GEMMA is a 47.4 m Motor Yacht, built in Germany by Abeking & Rasmussen and delivered in 1958.
Her top speed is 24.0 kn and her cruising speed is 20.0 kn and her power comes from two Mercedes diesel engines. She has a 7.2 m beam.
GEMMA is in the top 10% by LOA in the world. She is one of 464 motor yachts in the 45-50m size range, and, compared to similarly sized motor yachts, her cruising speed is 4.38 kn above the average, and her top speed 5.1 kn above the average.