Round the world voyage of the Explorer 39 Carol.
Translated statement from the article about the journey of the Caroll, an Explorer 39.
“The boat was very well designed and built, the hull is cold molded sandwich up to the waterline and CoreCell sandwich for the remaining hull, deck [and even the furniture!]. The Caroll is not a light boat: of the 10 tons of displacement, about 3,700 kg are made up of ballast and the retractable keel, great for navigating in shallow waters”, replied an excited Raimundo, to complete: “our average speed has been 6 knots and I was impressed with the behavior of the boat in rough conditions, running-off in 40 knots winds, a maneuver that I performed for the first time in my life.“
https://maracatublog.wordpress.com/2012/01/07/a-viagem-meteorica-do-caroll/