Post by ComfortZone on Feb 26, 2024 10:06:51 GMT 12
Most have seen the Parlay Youtube with the Lagoon 450 structural issues, here is another example when cost cutting takes precedent over good boat building practice
Most Euro production boats are typically built like this, using some sort of bog to secure bulkheads, or alternatively the hull liners have moulded slots for the bulkheads to locate in and some sort of polyureathane/silicon goo is used to finish them off. These hull liners/grids are also well known for breaking their bonding following a grounding.
This guy tells his story about repairing his Hanse's grid
Good practice is that all main bulkheads should have tabs of at least 100mm on bulkhead and hull side, both sides including deck connection, using multiple layers of appropriate cloth (biaxial or similar)
This Youtube is an example of how it should be done, with one qualification
the qualification is that a strip of foam should be placed on the edges of the bulheads to prevent hull hardspots that will otherwise occur due to the slight joint shrinkage as the resin cures.
A rough guide is that production boat quality changed significantly for the worse post the 2008 GFC when manufacturers were backs to the wall and looking to cut costs every way possible. All the "bolt on" stuff (keel, mast and deck gear, engines, internal fittings) are pretty much fixed costs so the only areas to make significant cost savings are hull materials and labour costs.
The local surveyors and cat 1 inspectors will confirm this, eg the Bene 423 and 473's are regarded as perfectly adequate for an island's run, their successors somewhat less so. Fogg has previously mentioned similar on older vs newer when he was shopping Jenneaus.
Most Euro production boats are typically built like this, using some sort of bog to secure bulkheads, or alternatively the hull liners have moulded slots for the bulkheads to locate in and some sort of polyureathane/silicon goo is used to finish them off. These hull liners/grids are also well known for breaking their bonding following a grounding.
This guy tells his story about repairing his Hanse's grid
Good practice is that all main bulkheads should have tabs of at least 100mm on bulkhead and hull side, both sides including deck connection, using multiple layers of appropriate cloth (biaxial or similar)
This Youtube is an example of how it should be done, with one qualification
the qualification is that a strip of foam should be placed on the edges of the bulheads to prevent hull hardspots that will otherwise occur due to the slight joint shrinkage as the resin cures.
A rough guide is that production boat quality changed significantly for the worse post the 2008 GFC when manufacturers were backs to the wall and looking to cut costs every way possible. All the "bolt on" stuff (keel, mast and deck gear, engines, internal fittings) are pretty much fixed costs so the only areas to make significant cost savings are hull materials and labour costs.
The local surveyors and cat 1 inspectors will confirm this, eg the Bene 423 and 473's are regarded as perfectly adequate for an island's run, their successors somewhat less so. Fogg has previously mentioned similar on older vs newer when he was shopping Jenneaus.
