Alibag or Alibaug is a town on the Konkan coast of Maharashtra near Mumbai. It's best known for its historic marine forts, fine beaches and clean water.
There are ferries and catamarans available from the Gateway of India, Mumbai. The journey takes 2 hours. However, service is suspended during the rains, i.e. May-October. The ferry takes you to Rewas and you are taken on a bus to Alibag. The cost of the bus trip is usually included in the ferry fare. This is the recommended way of getting to Alibag. A one-way trip by ferry costs ₹90 and by catamaran ₹150, both types of tickets include a bus trip to Alibag.