DBYS Newsletter Issue 2

Here is issue 2 of my newsletter I sent out in June. If wanting to sign up for the news letter you can do so on my website: dbyachtsurvey.com

Dylan Bailey's Yacht Surveying And Consulting

In This Issue IR Chainplate Inspections Boating Safety  Metal Boat Festival And More Website Refresh Check out our new look at:  http://dbyachtsurvey.com About Dylan:  http://www.dbyachtsurvey.com/experience/

Chainplate Inspections In the last newsletter I reported on my use of thermal imaging for the inspection of embedded/glassed in chainplates. I have conducted more inspections over the past two months with good results. To read more about these inspections, go to my blog: http://dbmarinesurveyor.blogspot.com/2014/05/more-glassed-inembedded-chainplates.html Boating Safety One of the busiest boating weekends has passed  and the summer boating season has started throughout the country.  All boaters should not only pay close attention to the condition of their boat's systems when commissioning their boat in the spring, but all summer long.  This does not only include maintaing your  engine/engines, but all of your hoses, thru-hull valves, electrical connections, lifelines, rigging, and ensuring all of your safety gear is up to date. Here is a link for the USCG requirements:  http://www.uscgboating.org/assets/1/workflow_staging/Publications/420.PDF   Capsize! This was the title of one of the best articles I have read in Professional Boat Builder Magazine. The article was written by yacht designer Dudley Dix.  I have built and sailed on Dudley's boats and own one.  Not only is he a very talented designer, he is also a  amateur builder, and experienced racer.  If you are in the industry you can get a subscription to Pro Boat here: http://www.proboat.com/table-of-contents-149 To read Dudley's account of the capsize on his blog go here: http://dudleydix.blogspot.com/2014_01_01_archive.html Metal Boat Festival 2014   The metal boat festival: The board members have been busy planning this year's Metal Boat Festival. We have a good line up of speakers for this year. My talk this year will be on paint systems for metal boats. More info on the speakers and topics can be found here: http://metalboatsurveyor.blogspot.com/2014/05/metal-boat-festival-2014-program.html http://www.metalboatsociety.com/festivalInfo.htm If interested in metal boats, this is the place to be. I can not think of a better place to be in August than Annacortes, Washington, the home of the Metal Boat Festival. A scenic ferry ride will take you to the San Juan Islands.  If you are coming to the Festival plan on a trip to the San Juan Islands, you will not be disappointed. Spring Metal Boat Quarterly Interview   My first interview for a series I am doing for the  Metal Boat Quarterly was with writers/cruising sailors, Beth Leonard and Evans Starzinger. I will be posting my interviews on my Metal Boat Blog after they are released in the Metal Boat Quarterly.  http://metalboatsurveyor.blogspot.com/2014/05/interview-with-beth-leonard-and-evans.html Applying Infrared Thermography To Marine Surveying   Recently I attended a two day seminar on Applying Infrared Thermography To Marine Surveying hosted by ARIS INC. It was a very rewarding two days of hands on field work and class room instruction.

More Glassed In/Embedded Chainplates

In April I surveyed a Sea Tiger Ketch. The main mast chainplates were glassed in.
I used Thermal Imaging to inspect the chainplates, along with visual inspection. Signs of corrosion were sighted weeping from around the bolt on one of the chainplates. Thermal Imagining helped determine the extent of the corrosion and moisture. The photos below are from that inspection. The last photo was sent by the owner after removing some of the fiberglass. Note the corrosion.

Areas Of Moisture 

Areas Of Moisture And Corrosion

Visual Inspection Indicated Corrosion

One Of The Chainplates After Removal Of Some Of The Fiberglass

DBYS News Letter

In March I put out the first newsletter for DBYS. This will be a bimonthly newsletter of findings and information related to the marine industry. Here is the first issue of the newsletter.

Dylan Bailey's Yacht Surveying

Issue 1

Detecting trapped moisture around embedded chainplates

In October I was asked by Beth Leonard of Boat US if Thermal Imaging could help determine the condition of embedded chainplates. I had not tried, but I am always up for a challenge! It did work to detect trapped moisture. Should you remove you're chainplates if trapped moisture is found? My answer is yes! Although it does not always mean you will find corrosion, but I would hope you would sleep better at night, I know I would. For more information on using thermal imaging on chainplate inspections read my blog. I will posting information on the inspections later this week. http://dbmarinesurveyor.blogspot.com/ Boat US did an alert in their Sea Worthy Magazine about embedded chainplates, to read click below. https://www.boatus.com/seaworthy/magazine/2014/january/alert.asp

Upcoming Presentations

On March 12th Jack Allinson and I will be giving a talk to the East Coast Sailing Association in Melbourne, FL, about the benefits of using thermal imaging on boats. http://www.ecsasail.com/

March 20th I will be speaking to the North Florida Cruising Club

I am honored to speak to this group that is based in the area of the St. Johns River that I learned to sail on. For information on the presentation see the links below. http://nfccsail.com/wordpress/march-20-club-meeting-new-technologies-in-marine-surveying/ http://www.meetup.com/Sailing-North-Florida-Cruising-Club/events/166698272/

Once again on March 22, Jack Allinson and I will be at it again. We will be giving the talk that we did at IBEX last year.

http://www.ibexshow.com/

Inspection Of Embedded/Glassed In Chainplates

 


How do you go about determining what the condition of your embedded chainplates are in? There is not a magic window we can peer into. Two options are to X Ray the chainplates and Thermal Imaging. Since I have not seen the X Ray images in person I can not give much comment. From what I have seen posted online, I am skeptical if it can pick up on the hair line cracks that can form in the stainless. With Thermal Imaging we can not see the chain plate per-say, but see the trapped moisture. If salt water is trapped against the stainless then crevice corrosion can begin.

In the January edition of Boat US Seaworthy magazine there was an alert written to inform the boat owner of this type of inspection and the concern of embedded chainplates.

Below are images from an inspection of an Irwin.
I was able to follow the removal of the chainplates and inspect them after the were removed. Four out of the six suffered from crevice corrosion.  

                                                Trapped Moisture

                               




Cracks:




and then cut in half:



You can see the small amount of good metal left in the chainplate.


I have also done an inspection on an Irwin that had trapped moisture and the owner reported that the chainplates, when removed did not have any corrosion. Most likely this boat had only fresh water trapped around the chainplates.

Image from the exterior indicating trapped moisture.





Link To the Boat US Alert:

https://www.boatus.com/seaworthy/magazine/2014/january/alert.asp