A nice graphic from RSI to show the current scale of ships in the Vanduul line.
Whilst the ship stats on the RSI website still says the Idris is 140m long (which made it a little bit bigger than a Starfarer tanker), the graphic clearly labels the Idris now as 240m which is a bit better size for a corvette imo. That means it's about a quarter of the length of the Bengal Carrier.
Loving the look of some of these other ships though, the Boarding Ship and the Destroyer in particular look nice.
(https://robertsspaceindustries.com/media/8wm5ul3q2mipkr/source/Vanduul_vehicle_size_chart3_mod.jpg)