World's biggest passenger submarine tested in S China

[beijingwalker]

World's biggest passenger submarine tested in S China

 

[Chanakyaa]

Good Idea.

 

[Oracle]

its deep sea research vessel , not passenger submarine
a submerged body will need more fuel and will have less speed .

 

[war&peace]

I want to see more of them. A trip to undersea, is much cheaper and much more informative than a space trip.

 

[Imtiaz_Sarwar]

Is it economically feasible.