KITTIWAKE on the first day of our journey together, August 2019. Photo: Jamie White © 2020
little vessel that can cross oceans or be thrown upon concrete docks during a hurricane without complaint. Many of you are aware from Last year, I had the good fortune to meet Hal DeVaney, the long-time Hal DeVaney’s account in Flicka Friends Vol. 16, No. 3 of owner of KITTIWAKE, a Flicka 20 berthed in Galveston where I KITTIWAKE’s dance with Hurricane Ike in September 2008. currently live. Hal and I enjoyed lunch overlooking the marina where KITTIWAKE is berthed. At one point he said, almost in passing, that Here are photos of KITTIWAKE thrown up upon the concrete dock he was thinking of selling his boat. at the Galveston Yacht Basin. She is nestled between several large boats with only one bent stanchion in her pushpit and some minor After several heartbeats to contain my excitement, I mentioned I might scratches…unbelievable, but a testament to her construction. be interested in buying her. We finished lunch and headed down to the From here on, I will refer to KITTIWAKE as DULCINEA, as we reboat for a tour. christened her on December 21, 2019 upon her return from the While her topsides and mast were oxidized and gouged and her rigging restoration of her hull. needed complete renewal, the inside was beautiful teak with a new solid laminate headliner panel. Hal listed the sail inventory that In anticipation of my first haul-out last November 2019 with included a genoa and storm jib and trysail in good condition. He also DULCINEA, I looked through photos of her last haul-out in 2005 mentioned that the 10 horsepower Honda outboard worked well but that Hal shared with me. I noticed she had a couple of blisters and spoke to Hal about any osmosis issues he thought she might have. I was currently dry of fuel (a good thing with carburetors). was very thankful for the photos and information Hal shared. Hal told me that his main concern was that his Flicka went to the right person – and I am grateful that he thought I was that right person. So, On November 19, 2019 my wife, Ruth Downes, and I cast off dock lines on August 15, 2019 my wife Ruth Downes and I became the new and motored DULCINEA the six miles to PayCo Marina & Boatyard on Galveston Island. We were delighted to feel her come alive and were stewards of s/y KITTIWAKE and soon to become s/y DULCINEA. pleased when we were given a brief dolphin escort down the ship The following narrative with photos documents my restoration of channel. KITTIWAKE’s hull and rigging from November 2019 to May 2020. Like most sailors who slip their “new” boat for the first time, optimism Before I begin, I must attest to the stoutness of our Flickas. Bruce fills the air with the expectation of a quick “shave and a haircut” yard Bingham’s design and Pacific Seacraft’s craftsmanship created a stout period. 4
The first haul-out of DULCINEA, ex KITTIWAKE, turned out to be a shave and a haircut unfortunately followed by total hip and knee replacement. Being a good steward of any vessel requires you to forgo expediency and strive to always give your boat the full measure of your time and coin. I am glad to say we did that with DULCINEA during this haul-out. The photos illustrate a yard period of a multitude of small and large tasks which included hull blister repairs – many involving grinding down to the fiberglass roving mat, dishing out an area to lay up new fiberglass, followed by epoxy filler, barrier coat and bottom paint. Once the blister work was completed, the hull was prepped by fixing any chips, dings, or deeper gouges with epoxy filler and/or fiberglass cloth followed by epoxy primer and three topcoats of Interlux Brightside® polyurethane paint. Interspersed with all this, the painted aluminum main mast was stripped of its oxidized paint, sanded, etched, primed, and painted along with servicing all seacocks and thru-hull fittings.
SWIFT of IPSWICH sailing to Catalina Island off Los Angeles. Photo: Courtesy of Los Angeles Maritime Institute © 2020
Next I renewed the bottom sternpost bronze gudgeon as the old one had corroded away. Once the gudgeon was drilled and thru-bolted the final task was applying the new name to the topsides and returning her to her home berth. After returning DULCINEA to her slip, she had a renaming ceremony followed by renewal of the original stainless steel chainplates and complete renewal of all standing and running rigging. Closing out this narrative on the restoration of DULCINEA will be a few photos of her first sea-trials. As DULCINEA was being lifted onto the hard at the boatyard, I was buoyed by seeing just a smattering of blisters. Later, in the light of the afternoon sun, I saw many more blisters albeit mostly small ones. My boat had acne and not a bottle of Clearasil in sight. Not a catastrophic problem but a problem, nevertheless. Maybe about two dozen small and a couple of 3-4” diameter blisters each side.
Group photo of the key SWIFT of IPSWICH restoration staff. Bill Luther is second from right and I am on far left.. Photo: Courtesy of Los Angeles Maritime Institute © 2020
It was not unexpected; she had been sitting in warm salt water since her last haul-out. The prospect of a short yard period consisting of a “shave and a haircut” went out the window as I inspected the boat pox marring her lovely hull. Thus began an almost month-long haulout. In addition to the original plan of repairing the chips and gouges on her topsides and 5 F
renewing the coatings on her mast, I needed to come up with a repair plan for the osmosis damage. A bad case of blisters can penetrate the skin coat, which is the first fiberglass layer underneath the gelcoat, and go deeper into the structural laminate. This was to be the fate of many fiberglass boats built after the Arab oil embargo of the mid 1970’s. There is much conjecture and it seems everyone has their own idea as to how the plague of boat pox began. In any case, the Coast Guard decided to fund a study in 1985 and it eventually was undertaken by two chemical engineers at the University of Rhode Island: Thomas J. Rockett, Ph.D., and Vincent Rose, Ph.D. Here is a link to their research and report prepared for the U.S. Coast Guard: The Causes of Hull Blisters by Thomas Rockett, Ph.D. and Vincent Rose, Ph.D. According to Drs. Rockett and Rose, blisters are small to large bumps on a hull, generally below the waterline, but can appear above the waterline in some instances. The blisters range in size from the size of a pea to several inches in diameter and normally occur between the cosmetic layer of exterior gelcoat and the first outer layer of fiberglass composite (usually called the skin coat). Although they can dig much deeper in some instances into the structural, heavy rug-like weave of woven roving. The skin coat of chopped fiberglass mat next to the gel coat is often composed of short fibers, not interlocked or woven fibers (limited structural strength, but of great benefit cosmetically). Chopped mat prevents “print out” from the heavier very defined woven roving mat, which could otherwise cause the gelcoat to have small wavy ridges; not the glass appearance we expect in gelcoat. A series of excellent articles by David Pascoe, a reputable and respected marine surveyor, on the causes and solutions to osmosis blisters may be read or downloaded at: Failed Blister Repairs, A Case History and Solutions. We are fortunate that Pacific Seacraft has over-engineered our Flickas with soundly hand-laid thick hulls, so a handful or more of blisters should not a concern, unless they go deep into the woven roving mat. Thankfully, only a couple of blisters just kissed the woven roving on DULCINEA. The repair approach and use of the correct materials is vital to the strength of the repair
Hal alongside KITTIWAKE on our initial meeting. Photo: Jamie White © 2020
and ultimately your boat’s integrity. There are two categories of repair – cosmetic and structural. Small blisters may begin as cosmetic repairs, but over ten to twenty years can become structural if they are allowed to go deep into the woven roving laminates. With DULCINEA’s acne I was faced with basically cosmetic but nonsuperficial repairs, and a handful of deeper repairs approaching structural depths if not addressed at this haul-out. How do blisters occur? Through osmosis. Polyester resin used in the 1970s and 1980s and gel coat are fairly water-impermeable.
Water does pass through, though, and if there are small voids in the laminates due to resin starvation, it can get into them. The water has a chemical reaction with any uncured resin used in making the hull. It creates an acidic liquid that then needs more water to reduce acidity. The classic definition of osmosis is “a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.” Flicka Friends F
KITTIWAKE between a powerboat and large sailboat. No hull damage. Photo: Hal Devaney © 2020
Lifting KITTIWAKE back into the water after Hurricane Ike. Photo: Hal Devaney © 2020
This fluid pressure causes the acidic fluid to expand, thus creating a blister. This gives birth to a vicious cycle that can take years before it is first observed as a blister. The best time to check for blisters is shortly after hauling the boat out of the water, with early morning or late afternoon sunlight to highlight any raised areas. Soon after removing the boat, the blisters will deflate, and you will not be able to see the extent of the problem. Another way is to lightly sand the bottom with 60 grit paper which will reveal any pimples by knocking off their tops, forming concentric rings which are very visible. So, what to do when you discover your lovely objet d'art Flicka suspended in the Travel Lift slings has the pox? The first thing is to determine the severity of the blistering problem and how expensive a repair you are willing to undertake.
Mast struck and ready to depart to boatyard. Jamie White © 2020
On yachts worth over $50,000 it may make sense to let the hull dry out for several months or even longer after removing the gelcoat and skin coat of fiberglass with a planer – an awfully expensive option. On less expensive boats that you never intend to sell, it makes sense to address the blistering problem in the manner I chose – by grinding down the blister to good fiberglass, laying up and wetting out the dished out area with fresh fiberglass cloth or bi-axial mat, and then fairing it before applying bottom paint. So if your boat has blisters, and you are not sure what to do about it, keep an eye on the situation. If the blisters start to join up, or get too big, then do a cost benefit analysis to see if more extensive and expensive measures are required. With DULCINEA being built in 1984, I decided she was not too badly afflicted with the pox after 36 years. I decided to spend a couple of weeks grinding out blisters and laying up new fiberglass and not go into the ultra-expensive moisture meter testing, removing of gelcoat and skin coat, and long hull drying out protocols with infra-red lamps and the like.
Hmmm... does not look too bad. Photo: Ruth Downes © 2020
My plan for the blister repairs and other work: • Survey and note/map location of blisters. • Break open each blister. • Grind away the broken dome of the blister. • Scrub until clean with a stiff brush or Scotch-Brite® pad. • Coat the inside of each cavity with epoxy resin. 8
Port side view of s/y DULCINEA on the hard. Photo: Jamie White © 2020
• Cut woven fiberglass mat and tear chopped strand fiberglass mat. • Wet out fiberglass cloth until it is invisible. • Use peel ply for a smooth surface and to carry away any amine blush or surface contamination. • Apply epoxy filler and fair it. • Repair topsides dings, gouges, and pinholes. • Apply bottom paint. • Paint topsides. • Strip mast of oxidized paint and hardware and repaint. • Replace corroded lower rudder gudgeon. Starboard side view of s/y DULCINEA on the hard. Photo: Jamie White © 2020
• Launch and return to home berth. Break Open Each Blister: First and foremost – gather and wear appropriate safety gear (PPE). A good half face or full-face respirator is a must when grinding bottom paint and fiberglass along with safety glasses of some description. Be sure to wear proper eye protection. A Tyvek suit will eliminate some of the itching that results from fiberglass repair. Grind Away the Broken Dome of the Blister: I was always amazed how much pressure was built up within some of the blisters. Not having safety glasses could allow the brownish acidic liquid with a pungent, vinegary odor inside the blister to hit your eye after lancing it…not a good thing. I found that a 7” grinder with 36 grit worked great for opening up the blister and doing the initial dishing out. How much to dish out? I would grind back at a shallow slope (about 12:1 ratio of laminate thickness to area to be dished out) until I reached dry, clean fiberglass and removed all the rotten, decomposed material. Keep cleaning out the area until you reach the good gel coat layer. If the laminate looks wet or damp, you will need to keep grinding until you reach the healthy fiberglass material. You will know if the laminate is good if you do not see any white or decomposed fibers. Once the bad material is removed you will have what looks like a saucer shape in the hull.
Topsides washed down and bottom pressure washed. I was surprised just how much bottom paint was intact after over 10 years since last haul-out. Photo: Jamie White © 2020
Sometimes a blister the size of my pinky tip would end up forming a dish 10” across before reaching sound fiberglass. I was lucky with DULCINEA, as none of the blisters went too far into the woven roving. When I thought I had dished out enough, I would take a plastic handled screwdriver and sound the perimeter for delamination. 9 F
It is obvious when tapping, as sound laminations have a sharp note to them and any delamination produces a dull thud. A dull or flat sound anywhere indicates additional delamination, meaning that the blister is larger than you thought. Increase the circumference (not the depth) of the depression until the laminate all around it is sound. Scrub Until Clean with Stiff Brush or Scotch-Brite® Pad: Once the blister is open, tap around the edges to make sure you have completely opened the damaged area. Wash the area to get rid of contaminants. You could use rubbing alcohol (isopropyl) and clean paper towels. Use a Dremel rotary tool (small blisters) or grinder with a soft pad and 60-grit paper to grind away the rotten, decomposed material. You will want to get it all out of there. Keep cleaning out the area until you reach the good gel coat layer or clean fiberglass cloth or mat. If the laminate looks damaged, you will need to remove enough laminate until you reach healthy fiberglass material. You will know if the laminate is good if you do not see any white fibers. It will be dark and transparent. Once the bad material is ground out you will have what looks like a dimple in the hull. Cut Woven Mat and Tear Chopped Strand or Bi-Axial Mat to Shape: The first step to laminating the repair patch is pre-cutting your patch materials to fit the repair. Cut each ply or layer so that it fits precisely into the area of the taper or into the step that was prepared for it.
A Tyvek suit and proper safety gear is a must. Photo: Ruth Downes © 2020
After cutting out the patch, I prefer to lightly rub the edges between my thumb and forefinger to feather the cut edges a wee bit. Using a high-quality pair of scissors is a tremendous help in cutting the fiberglass cloth and saves much frustration! I found that scissors with micro-serrated blades grip the material for non-slip cut, much better than household style scissors. Coat the Inside of Each Cavity with Epoxy Resin: Once you have measured and mixed your resin, start by pre—wetting the entire bonding area of the repair with resin. This will allow you to build a film of resin across the entire bonding area, maximizing the physical bond. I recommend applying the resin about one inch outside the area of the repair to guarantee a better bond. At the edge of the repair, it is easy for the lip to suffer from resin starvation as gravity will pull the resin down the sloping sides of the dished out area. Continued on Page 13 10
Beginning to grind down a blister until sound fiberglass is found. Photo: Ruth Downes © 2020
Slowly grinding down until sound dry fiberglass mat or roving is reached. Only several blisters went deep enough to touch the structural roving. Photo: Jamie White © 2020
Blister #13 grinding done – a bit more grinding needed to #14. Photo: Jamie White © 2020
Blister #14 grinding almost completed. Note the different layers and that the blister did not extend into the structural roving. Photo: Jamie White © 2020
Starboard side ground down – next step finish port side and start laying up fiberglass cloth. Photo: Jamie White © 2020
Wet Out Fiberglass Cloth Until it is Invisible: It is vital that the fiberglass material is THOROUGHLY saturated with resin. I like to work on a sheet of stiff plastic and have used old Plexiglas with good results. Using a stiff plastic plate helps to ensure the saturated fabric can be easily lifted from the plate once it is ready. A flexible rubber squeegee or fiberglass roller are the best tools for spreading resin evenly through fabric and removing any excess resin and air bubbles which may be present before lifting it to the repair area. Place each layer of reinforcement into its spot on the repair, ensuring proper orientation if the area is not symmetrical… remember to roll over the area as noted to remove air bubbles (especially important). It may look bad, however over 90% of the blisters were only in the cosmetic gelcoat and skin coat. Photo: Jamie White © 2020
Heat One thing to remember is there is a lot of heat generated when using catalyzed resin so it’s a best practice to do two or three ply maximum, and not build up the layers so thick that a lot of heat will be generated. Note the gray ring of barrier coat, then the green gelcoat and the 4 ply layers of alternating bi-axial mat and fiberglass cloth. The needle-like ends of the cured fiberglass are easily sanded down, or use Peel-Ply as mentioned in the next section. Use Peel Ply for a Smooth Surface and to Remove Amine Blush or Surface Contamination: I had ordered Peel-Ply cloth, but it did not arrive until halfway through the wetting out and laying up of the fiberglass. It would have saved a lot of time to have it on hand. Without it and its ability to leave a smooth and amine blush clean surface, I had to do a lot of sanding smooth followed by a thorough fresh water washdown to remove the amine blush caused by the epoxy curing process. The translucent squares are pieces of the Peel-Ply placed over the final lay up of cloth and smoothed down with a plastic spreader. Very slick – I wish I’d had it from the beginning!
The needle-like ends of the cured fiberglass are easily sanded down. Photo: Jamie White © 2020
Apply Epoxy Filler Fairing Compound and Fair It Out: Two-part Marine grade epoxy filler applied over repaired areas. I saw several folks at the yard using automotive filler that works great on a Mustang or Corvette, but eventually absorbs water on a Flicka 20. 13 F
Repair Topsides Dings, Gouges, and Pinholes: Over the years, like most boats, DULCINEA collected various large and small dings, chips and gouges to her topsides and deck or deckhouse. While the dings on her decks and deckhouse were few and insignificant, those on her topsides were more numerous and, in some instances, quite deep. I decided to concentrate on the topsides and leave the deck and deckhouse for the next haul-out. There were dings and crazing possibly from rubbing alongside mooring poles in her berth. Unfinished repair at both scuppers needed to be redone.