**Summary:**
On September 16, 2025, the Ministry of Defence (MoD) accepted delivery of DSC A20, the first of five indigenously designed and constructed Diving Support Craft (DSC), from Ms. Titagarh Rail Systems Ltd (TRSL), Kolkata. The contract for the construction of these DSCs was awarded to TRSL on February 12, 2021. DSC A20 is intended for diving operations in coastal waters and is equipped with advanced diving equipment. The vessel features a catamaran hull, displacing approximately 380 tons, and was built according to Indian Register of Shipping (IRS) standards. Hydrodynamic analysis and model testing during the design phase were conducted at the Naval Science and Technological Laboratory (NSTL), Visakhapatnam. This project aligns with the Government of India's "Make in India" initiative.
Key Entities Referenced
Ministry of Defence: The Indian government ministry responsible for defence.
DSC A20: The name of the first Diving Support Craft (DSC) delivered to the Indian Navy.
Indian Navy: The naval branch of the Indian Armed Forces.
Titagarh Rail Systems Ltd TRSL: The company that designed and constructed the Diving Support Craft.
Kolkata, West Bengal: The city in West Bengal where the Diving Support Craft was delivered.
Diving Support Craft DSC: A type of naval vessel designed to support diving operations.
Indian Register of Shipping IRS: An independent ship classification society providing standards and rules for ship construction and survey.
Naval Science and Technological Laboratory NSTL, Visakhapatnam, Andhra Pradesh: A laboratory in Visakhapatnam that conducted hydrodynamic analysis model testing of the ships.
Ministry of Defence
DELIVERY OF DSC A20 (YARD 325), FIRST SHIP
OF 05 X DIVING SUPPORT CRAFT TO INDIAN
NAVY
Posted On: 17 SEP 2025 5:06PM by PIB Delhi
DSC A20, the first indigenously designed and constructed Diving Support Craft was delivered by M/s
Titagarh Rail Systems Ltd (TRSL), Kolkata to the Indian Navy on 16 Sep 2025 at Kolkata.
The contract for building 05 x Diving Support Craft (DSC) was signed between MoD and M/s Titagarh Rail
Systems Limited (TRSL), Kolkata on 12 Feb 2021. DSC A20 is designed to undertake diving operations in
coastal waters and is being fitted with state of the art diving equipment. The ship has a catamaran hull, with
a displacement of approx 380 tons.
The ship is indigenously designed and built under relevant Naval Rules and Regulations of Indian Register of
Shipping (IRS). The hydrodynamic analysis/ model testing of the ships during the design stage was
undertaken at Naval Science and Technological Laboratory (NSTL), Visakhapatnam. These ships are
proud flag bearers of Make in India initiative of Government of India (GoI).________________________________________________________________
VM/SPS 192/25
(Release ID: 2167635)