Machilipatnam (BY 529): Mahe-class Anti-Submarine Warfare Shallow Water Craft

Context

1. The Indian Navy recently launched Machilipatnam (BY 529), the seventh vessel of the Mahe-class Anti-Submarine Warfare Shallow Water Craft (ASW-SWC) programme. The vessel derives its name from Machilipatnam, the historic port city in Krishna district, Andhra Pradesh. It has been built by Cochin Shipyard Limited (CSL) for the Indian Navy.

Technical Specifications

1. Displacement: Approximately 900 tonnes.
2. Maximum Speed: Up to 25 knots.
3. Operational Endurance: Around 1,800 nautical miles.
4. Indigenous Content: More than 80%, supporting the Atmanirbhar Bharat initiative.

Combat Systems & Operational Roles

1. Combat Systems

1. Hull-mounted Sonar: An indigenous sonar system installed on the ship’s hull to detect and track underwater objects, including submarines.
2. Low-frequency Variable Depth Sonar: An indigenous sonar that can be deployed at different depths to improve submarine detection under varying underwater conditions.

2. Operational Roles

1. Underwater Surveillance
2. Anti-Submarine Warfare (ASW)
3. Low Intensity Maritime Operations (LIMO)
4. Mine Warfare

Strategic Significance

1. Strengthens Coastal Security: Enhances the Indian Navy’s capability to detect and counter submarine threats in shallow coastal waters.
2. Enhances Maritime Domain Awareness (MDA): Improves surveillance and monitoring of maritime activities for timely identification and response to maritime threats.
3. Promotes Defence Indigenisation: Advances the Atmanirbhar Bharat initiative through the integration of more than 80% indigenous content and domestically developed technologies.

UPSC FAQs

Q1. What is Machilipatnam (BY 529)?

Ans: Machilipatnam (BY 529) is the seventh Mahe-class Anti-Submarine Warfare Shallow Water Craft (ASW-SWC) built for the Indian Navy to strengthen coastal defence and anti-submarine capabilities.

Q2. Which organisation built Machilipatnam (BY 529)?

Ans: The vessel has been built by Cochin Shipyard Limited (CSL) for the Indian Navy under India’s indigenous warship construction programme.

Q3. What is Anti-Submarine Warfare (ASW)?

Ans: Anti-Submarine Warfare (ASW) refers to military operations aimed at detecting, tracking and neutralising enemy submarines using specialised ships, aircraft, submarines and underwater sensors.

Q4. What are the major capabilities of Machilipatnam (BY 529)?

Ans: The warship is equipped for underwater surveillance, anti-submarine warfare (ASW), low intensity maritime operations (LIMO) and mine warfare. It also carries indigenous hull-mounted sonar and low-frequency variable depth sonar.

Q5. What is Maritime Domain Awareness (MDA)?

Ans: Maritime Domain Awareness (MDA) is the continuous monitoring and assessment of activities in the maritime domain to enhance maritime security, improve surveillance and enable timely response to potential threats.

Q6. How does Machilipatnam (BY 529) support the Atmanirbhar Bharat initiative?

Ans: The vessel incorporates more than 80% indigenous content and features indigenously developed technologies, promoting self-reliance in India’s defence manufacturing sector.