In the Southern Hemisphere, the longest reported were a 25 m (82 ft) male and a 27.3 m (89.6 ft) female, while the longest measured by Mackintosh and Wheeler (1929) were a 22.65 m (74.3 ft) male and a 24.53 m (80.5 ft) female. Major F. A. Spencer, while whaling inspector of the factory ship "Southern Princess" (1936–38), confirmed the length of a female caught in the Antarctic, south of the Indian Ocean; scientist David Edward Gaskin also measured a 25.9 m female as whaling inspector of the British factory ship "Southern Venturer" in the Southern Ocean in the 1961–62 season. Terence Wise, who worked as a winch operator aboard the British factory ship "Balaena", claimed that "the biggest fin ever saw" was a specimen caught near Bouvet Island in January 1958. The largest fin whale ever weighed (piecemeal) was a pregnant female caught by Japanese whalers in the Antarctic in 1948 which weighed , not including 6% for loss of fluids during the flensing process. An individual at the maximum confirmed size of 25.9 m is estimated to weigh around 95 tonnes (104.5 tons), varying from about 76 tonnes (84 tons) to 114 tonnes (125.5 tons) depending on fat condition which varies by about 50% during the year.