The whole story

For the rest of us in the Roamer forum....

LROS: Lloyd's Register of Shipping

ABS: American Bureau of Shipping

IACS: International Association of Classification Societies? (I had to google this one)

I think that they radius the new plate and therefore the weld, without corners so there is less stress to the new plate, cause we all know welds pull.

I dont understand the "5 times the plate thickness for the corners of welded inserts" though.

Kiwi

Sorry, K1W1 and I get carried away sometimes.

Five times the plate thickness means that the corner radius for a 6mm thick plate should be 30mm. Class standards are generally written for large ships so the reference to a 100mm minimum radius would be for plates 20mm or less. That is a bit much for the 5 or 6mm plate used on smaller vessels so if the boat is not classed, a 20 or 30mm radius for thin plates is perfectly adequate, in my opinion anyway.

In case you are interested, the IACS document I referenced is "Shipbuilding and Repair Quality Standard No.47" and it is just a Google away.

Hi,

Google doesn't have all the answers.

LROS: Loose Rules, Obsolete Standards

ABS: All Below Standard

IACS: Intentionally Antiquated Construction Standards.

If you are ever involved in a situation where you have a Classification Society Surveyor working on a project you might be surprised that what can be accepted is often really down to the individual surveyors interpretation of the rules. They are also not unknown to change their interpretation of the same rule at a later stage.

On new constructions the Surveyors generally work for the building yard, the yards are their customers not the ship owners. The yards press the Surveyors to inspect things and accept them before they are finished which they often give in and do. You then have to really stand up to them and demand that they list all the defects and deficiencies on their acceptance protocol plus demand a re inspection (something they do not like to do as it costs their customers money for a re inspection)when it's actually finished or you will find your self in a very deep tank where some SOB has removed the ladder.

As far as Classification Society inspections of vessels in service ..... well that's a whole other ball game but needless to say there are some real junkers out there with current Class certificates - Haven't you recently been involved with one Marmot?

You don't know how much I wish I could write about that. It was the non-sinking steel version of the sunken Bert without being able to blame manufacturing defects, followed by unbending insistence on following class rules that have little applicability to the purpose. But the surveyor was as much a victim of the situation as the vessel, he was just trying to protect himself.

If yacht stories were on afternoon television that one would have been a mini-series.

In any event, the sight of sharp corners and saw kerfs makes me cringe. There are reasons most of the class rules came too exist and most of them are just good fabrication practice.

You are not alone in that wish

I have no doubt the attending surveyor was a bit uneasy when the actual extent of the problems were revealed. The ones who were each partially to blame were the preceding 20 yrs worth who did not do their inspections as the should have done.

Here are a some photos to show what I have to deal with on one project I am involved with.

The third photo down is actually a correct procedure as the horizontal cut line follows the route of a weld through an existing shell plate joint.

LROS will normally accept the others if the longitudinal weld seam exceeds the insert length by 100mm and a new development as of today after more complaints they want to see each corner X Rayed when no radius is employed.

MODS: If this is too much a hijack of the original thread please feel free to move or delete this post.

Well, as long as we have hijacked this one, let me add to the collection of hull repair examples. Here are a couple of pictures of a lloyds approved insert that pretty much covers all the possible configurations. It overlaps a stringer, has no edge on an existing weld and penetrates a tank. I didn't measure the radius but it appears to be around 100mm even though the plate thickness is 6mm. Both sides of the insert are shown. The gentleman in the picture is flaw checking the welds acoustically. The lower picture is the internal side of the patch viewed from inside the fuel tank.

Very nice pictures from the "Great Swede" You are an inspiration.
Will you eventually go with real teak on that aft deck? Just finishing with
the plywood on my deck and I am leaning towards the "ridged" version of
Plas-Teak. I have to order soon so I am open to your thoughts.

wow that was quite the job! I'm jealous of you guys that have the patience and attention span to finisht these things through! I would have gotten frustrated or distra---

---oh look, something shiney!

Good job man!

Hi Erik,

I tried signing in to Wisconsin DNR website and attempted to re-register the boat in WI to see if it would give me the previous owner's name... no luck. Did you check with Skipper Bud's to see if they knew who the previous owner was? I'm guessing it was a vessel that they owned as if it was a brokerage boat the PO's information would be on your sales docs.

Do you know if the boat previously had a name/hailing port? If so, I can ask some of the folks around our YC if the recognize that.

You also may be able to contact the Wisconsin DNR and see if an open records request is possible. Open Records Requests - WDNR

Be well,

max

Was it documented? Try this... By number (USCG Doc# or name)

Office of Science and Technology

Merry Christmas Erik... this is what you asked for... thank Santa!




Yes the information I have on this boat registration number: WS3949DP is a 37 foot Chris Craft Roamer Riviera last registered to Kelly Henrickson, W239N7762 Majestic Pl, Sussex, WI 53089 and it looks like the registration expired on March 31, 2007.

Thank you and have a nice day,

JEM


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