Famous and very beautiful Tripp design that put Hinckley on the map as a builder and launched them into the fiberglass era. Three versions over a very long "semi-custom" production run with increasingly taller sailplans over the years. Preceded by the equally famous Block Island 40, and certainly influenced by the very successful S&S yawl "Finisterre." Good articles here and here.
Same vintage Tripp design built by the now-famous yard in Southwest Harbor, Maine.
"A 57-foot yawl designed by Bill Tripp..." "Ondine II was the first all-aluminum ocean racer ever built..." "She was an immediate success and was campaigned in prestigious ocean races all over the world." "and went on to win races against much larger opponents..." In the first couple of seasons, ...Ondine <sailed> 30,000 miles as she went from the Bermuda Race to the SORC to the Sydney-Hobart Race in Australia and back."
More information here and here <sources quoted above>. Photo below.
Same beam, draft within a few inches and only a foot difference in waterline length, and very similar standard interior arrangements. Hull number one of the 43 production run had a deck from the 50's deck mold, and they even used the same cockpit. Great info here.