hi... this is chetan from india. do not know anything about getting here, but can advise about india.
a fair number of cruising yachts do stop by, mostly between october and march
they usually make port in mumbai and then proceed down to goa and cochin
i think most of them come from south east asia - singapore / phuket / langkawi / etc - though i am not sure
there are no marina facilities yet in india but you can get decent fibre glass work and engine work done. for fuel you will have to pay a price to get it transported to your boat or line up at a fishing dock.
shaun weng who is a member on www.7knots.com
was here last year on his circumnavigation. i also know of a chap called howard moon from Australia who used to come across every year on a Morgan Giles designed yacht.
if there is anything i can do to help you with your planning do let me know