Madame Thelma is a 39.6 m Motor Yacht, built by CRN and delivered in 1976.
Her top speed is 15.0 kn and she boasts a maximum range of 3500.0 nm when navigating at cruising speed, with power coming from two Detroit Diesel diesel engines. She can accommodate up to 12 guests in 6 staterooms, with 10 crew members. She has a gross tonnage of 279.0 GT and a 7.5 m beam, and she is built with a Teak deck, a Steel hull, and Aluminium superstructure.
She was designed by CRN, who also completed the naval architecture and designed the interior. CRN has designed 19 yachts, created the naval architecture for 138 yachts, and designed the interior of 4 yachts for yachts above 24 metres.
Madame Thelma is in the top 30% by LOA in the world. She is one of 1268 motor yachts in the 35-40m size range, and, compared to similarly sized motor yachts, her volume is 9.03 GT above the average.