Haven't heard or seen Akula in 1/700.
but have seen in 1/250 - CN Model (China Production, it can be build as motorized or static).
But if anyone interested in Alfa 1/700, u can search the web (or maybe ebay), for ARII product - it can with hull full and water line plus clear plastic base for water diorama.
Fiat - Jakarta (Indonesia)
sshhh.... rig ship for ultra silent..........