Consider the following statements about Stealth Frigate INS Vindhyagiri:

1. Vindhyagiri, named after the mountain range in Karnataka, is the sixth ship of the Project 17A program.

2. These warships are follow-ons of the Project 17 Class Frigates (Shivalik Class), with improved stealth features, advanced weapons and sensors and platform management systems.

3. Project 17A ships have been designed in-house by the Indian Navy's Warship Design Bureau, the pioneer organization for all warship design activities.

4. 100 per cent of the orders for equipment and systems of Project 17A ships are from indigenous firms, including Micro, Small, and Medium Enterprises (MSMEs).

How many of the above statements is/are correct?