Cracked beam an issue?

[hockeypat27]

I am working on a 1989 Sea Nymph GLS195.
When I got the floors cleaned up, I found this crack as well as the aluminum piece just above it, to be separated from the rivets.
Im thinking about riveting the upper piece back on, but not repairing the lower crack.

Has anyone seen this before? Any recommendations?

 

[Scott Danforth]

Have the cracks welded

 

[hockeypat27]

Have the cracks welded

Ok thx. I was thinking that if I had it welded, the hull flexing would just crack the weld. Also thought about getting aluminum c channels and having it welded on over top of that beam.

 

[froggy1150]

Looks like at least 3 of 4 of those are cracked. I would weld all indications then brace.

 

[Scott Danforth]

Ok thx. I was thinking that if I had it welded, the hull flexing would just crack the weld. Also thought about getting aluminum c channels and having it welded on over top of that beam.

Not welding and the hull will crack and you will have a leak or worse, sink

 

[racerone]

Big waves really flex these hulls.-----Some aluminum alloys have poor resistance to fatigue.----Also difficult to bend.----Hence the fancy dimples at the bend.------Find a shop experience in aluminum boat repair.----Your location

 

[hockeypat27]

Like when I avoid checking my bank account.. I just took a closer look at the remainder of the braces. Yea, 8 have at least a hairline crack.

I’ll get it in somewhere for repair.

 

[racerone]

An experienced aluminum boat repair shop might say----" here is the fix , we do this type of repair all the time. "-----Look around in your area.-----Send them pictures of the issue.----Find out what they say , recommend.

 

[airshot]

By all means repair those cracks !! Depending on how you use the boat will depend on how involved your repair needs to be. If it were mine, at the minimum I would make bracing to cover and re-enforce those areas. Welding and bracing would be prefered. Someone has been running in some rough seas at speed to cause those cracks.

 

[Scott Danforth]

Like when I avoid checking my bank account.. I just took a closer look at the remainder of the braces. Yea, 8 have at least a hairline crack.

I’ll get it in somewhere for repair.

Check your local radiator shop. Most do aluminum welding cheap

 

[jimmbo]

Bracing/reinforcement of the Cracked Areas is needed. Some of those Rivets should also be checked as they would have seen a lot of Stress before those beams failed

 

[hockeypat27]

Bracing/reinforcement of the Cracked Areas is needed. Some of those Rivets should also be checked as they would have seen a lot of Stress before those beams failed

Yes I agree. It’s actually the reason the boat is ripped apart right now. I know of at least 6 rivets in the area that are compromised. Thanks for the input. Reinforces (non pun intended) some things I was considering.

 

[hockeypat27]

All welded

 

[flashback]

Looks good, the truss plates should work well..

 

[hockeypat27]

Looks good, the truss plates should work well..

Thx, found a local specialist. He welded the cracks then reinforced it with plates.

Also welded the trailer frame and welded shut the live well ports in the transom that I wanted gone.