Originally designed as a maritime surveillance aircraft to supplement the Bear D, the Bear F evolved to become the premier anti-submarine warfare (ASW) aircraft of the Soviet Navy during the Cold War. The ASW variants were designated as Tu-142M2 (Bear F Mod 2), Tu-142M3 (Bear F Mod 3), and Tu-142M4 (Bear F Mod 4).
The Tu-142MR (Bear J) was a variant of the Bear F modified for use in submarine communications as well as other command, control and communications (C3) duties.
With eight-bladed contra-rotating propellers the engine that emerged was the Kuznetsov NK-12 with a nominal 12,000 eshp (8948kW) power rating. Although the engine was advanced, the fuselage design was conventional: it is a low-wing cantilever monoplane with 35 degrees of sweep. The angle ensured that the main wing spar passed though the fuselage in front of the bomb bay. It had a retractable tricycle landing gear, with the main gear retracting rearwards.The first aircraft flew in 1953.