Grumman TBF Avenger
…Atlantic, with about 30 kills, including the cargo submarine I-52. Greatly modified after World War II, the Avenger remained in use until the 1960s. The Douglas TBD Devastator, the U.S. Navy's main torpedo bomber introduced in 1935, was obsolete by 1939. Bids were accepted from several companies, but Grumman's TBF design was…