In the UK the design is associated with ferro cement construction, a number of Endurance 35’s were built using this method by Windboats in Norfolk during the 1970’s as were a number of amateur built examples. The endurance has also been built in GRP (fibre glass) including foam cored construction, wood, steel and even aluminium.
Our endurance Angelina was GRP by a French Yard Stratimar who built the design on the Canal de Midi in the south of France. Sadly the Stratimar yard is long closed, but in Spain the Endurance design was built by the Belure yard for many years and in Canada Spencer Yachts also built the 35.
Although the basic design is instantly recognisable, there are many differences, both ketch and schooner rig was popular, although I had some correspondence with Peter Ibold the designer who admitted his favorite was the cutter rig as fitted to Angelina.
If you need proof of the capability of the Endurance, look no further than Unicornio a Stratimar built Endurance 35 which operated as a charter boat in Patagonia, South Georgia and the Antarctic.