Arne Naess Jr. net worth: Arne Naess Jr. is a Norwegian shipping magnate, businessman, and mountaineer who has a net worth $100 million. Arne Naess Jr. was born in Germany in the late 30s. After his parents divorced, he moved to Norway with his mother. He discovered a love of mountaineering, and by his late teens, he had conquered 20 of Norway's major mountains. In the mid-60s, he moved to New York to work for his uncle, who owned a shipping company. In the late 60s, he launched his own shipping and real estate development business in London. His business had its ups and downs over the next few decades, but remained largely successful. He began climbing and leading mountain expeditions again in the early 70s. He was the lead mountaineer on the first Norwegian expedition to Mount Everest. The group's climb was considered one of the most successful ascents of the mountain ever. He married three times, including a second marriage to singer Diana Ross. He passed away in 2004, after falling over 300 feet while climbing a mountain.