Hi Rachel, You hit a great big BINGO. Amsterdam Shipyard G. DeVries Lentsch is the yard that built my Tripp-Lentsch. They also built a small Rhodes design, as I recall; about 25 or 26 feet in length. Is that what you are looking at? DeVries Lentsch, generally built yachts in the 50' and up sizes, - mostly up - and as I mentioned before were one of the top three yards in Europe for high quality yachts, their competitors for the big jobs being, Camper & Nicholson, and Abeking & Rassmussen. DeVries Lentsch with no experience in fiberglass, and wanting to get into a new market area - used Fokker Aircraft, the Dutch aircraft manufacturing company, as fiberglass consultants - to get into the fiberglass boat business, and did it properly, in a temperature and humidity controlled shop. They built a whole new facility in Vianen, Netherlands (their main yard was in Amsterdam), just to do the fiberglass work. They built 50 Tripp-Lentsches (a Bill Tripp design, who also designed the Bermuda 40 for Hinkley, and the Northeast 38 for Le Compte, plus several smaller designs for other Dutch builders) and mine was the last one built: Number 50. At that point G. DeVries Lentsch went into bankruptcy. They had overextended themselves with the building of the whole new Vianen facility; the fiberglass boat business sales didn't materialize as rapidly as expected in their main market, the USA, .............and they lost a contract to a competitor for a large yacht - their bread and butter. Their Banks called their loans, they had liquidity problems, and that was the end of Amsterdam Shipyard, G. DeVries-Lentsch, jr. Bill Tripp had a lot of problems with the smaller Dutch builders not following his designs. They substituted iron keels for the lead that was specified, and pulled other stunts. Bill Tripp finally got fed up and said no Dutch builder was going to get another of his designs. He gave sole rights to produce Bill Tripp designs to the DeDood Shipyard in Bremen, Germany - upstream and across the Weser River from Abeking & Rassmussen. DeDood built only in wood. The smaller Dutch yards were jumping into fiberglass with both feet; learning as they went. I used to visit the Amsterdam Boat Show (and almost every other one in Europe) every year. A side advantage when one has a job that requires a lot of traveling! In '64, '65, '66 when you went into the exhibition hall, it reeked of uncured polyester. You needed a couple of Heinekens to get past the smell........, but then almost everyone was building in fiberglass, except for the few that were still making steel hulled, hard chined vessels. So, from my experience with my Tripp-Lentsch, my guess is that your Phil Rhodes ship hull, built by G. DeVries-Lentsch should be blister free. ............and I don't think - though I don't know for certain - that G. DeVries-Lentsch ever had anyone else build hulls for them. Your boat might have been part of the learning process that G. DeVries-Lentsch went through then building the Tripp-Lentsch 29s, and I know that they had a larger Tripp design ready to build - in the 37 foot size. We picked our boat up at the Vianen yard, and then went via Amsterdam-Rhine Canal to Amsterdam to the G. DeVries-Lentsch yard, where we got the mast stepped. Then we motored around the bottom of the Isselmeer to the East side where we called Harderwijk home port for a month, and learned to play with the new toy. The area where we first sailed is now a new polder - solid land - with new farms, new towns, and a city........... I used to fly over it coming into Amsterdam, and marvel. I used to sail where there are now green fields, roads, towns, ......... Let me know what you find when you inspect it. Connie