Something i saw there makes me think that the keel roller brackets were installed backwards on my trailer, thus making the accident that i had much more likely. Then i might buy and bend some aluminum plate fit in the keel seal the back side of the plate with some 5200 between the plate and the hull. After making the 70 mile trip a crack developed the length of the keel where it meets the hull. Took a sander to feather bottom paint some more then i started seeing a crack and, got out a grinder and started chasing. The keller ferry will undergo permanent repairs this weekend to a hairline crack in the hull below the water line.
The cracks run along a sharp 90deg bend as the hull meets the plank itself. By the time it was transported to the chaumont yacht club, the crack had widened to 16 inches. I had it on the water over the weekend and had to bilge it a few times, so when i got home, i filled it up with water and found a crack in the passenger side of the hull, more towards the front of the boat. In this case, change tacks and observe what happens. Working with a fiberglass, or even a wooden hull, you will need to start by cleaning out the crack and affected area. The crack can form due to a number of causes but probably the most common reason is the hull isnt as stiff as when it was new. Spanish translation of hull collins englishspanish. There will always be some movement when a heavy iron keel is bolted to a slightly flexible hull structure, and eventually the original sealant will break down and allow water to enter the hulltokeel joint and cause rust. The flex was bad and i could see the repair made by the po was failing. Besides stiffening the bottom of the hull, floors provide critical support to the root of a sailboats keel where it meets the hull. Of course, soft and hard chine are simply the extremes an enormous number of multichine hull designs fall on the spectrum somewhere between the two. Hole in the hull we discovered a crack sailing sv catsaway.
Riveted aluminum hull keel repair neededcracked up. For various reasons i didnt get to use it much last year, so its been on the trailer by the side of my house for 1215 months. The hull and most of the keel were molded in one piece, but a section running from the aft end of the external ballast diagonally upwards to the upper rudder gudgeon. Spanish translation of hull the official collins englishspanish dictionary online. Riveted aluminum hull keel repair needed cracked up front. This annually reoccurring crack is sometimes referred to as a catalina smile because it often occurs on catalina sailboats. Fixing cracks in a hullkeel sailboat owners forums. I filled and faired it with west system epoxy with a fairing additive. The name rocker comes from the fact that the more rocker a hull has, the more likely it is to rock from front bow to back stern. Only you know how hard you hit the rock and where on keel the impact was.
Big crack on keelhull joint fix it anarchy sailing. If you see cracks in the bilge or inside of hull you should check the tabbing of the pan to the hull and bulkheads to the hull. Ended up being about 18 inches on one side, horizontally front to back and about 6 on the other. Aluminum boat crack repair this old boat lake ontario. In the mean time, you should drill a small hole at both ends of the crack to prevent it from spreading any farther. I am wondering if this condition requires immediate repair, and if so, what type of repairs are needed. People on this board have talked about the keels being breakaway and mention of a foam portion of the keel that allows. Before the trip there was no noticable damage below the waterline. A friend looked at this condition and called it the catalina smile, explaining the crack occurs on older boats where the hull meets the bolted on keel. Jul 05, 2017 fixing the keel of speck, our beneteau first 42 that is getting fixed up and repaired for a 2018 around the work voyage. Crack between keel and hull olson 30 class association. Aug 02, 2017 keels that bolt in place provide some design advantages, but they are also more troublesome. I had it on the water over the weekend and had to bilge it a few times, so when i got home, i filled it up with water and found a crack in the passenger side of the hull, more towards the front of the boa.
Itoga battelle columbus laboratories under department of the navy naval sea systems command contract no. The keel flexes a bit and this works the filler lose and a crack forms. Hull crack arrester systems a study of ship hull crack arrester systems by m. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. If you have had hull and keel completely separated, chamfering the bottom of the holes in the hull will yield a more durable seal from the sealant. I disagree with bill that this is a crack on the keel caused by the forward keel bolt being too loose. I have a 1979 morgan 382 the was recently brought to my house for repairs. The lead keel is attached to the fiberglass pod that extends from the hull. Jul 05, 2017 when the boat was picked up from cape cod, a 6 inch crack was discovered in the hull. The cracking is a normal thing that comes from the differing flexibility of the glass hull and lead or iron keel. The keel rollers are mounted on twopiece galvanized brackets. Rocker is the curvature of the hull from bow to stern. For some sailors, there is a common maintenance ritual that occurs every springrepairing cracks where the leading edge of the ballast keel meets the hull.
May 24, 2006 i have a 1979 morgan 382 the was recently brought to my house for repairs. Riveted aluminum hull keel repair neededcracked up front. Assume you do not mean a crack where the metal keel meets the grp. Floors are transverse sills in the bottom of a hull on which cabin soles are traditionally installed. Hello i have a 17 foot aluminum boat and i recently noticed a crack that is seeping water. I know exactly what you are going through, my theory on why it happens on all the boats is that the keel is larger than the sump the bottom of the boat. Keller ferry out of service for weekend repairs the. With both surfaces prepared and the hull ready to be lowered onto the keel, put a thick bead of polyurethane sealant 3m 5200 around each of the bolts where they exit the keel. The sailor was tied to a line looped beneath the vessel, thrown overboard on one side of the ship, and dragged under the ships keel, either from one side of the ship to the other, or the length of the ship from bow to stern. The large crack is on the port side of the hull, the opposite side to the emergency repairs that were needed. Seek professional adviceconfirmation before acting on such at all times. Do not apply glass cloth and resin over the joint as this will crack and break off as the joint moves, leaving no seal at all. If a sailboat only leaks when its heeling over, a keel bolt or keel sump crack leaking under load or a fitting on the leeward hull side siphoning into the bilge might be implicated. I am told that the keels will crack where it meets the hull.
That crack that tom has described is up where the keel joins the fiberglass hull. The hull may open at the top such as a dinghy, or it may be fully or partially covered with a deck. The line where the hull meets the water surface is called the waterline. These indicate a downwards tug on the hull as the bottom of the keel hit something. Noo02475c4325 mit, consultants to battelle this documenthas hen appovedfor. There is no evidence of a crack on the inside of the hull. Thats amazing to have a crack in the hull and only missing a bit of bottom paint. Is this a matter of tightening the keel bolts and patching or could it be something more nefarious. When a full keel runs aground, it sits on the bottom awaiting the captain to kedge off. If the bottom of the boat is painted, this joint should be invisible. I have a question conserning a catalina 30 i am thinking of looking at here soon.
The keel on this boat is unusual i guess, as it consists of a flattened planklike formation which protrudes about 12inch lower than the rest of the hull improves planing and turning. The hull skin itself is the first defense and is usually a very thick layup at. If you just have the annoying seam where the keel meets the hull and you know it doesnt move much, use the thickened gflex as a fairing compound to be honest, if i were going to fair the crack with something else, id use a compound especially for that, either west epoxy. I have been told that this is normal and very common and is due to the flexing of the hull and keel for the first time and that it simply just requires it being reepoxied, as well as checking the tightness of the keel bolts. The keel is cracked and also the same stringer on both sides of the boat have cracks. These indicate a downwards tug on the hull as the bottom of the keel hit. The hull skin itself is the first defense and is usually a very thick layup at the leading edge and keel bottom. There is a big smilelike crack on the leading edge of the keel at the keelhull joint. Along with severe loss of strength, dry rot causes the wood to discolor, crack across the grain and. So we are almost walking on the hull of the boat going trough the hallway. But as i examined the construction and the pictures of the other who removed everything inside his 4788 i realized the keel is in fact the bilge area of the boat. The garboard is the plank which meets the keel or deadwood. I have taken it to the dealer once already with no luck, actually got the boat back in worse shape than when i took it there. At first the fiberglass guy said it was a wooden keel and that it was full of moisture.
Hull repair is fairly easy for someone who owns a small fiberglass boat of their own. I am the new third owner of a 2007 jeanneau 36i performance version with deep keel. Lets start with the joint between the keel and the hull or keel stub. The best method, to ensure we dont spread our crack, is to drill a hole at either end do bear in mine that what we can see on the outside of the hull may be the thin end of the wedge and the crack may extend further inside the boat. Sep 20, 2018 as the vertical hull lines angle steeply inward toward the keel, the craft will behave accordingly. When a fin keel runs aground, the forces can lead to cracks in the keel and hull from the amplification of these forces. If youre taking water you also have a crack under the boat to deal with. Inspecting my keel and noticed the hairline cracks at keelhull joint. The crack can form due to a number of causes but probably. A wooden, stone, or metal device that, when connected to a vessel with a cable or chain, was used to secure the vessel to the bed of a waterway to prevent it from drifting. Any content, information, or advice found on social media platforms and the wider internet, including forums such as ybw, should not be acted upon unless checked against a reliable, authoritative source, and rechecked, particularly where personal health and liberty is at stake. I am hoping they are just in the gelcoat which would be easy to fix.
This type of repair is necessary if you run aground, run into a rock, or have some of crack caused by age and use. Cracks radiating out beyond the forward leading edge of the keel like the hands of a clock. Given that boats with deep keels do occasionally run aground, the builder will usually cap the ballast with a secondary glass layer across the top of the keel. When the boat was picked up from cape cod, a 6 inch crack was discovered in the hull. I did have the wife hold a bright flashlight on a dark night under the hull while i peeked around inside. Moisture can get under the epoxy you can see the water move a little when you press on the area. When set up, the keel bolts can all fail and the keel will stay on. The most basic sort of structural reinforcements are called floors and stringers. I could see water weeping into the bilge at the port side of that junction. Cracks running across the hull at the real end of keel indicating the rear of the keel tried to push upwards into the hull. I was thinking i would remove some fiberglass at that junction at the aft end of the keel where it meets the hull, looking for a crack. The keel bottom was cracked and chipped and had the remains of a coral reef stuck to it. Resting on our keel is pushing up our floorboards, so we decided to have a look. In one spot, the epoxy is cracked and there is a short 3 inch section where it appears that there is is a crack in the wood.
The crack exhibited in your photo is more or less normal for a 30yearold boat with a bolton keel. I hauled her out after purchase and discovered that the caulking is cracked where the keel meets the hull on the leading forward edge. Edgebonding the hull planking with epoxy after cleaning the seams is the. Monel is the best metal to use for keel bolts due to its strength and. If it were me i might consider drilling both ends of the crack to stop it. First on the list was to repair the bottom of the keel and smooth the underwater surfaces of the hull. The middle of a vessel, either longitudinally or transversely. The attached photo shows the seam between that pod and the keel that is leaking. I agree that finding a good aluminum welder will be your best bet. I doubt that your smile requires any action, but before you repaint the bottom, you would not be wrong to reef out the crack a bit with a wire brush and give it three or four coats of an epoxy primer interlux epoxy primecote or something similar. This annually reoccurring crack is sometimes referred to as a catalina. Im concerned about this crack being more than it looks like. Above the line is very heavy fiberglass it supports a 7000 lb lead keel bolted to the hull with 10 oneinch stainless steel bolts, the heads of which were buried deep in the keel when it.
There can be damage far away from the point of impact from a hard grounding. The rubber goo, looks like 4200,can be sanded off, but it needs disc sanding with a coarse 24 grit. Leak in hull at aft end of keel morgan 38 sailboat forum. In the area where the keel meets the hull, skin thickness is increased, core. The work will put the ferry out of service starting at 7 p. Typically a good repair removes considerably more gelcoat around the area, tapers back the crack, at a significant slope, on both sides, replaces fabric that has been ground away on both sides and finally bulks up the area flush with surrounding surfaces, in prep for more gelcoat or paint. Apr 23, 2007 when set up, the keel bolts can all fail and the keel will stay on.
Both cracks were clearly where the hull lay up ended and the builders secondary work started. Crack in keel catalina 36375 international association. I am thinking i need to sand it and fare it out and fibreglass it. If the keel is allowed to crash land in the extended position, broken cable as an example it can hyper extend and do damage to the fiberglass as it goes beyond the limits of design travel. And further, the smile is not a crack in the lead, but rather in the bondo filler that fairs the lead keel into the fiberglass hull. Apr 26, 2009 assume you do not mean a crack where the metal keel meets the grp. Keel to hull joint repair on an iod using an epoxycabosil mixture followed by layering of 1708 dbm fiberglass and 10 oz fiberglass cloth. Unfortunately, it was also resting on two wood blocks, and the whole boat weighs over 10,000 lb. I hauled lively yesterday and found a disturbing crack between the hull and the keel see pics. This flexing and bulging was happening right at where the deck meets the keel housing in the curved area. Cracked caulking on keel on 2007 jeanneau 36i performance. I have some small horizontal cracks in the gelcoat where the keel meets the hull. The thousands of fatigue cycles induced while sailing can leave the hull too.
You sense the stresses in the hull each time the keel meets the ground. On sailnet don casey wrote an article about keel hull joints where he described signs of serious problems. A line here is normal because of the various fillers and sealants used. Jebus some dork used house construction screws to put on the rubrail, which would have been fine if used as temps and pulled out a week later. The first several years of rhode islandbuilt tritons have an addedon section at the aft end of the keel. A friend looked at this condition and called it the catalina smile, explaining the crack occurs on older boats where the hull meets the bolted on. Illustrated glossary of ship and boat terms oxford handbooks. Aug 02, 2017 a friend looked at this condition and called it the catalina smile, explaining the crack occurs on older boats where the hull meets the bolted on keel. I have a 15 cold molded marsh cat joel white catboat that i bought two years ago. Fixing the keel of speck, our beneteau first 42 that is getting fixed up and repaired for a 2018 around the work voyage. For what its worth the boat has an inboard and lives in her slip but was on a trailer for a couple of years. May 09, 2014 took a sander to feather bottom paint some more then i started seeing a crack and, got out a grinder and started chasing. In the west marine catalog, the mounting slots for the roller brackets shown as facing towards the center of the keel rollers.