Shippo Posted November 15, 2007 Report Share Posted November 15, 2007 Hi All, I've been sailing a mk1 maricat for the past 12 months and love it.The boat sails really well but have noticed one of the hulls taking on water approx. 2- 3 litres.Can't see any obvious points of entry.So hoping someone can give me a clue as the most likely spot to look. Cheers Shippo Link to comment Share on other sites More sharing options...
knobblyoldjimbo Posted November 15, 2007 Report Share Posted November 15, 2007 an observation from another class, my Careel 18 does this because the deck/hull join is suspect. it's not dangerous but the talc resin mix they use (more talc less resin is cheaper) breaks down. On Careels it's really hard to see where its coming from, some have totally removed the deck and redone it, the current trend is to release the rubbing strip and sikaflex into the gap. The maricat seems to be of similar construction so it might be the same. Remember that the hydraulic pressure when the leeward hull is hard down is quite significant. Link to comment Share on other sites More sharing options...
stb-tack Posted November 15, 2007 Report Share Posted November 15, 2007 Try bungs & bung fittings, rudder gudgeon fittings, rivets that hold the tramp aluminium in place and inspection ports. These are all the common places, but there are others that are not so easy to fix. Get an air pump, make it fit the bung outlet, pump a little air into the hull, paint some detergent and water around the above areas and look for bubbles. If these are the culprits remove fittings, clean and reseal with sikaflex, buy a new set of bungs every year, the washers on them deteriorate fairly fast and leak. NB a small amount of air pressure, go easy. Hope this helps Al Link to comment Share on other sites More sharing options...
Pointed Reply Posted November 15, 2007 Report Share Posted November 15, 2007 Another way is to put the water/detergent mix into a spray bottle and mist it on. A vaccum cleaner on "blow" is good, but as stb-tack says take it easy. Link to comment Share on other sites More sharing options...
BarryK1200LT Posted November 15, 2007 Report Share Posted November 15, 2007 Hey Shippo welcome to the forum. Mine leaks about the same over a few hours. I know my problem is the rivot holes under the alloy tramp holding strips. I know I have a few spare holes under there that aren't sealed. Another little project for a rainy day in the shed. Cheers Barry Link to comment Share on other sites More sharing options...
Shippo Posted November 15, 2007 Author Report Share Posted November 15, 2007 Thanks Fella's , That's certainly given me some good spots to check. I'm lookihg forward to catching up with some of you pro's at Port Kembla. Cheers Shippo Link to comment Share on other sites More sharing options...
darcy1945 Posted November 16, 2007 Report Share Posted November 16, 2007 The easiest way to find your leak is to simply blow (5-10 deep breaths will be plenty), in the bung holes while somebody listens for the leak, if no leak other than breather hole, then the bung is the problem. Metal bung fittings suffer from corrosion and will leak even with new bungs and o rings, replace the whole fitting if suspect. Link to comment Share on other sites More sharing options...
warbird Posted November 16, 2007 Report Share Posted November 16, 2007 I just put the hose in the bung and put in about 5/10 litres. Check the keels..... empty. invert the platform...do the same. All will be revealed. Soap etc etc.is problematic. The weight of the water creats a desire to leak and the leak lasts long enough to make clear decisions. IF you seal the boat well doon't forget the drill small holes in the inspefction ports so the heat does not do damage. Link to comment Share on other sites More sharing options...
port tack Posted November 16, 2007 Report Share Posted November 16, 2007 another simple method grab a length of garden hose approx 1 metre paint boat with soapy water (dishwashing liquid) insert hose in bung hole and blow air through hose use your'e lung power this way no damage to the hull floatation where the bubbles appear you have found the problem rudder assemblies, hatches & under the beams are a good starting point Link to comment Share on other sites More sharing options...
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