i hope this isn't the case but, did that boat get surveyed? That kind of deflection can mean delaminated hull sides or otherwise compromised structure
410 Sundancer/Express Cruiser and 400 Sundancer/Express Cruiser **Official Thread**
- Thread starter mistercomputerman
- Start date
i hope this isn't the case but, did that boat get surveyed? That kind of deflection can mean delaminated hull sides or otherwise compromised structure
oh that’s a really good point, I didn’t visualize it that way in my head but of course if the lift is putting that kind of sideways pressure on the rub rail it could compress it!
RollerCoastr
Well-Known Member
- Nov 15, 2007
- 3,884
- Boat Info
- 1997 400DA
340HP 7.4 Mercruiser Bluewaters
Garmin 741, 742, 8212, 24HD, Intellian I2
- Engines
- 1999 280BR
Twin 250HP Merc 350 Alpha Ones
After I posted that I went looking for pics to illustrate my point. That didn’t work out so well - the lift I have pictures of is BIG, but the straps are touching the rail. The lift at the storage facility I’ve used for the last 7 years however is wider…
Even so, it doesn’t look like it applying much pressure.
Even so, it doesn’t look like it applying much pressure.
best I could find from our survey haulout. Also doesn’t appear to be putting much pressure since the lift points are wider than the boat.
marty51
Member
Find a wider hoist or make a spreader to fit across the top of stainless rails from one side to the other so hull is not pinched. 2x4 I beam 12'-13' long.
Makin I Happen
New Member
- Jul 29, 2020
- 25
- Boat Info
- 2000 Sea Ray 410 3126 Cat's
- Engines
- 3126 Cat's
I think I will make a spreader bar for the spring launch, My clubs lift is not that wide, so its more of a u then a v. Any thoughts about moving the strap forward to the bulk head going into the main cabin? I dont know that the lift is long enough to do it, its just a thought. PS I did have it surveyed before i purchased.
Stee6043
Well-Known Member
Hmmm...even if the lift is exerting pressure on the rails, haven't we all smacked a dock pylon or 12 in our lives, with malice? I'd still be betting on something else going on with that boat. 3" of movement in the rubrail....yikes.
I'm wondering if you've got a wicked rotten deck from leaking stanchions. Any movement when you walk up there? Did your survey show any moisture up on deck?
Here's how my straps are placed when I get lifted by an antique lift, barely big enough for a 400:
Little project today, it’s finally warm enough for the sealant to dry
I’m going to investigate the SR design drawings when I get home to confirm but I was surprised to find the transom is solid glass?
anyway, not a bad job so far.
I’m going to investigate the SR design drawings when I get home to confirm but I was surprised to find the transom is solid glass?
anyway, not a bad job so far.
Dani-Lu
Well-Known Member
Some 410’s had solid hulls and some were cored. I called Sea Ray before buying mine and it is solid. I would have bought it if it was cored, but I preferred solid. I think it depended which factory it was built in, but can’t remember for sure.
There are several discussions had about 8 or 10 years ago; maybe you could find them. Regardless, it was determined that the 400DA's that were built at the MI plant were all glass and the 400DA's build at the Palm Coast plant were wood cored hulls. From what we could determine, all had plywood cored transoms. I can't answer for the 410DA's but suspect all solid hulls with plywood cored transoms....
Dani-Lu
Well-Known Member
Except Strecker says his transom is solid. I do remember sea ray saying everything below the waterline was solid glass. I just assumed that included the transom.
solid, at least where I am drilling, but that is below the waterline. Inside the transom there looks to be some sections that are built up where the platform is mounted so there might be wood in there
Makin I Happen
New Member
- Jul 29, 2020
- 25
- Boat Info
- 2000 Sea Ray 410 3126 Cat's
- Engines
- 3126 Cat's
woah. I would not lift that boat again until you figure out the cause. Can you get to the hull sides from the interior where this is happening? I’d be checking for cracking and wet core in the top deck and around the rub rail
Carver370
Well-Known Member
- Mar 30, 2007
- 1,928
- Boat Info
- 2000 Sea Ray 400 Sundancer - Diesel
- Engines
- T-3116 CAT - 350 HP
To add some confusion to the coring debate.....
My 2000 400 was built in the Merritt Island facility and there is no coring below the waterline.
Even if the slings were slightly off, there shouldn't be any deflection of the hull in that area.
My 2000 400 was built in the Merritt Island facility and there is no coring below the waterline.
Even if the slings were slightly off, there shouldn't be any deflection of the hull in that area.
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Stee6043
Well-Known Member
Man those photos are hard to look at. That looks awful.
Based on that photo your boat is being lifted in nearly the same location as mine in the photo I shared. That lift is not squeezing the boat. In fact your strap angles are applying less pressure to the rub rails than mine.
There has to be something going on with that boat. Prior damage? Is there evidence of glass work done in that area before? That looks like a textbook lift to me.
Have you ever noticed having water in your forward bilge (galley floor)?
Stee6043
Well-Known Member
Makin I Happen
New Member
- Jul 29, 2020
- 25
- Boat Info
- 2000 Sea Ray 410 3126 Cat's
- Engines
- 3126 Cat's
The cover was missing when we bought it, I replaced the following spring. The inside is not accessible to look at.
Stee6043
Well-Known Member
I have to believe your surveyor would have noticed the missing vent and checked that area for moisture. If not, depending on how long that was missing it could certainly be a potential root cause. It seems plausible you've got a bunch of rotten coring in that area. Tap a mallet along the hull sides and see if/when the sound changes, perhaps. Start well aft of that vent and move forward...
Where that deflection is occurring should be right behind your microwave. I've never had mine out but I'm wondering if you could learn anything by removing the microwave and taking a look.
You can, you can get right to the hull side through there, I pulled it so I could remove the built in coffee maker (on the 410, at least)
