Post by Charlie-Bravo on Apr 13, 2020 18:28:38 GMT
That looks alarming ! The good news is that this is not a fatigue failure which could effect all of the same design, but contamination of the parts being welded and/or the filler material, so not a generic design failier ..... just an unlucky build, with a fabricator welder not paying enough attention .... or being told to hurry up. The clue is the central crack, welds solidify from the edges of the parent material toward the centre of the weld, and concentrate any contamination at the middle, seen it quite a few times ...... alarmingly on nuclear and petrochemical things rather than yachts.
Still worth others checking ....... might have been the same welder !
Great post with good photos, hope you find a good fabricator to re weld it.