when saturated in resin the result is almost a material to flexible for boat building. In the case of a BW boat where the "skins" are filled with foam the core can be crushed or distorted by external forces as well as the "skins" can be distorted by internal force -- as when the foam expands if the hull is still "hot" when the foam is added. This condition may not visually appear in a new hull immediately, over time though from pounding and flexing , improper support of the boat motor hanging off the transom, and of course an impact will cause these areas to distort to a noticeable condition --- ironically in most cases of BW boats we don't find separation of the core or voids forming as you do in other craft made with a similar process.

Generally BW doesn't warranty this condition unless it directly relates to a structural (core separation) or delamination problem. If the percussion test show the hull to be sound with no inter voids then this condition is considered cosmetic.

Tom W Clark posted 03-24-2001 09:57 AM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
The condition you describe sounds like the foam shinkage issue that I have seen in the early outrages. In some cases the distortions can be extreme. What happens is the foam inside the hull shinks and pulls the outer skin in with it.
dfmcintyre posted 03-24-2001 10:00 AM ET (US)     Profile for dfmcintyre  Send Email to dfmcintyre     
I've seen them on 20 - 25' series hulls. Had them on my 22' and my 25, and can still see them on my friends 25. Slight depressions that are mostly visible looking right down the waterline.

Not a serious (imo) defect and would not stop me from a purchase.


bigz posted 03-24-2001 10:40 AM ET (US)     Profile for bigz    
Don your right about being minor and any of the boats mentioned due to there age is probably stabilized. In addition it was seen extensively in the deep V OR's starting back with the original in '78 and continuing through the 80's. I also agree it wouldn't be a deterrent in purchasing if all else was sound.

Tom C, I have never heard of a foam shrinking issue with BWs (in fact if the foam shrank due to it's inherent properties it would pull away from the skin causing a void -- not the case here) --- I have discussed this issue with 3 professional marine surveyors and a close acquaintance at BW.

The foam doesn't shrink but can very well expand to cause a problem in a weak spot or "hot" spot. The other areas which can cause this I mentioned above.


Bear posted 03-24-2001 02:34 PM ET (US)     Profile for Bear  Send Email to Bear     
God I love this website!! Thanks everyone, appreciate the passdown. I plan on buying the boat and there's some work to be done (half the fun of owning a boat afterall), especially with gelcoat on the inside, so don't think you've seen/heard the last of me. Once again, thanks...

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