Irenes Challenger was an oil tanker that sank in 1977 in the Pacific Ocean.
Irenes Challenger was registered in Liberia, and was owned by the Greek company Tsakos Shipping and Trading when she was lost. On January 17, 1977, Irenes Challenger was en route to Japan from Venezuela with 3,150,000 US gallons (11,900,000 l) of crude oil when she began to break up 204 miles (328 km) southeast of Midway Island. 28 of the tanker's 31 crew were rescued by Pacific Arrow, a Japanese container ship. The United States Coast Guard deployed a C-130 aircraft and the cutter USCGC Mallow to search for the missing crew, but they were never found. While the cargo of oil was lost, it was far enough offshore that it did not threaten land.
- "3 Missing in Breakup of Tanker". The New York Times. January 19, 1977. Retrieved April 5, 2017.
- "Tanker Breaks Up in the Pacific". The New York Times. January 18, 1977. Retrieved April 5, 2017.
- "Regulations to Implement the Results of the International Conference on Tanker Safety and Pollution Prevention". United States Coast Guard. February 1979. Retrieved April 5, 2017.