Riachuelo class have standard submerge time but longer Patrol time. I think we have to put aip to that extra space instead so ours can get submerge longer.
I don't believe airspace review anymore. They said US didn't want to give us AESA radar when in fact they offer us F16V.
And from their articles pretty obvious they have some Russian bias.
https://www.airspace-review.com/2020/11/04/as-tak-kabulkan-f-35-malah-tawarkan-f-16-lawas/
https://m.cnnindonesia.com/nasional/20201212191302-12-581378/densus-tangkap-salah-satu-gembong-bom-bali-i-buron-18-tahun
Not MIT but He was active in Poso