Lagoon bulkheads

[danno7]

Originally Posted by Richardw

I have a lagoon 410 2002. I have not seen any problems with the hull. I just had all new thruhull fittings installed last winter plus new bottom paint. What exactly are you talking about when you refer to bulkheads? I went over every inch of the bottom and it was all solid.

Rich

The bulkheads are supports in each hull that both gives the hull strength and is used to connect the hull to the midspan support. The main bulkhead is the same distance back from the bow as the mast. Then there are one or more secondary bulkheads.

Generally there is a doorway, cabinet, or closet built around the primary bulkhead. It is usually covered by interior finishing. You can not see it.

[Uncle Bob]

Kind of amusing, someone that professes to have an engineering background yet is unaware of what a bulkhead is? Let alone the function and purpose of one.

[AKA-None]

Originally Posted by Richardw

Is a doorway on the interior considered a bulkhead? That's funny

What’s funny is it’s called a doorway which is usually cut into a bulkhead

[rabbi]

And I find it funny that this thread pops up again and again even though all things relevant are being discussed in (closed) FB groups. FB groups where only owners of the affected boat model have access and no internet experts.

IMO the internet has too many Lagoon bulkhead experts

[danno7]

Originally Posted by rabbi

And I find it funny that this thread pops up again and again even though all things relevant are being discussed in (closed) FB groups. FB groups where only owners of the affected boat model have access and no internet experts.

IMO the internet has too many Lagoon bulkhead experts

I had to laugh. Agree

[Redreuben]

Expert;
Where Ex is the unknown factor and
Xpert is a drip under pressure.

[Uncle Bob]

Originally Posted by rabbi

And I find it funny that this thread pops up again and again even though all things relevant are being discussed in (closed) FB groups. FB groups where only owners of the affected boat model have access and no internet experts.

IMO the internet has too many Lagoon bulkhead experts

Yep, your right, keep it to the owners in a closed FB group. Don't want any other rabble putting their 2c worth in now do we.
Especially those that may be or have been prospective owners themselves.

[arsenelupiga]

big day today

Our Lagoon 400 has passed 10 year mark !!!

All I can say, exceptional quality of build and excellent performance. In 10 years we had following failures:

- steering cables rot, replaced with dyneema
- act on lagoon recall for nacelle
- Act on escape hatch recall

No bulkhead issues and no cracking. Yeah and 3 kn VMG in 10 kn true fully loaded

40 K miles.

Boat survived severe grounding unscratched, that was luck involved and some very helpful people VMR people an dcruisers. Thanks a lot !

Time to celebrate and wish for happy future .

[Simi 60]

Originally Posted by arsenelupiga

.

Boat survived severe grounding unscratched, that was luck involved and some very helpful people VMR people an dcruisers. Thanks a lot !

.

A severe grounding into marshmallow does not a severe grounding make.

[lestersails]

Originally Posted by Simi 60

A severe grounding into marshmallow does not a severe grounding make.

And a grounding that humbles the captain but does not damage the boat is the best possible learning experience.

[arsenelupiga]

Originally Posted by lestersails

And a grounding that humbles the captain but does not damage the boat is the best possible learning experience.

i got very rough experience building lesson.

learned that
-first dragging of unfailable rocna can be catastrophic. that was first drag in 4 years or so, no warning .
- rivers surpass forecasted high tide level for variety of reasons
- rocna sucks in mud if anchor needs reset, say in trade winds and storm cell from west, you better be on boat and engine running.
- very helpful VMR & cruisers community, didnt even mind getting blood on their hands - oysters.

Yeah, phew, what an experience, i am much more careful now.

[Uncle Bob]

Originally Posted by arsenelupiga

i got very rough experience building lesson.

learned that
-first dragging of unfailable rocna can be catastrophic. that was first drag in 4 years or so, no warning .
- rivers surpass forecasted high tide level for variety of reasons
- rocna sucks in mud if anchor needs reset, say in trade winds and storm cell from west, you better be on boat and engine running.
- very helpful VMR & cruisers community, didnt even mind getting blood on their hands - oysters.

Yeah, phew, what an experience, i am much more careful now.

Your not the first to discover that Rocna are not all that they are cracked up to be.

[Chotu]

Originally Posted by arsenelupiga

i got very rough experience building lesson.

learned that
-first dragging of unfailable rocna can be catastrophic. that was first drag in 4 years or so, no warning .
- rivers surpass forecasted high tide level for variety of reasons
- rocna sucks in mud if anchor needs reset, say in trade winds and storm cell from west, you better be on boat and engine running.
- very helpful VMR & cruisers community, didnt even mind getting blood on their hands - oysters.

Yeah, phew, what an experience, i am much more careful now.

What boat and what size Rocna, please?

Also, what scope?

I’m on one right now and not as confident as my old Manson supreme

[SailFastTri]

Originally Posted by Uncle Bob

Your not the first to discover that Rocna are not all that they are cracked up to be.

Yup. The original one with the hoop. But the Rocca Vulcan is a different animal, excellent experience with it after about 90 nights of anchoring a high-windage-profile cat, often in strong reversing currents. If it sets, so far it has reliably self-reset.

[rslifkin]

Originally Posted by Chotu

What boat and what size Rocna, please?

Also, what scope?

I’m on one right now and not as confident as my old Manson supreme

Any rollbar anchor can clog the rollbar with junk and correspondingly fail to reset if the seabed conditions are just right. IIRC, SV Panope reproduced it in testing a couple of times with the Rocna, and I think also the Manson Supreme. The Mantus M1 seems less vulnerable due to the larger rollbar opening.

In general, larger size anchors should be less vulnerable to this, as the opening will be larger.