Oyster Rock, Islands of Mumbai Harbour Oyster Rock is an island in the Mumbai harbour that is fortified, and owned by the Indian Navy.
Oyster Rock is an island in the Mumbai harbour in the Indian state of Maharashtra. Oyster Rock is fortified, and owned by the Indian Navy. For a short while, the Oyster Rock was used as a naval museum. The Maharashtra government had thought of anchoring the decommissioned INS Vikrant (now a naval museum) on this Oyster Rock.