An offshore supply vessel of the state-run Shipping Corporation of India (SCI) sunk off the Mumbai coast this evening, officials said. "All the 16 crew members on board SCI Ratna have been rescued," Director General of Shipping Malini Shankar told PTI. The incident occurred around 7.30 pm, she said. SCI chairman Capt Anoop Sharma said all the crew members were immediately rescued by another vessel operating in close vicinity and are on the way to Mumbai now.