What i say is not about BN must be losing when facing against IN, but what i must made it clear is BN lacking in ASW area, oh no, precisely is currently you don't have any means to challenge IN in undersea warfare let alone going to challenge them vis a vis Submarine vs Submarine. I have see your Navy profile, they are quite good Navy for developing countries with small GDP like Bangladesh. Come on, accept your weakness and give critics to your government to addressing and solving their particular weaknesses. Your Navy need taking a lot of time to building their respective forces, buying submarine is one thing, preparing their infrastructure is another thing, and honing your skill and accumulating experiences in undersea warfare is a whole another thing. Your sailor your Navy your fleets is particularly lacks in everything regarding Submarine or undersea warfare and how to tackle those threats. Tell me, if India suddenly going to war against Bangladesh right now, and their Navy challenge your Navy in this moment can you imagine what kind of fate awaiting your Sailor and your Naval fleets?
For one thing, Naval warfare is quite different with Land warfare, in Naval warfare technological advantage, the number of fleet you have, industrial base output, and in this time you must too taking into account about Air Superiority and Air defense umbrella protection from AAW Destroyer/frigate and fighter squadron, all of those component is mostly will decide the results of any Naval battle. Let alone in C4ISR capability, your armed forces, especially your Navy is severely lacked in any conventional area when compared against India Navy.
on the red bold,
Just let me guess, you are thinking if India Navy facing against your Naval forces, they must protected all of their shore and keeping eye for all of their sea lane? And they will dividing their forces to watching several fronts they intended to keep and check? And you thinking if your Navy operating several Submarine they will give an headache for India Navy and hurt them most when your sub attacking their Sea Lane? Come on, it must be your wishful thinking to think your Navy can challenge them and hurt them the most. Until you have a capable and experience forces like the Pakistani has right now, your Navy and Air force actually cannot deter any Indian Fleets right now.