Naval blockade and Cargo ships

I have seen this one in another thread but i thought it needs its own thread

Link to that thread

- Since in all major wars there were naval blockades, so i think call of war should also have something like that

1. If someone conducts a trade with a country and if they are not connected by land, the resources which are traded should be transported through sea by cargo ships.

2.If a country (A) declares trade embargo on another country (B),The country (A) can blockade (if it has a capable navy) any trade that comes through the sea, it will not just bombard them but stop them from moving any further or return them to their home ports.

3. And of course the country (B) can break the naval blockade if it manages to produce a capable navy and attacks country (A)'s navy and destroys it.