The Sea Endurance has a double bottom and central steel keel. It was built in 1992 in Denmark and refurbished in 2005 which included the addition of a new panorama lounge on the top deck and 26 cabins providing views of the sea. It was originally used for sailing along the coast of Greenland.
The vessel can accommodate 53 passengers in 26 bright, outside cabins appointed with single or double beds and private, en-suite toilet and shower facilities.
The ship is 50m long, 11m wide and has a depth of 7.10m. The main engine, B & W Alpha DVO diesel 1,470 kW, has a maximum speed of 13.4 knots and a service speed of 12.5 knots. The ship carries a fleet of five Zodiac rafts for whale watching and shore landings in isolated areas.