**Executive Summary**
The Mazagon Dock Shipbuilders Limited (MDL), Indian Navy (IN), and Brazilian Navy (BN) signed a Memorandum of Understanding (MoU) on December 9, 2025, in Brasilia, Brazil. The MoU aims to strengthen cooperation in the maintenance of Scorpène-class submarines and other naval ships. The agreement is valid for ten years and may be extended with mutual consent.
**Key Points / Main Content**
* **General Provisions:**
* The MoU establishes a framework for exchange of technical information, maintenance philosophies, industrial practices, spare parts support, and personnel training.
* The MoU aims to enhance operational availability and lifecycle support for Scorpène-class platforms.
* The agreement is valid for ten years and extendable through mutual written consent.
* No financial transfers will occur between parties, each retaining autonomy and cost responsibility.
* **Areas of Cooperation:**
* Exchange of technical expertise related to maintenance procedures, repair methodologies, special tools, equipment, and lifecycle support.
* Cooperation across the wider defence industrial ecosystem.
* Promotion of joint research, development, innovation, and training in weapon systems, machinery, and other critical naval technologies.
* Annual technical delegations will meet to review advancements, share practices, assess maintenance cases, and identify future opportunities.
* Strict protocols for confidentiality and secure handling of sensitive information are reaffirmed.
* **Role of MDL:**
* MDL brings industrial capability, technological depth, and submarine manufacturing expertise.
* MDL is positioned as a key contributor to global submarine maintenance.
**Impact Analysis**
**MDL (Mazagon Dock Shipbuilders Limited)**
* **Impact:** MDL strengthens its position as a key player in submarine maintenance.
* **Action Required:** Participate in technical expertise exchanges and cooperation initiatives.
**Indian Navy (IN)**
* **Impact:** Enhanced submarine readiness and support for strategic interests.
* **Action Required:** Participate in the exchange of technical information, coordinate with MDL and the Brazilian Navy.
**Brazilian Navy (BN)**
* **Impact:** Enhanced submarine readiness and support for strategic interests.
* **Action Required:** Participate in the exchange of technical information, coordinate with MDL and the Indian Navy.
Key Entities Referenced
Memorandum of Understanding (MoU): Agreement between MDL, Indian Navy, and Brazilian Navy for cooperation on Scorpène-class submarine and naval ship maintenance.
Scorpène-class Submarine: Type of submarine subject to maintenance cooperation between India and Brazil.
Mazagon Dock Shipbuilders Limited (MDL): Indian shipyard involved in the MoU for submarine and naval ship maintenance.
Indian Navy (IN): One of the parties involved in the MoU focusing on naval cooperation and submarine maintenance.
Brazilian Navy (BN): One of the parties involved in the MoU focusing on naval cooperation and submarine maintenance.
Ministry of Defence
MDL, Indian Navy & Brazilian Navy Sign
Landmark MoU on Cooperation for Scorpène-
Class Submarine & Naval Ship Maintenance
प्रव तथ: 10 DEC 2025 7:31PM by PIB Mumbai
Mumbai : 10 December 2025
Mazagon Dock Shipbuilders Limited (MDL), a premier Government of India shipyard,
today announced the signing of a Memorandum of Understanding (MoU) with the
Indian Navy (IN) and the Brazilian Navy (BN) on 09 December 2025 at Brasilia,
Brazil to strengthen cooperation in the maintenance of Scorpène-class submarines
and other naval ships, marking a significant milestone in India–Brazil defence
collaboration.
The Tripartite MoU establishes a comprehensive framework for exchange of
technical information, maintenance philosophies, industrial practices, spare parts
support, and personnel training, aimed at enhancing operational availability and
lifecycle support for Scorpène-class platforms operated by both India and Brazil.
The MoU was signed by Admiral Dinesh K. Tripathi, PVSM, AVSM, NM, Chief of the
Naval Staff, Indian Navy, representatives of the Brazilian Navy and Capt. Jagmohan,
Chairman & Managing Director, CMD, Mazagon Dock Shipbuilders Limited
The Parties reaffirmed that the agreement would deepen defence ties, enhance
submarine readiness, and support mutual strategic interests in the maritime
domain. The MoU is valid for ten years from the date of signing and may be
extended through mutual written consent.
Key Areas of CooperationThe Parties will actively exchange technical expertise related to maintenance
procedures, repair methodologies, special tools, equipment, and lifecycle support for
submarines and military ships, while also cooperating across the wider defence
industrial ecosystem—including manufacturers, technology providers, spare-part
suppliers, and shipyard infrastructure developers.
The MoU further promotes joint research, development, innovation, and training in
weapon systems, machinery, and other critical naval technologies. To ensure
sustained progress, technical delegations from all three Parties will meet annually,
alternating between India and Brazil, to review advancements, share best practices,
assess high-relevance maintenance cases, and identify future opportunities for
cooperation. The Parties also reaffirm strict protocols for confidentiality and secure
handling of sensitive information in accordance with national regulations and
international commitments. Additionally, the MoU specifies that no financial
transfers will occur between the Parties, with each retaining full autonomy and
responsibility for its own costs.
As the Indian shipyard that built the Scorpène-class submarines under the P-75
program, MDL brings extensive industrial capability, technological depth, and
submarine manufacturing expertise to this trilateral cooperation.
This MoU positions MDL as a key contributor to global submarine maintenance
ecosystems and advances India’s vision of emerging as a trusted defence partner
for friendly nations.
PIB Mumbai | Saurabh Khekde/ Priti Malandkar
Follow us on social media: @PIBMumbai /PIBMumbai /pibmumbai pibmumbai[at]gmail[dot]co
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