Yak-9U

The Yak-9U is a Tier-9 aircraft found in the Soviet Tech-Tree. The Yak-9U was equipped with a M-107 engine and an improved, more aerodynamic shape.

The in-game model of the Yak-9U and also the Black Sea variant is not an actual Yak-9U. A Yak-9U has no oil cooler under the nose, instead it has coolers in the wing roots. It also has a different canopy. Compare this to the in game model with nose cowl, which more closely resembles the tier 7 Yak-9T.