::I looked at File:Indian_rockets.jpg and it's written there "MSLV" instead of "GSLV"? Is it typo or entirely different class of rockets? In any case, the payload capacity for GSLV III, published online, is 10 ton LEO and 4.4 ton GTO. GSLV IV (w/ 2 additional strap-ons I think) will have approximately 50% more capacity so ditto 15t/6t LEO/GTO capacity. I don't know however, if the GSLV IV is at this point in time in development or more like an idea emanating from the success of GSLV III. -