India’s fourth-generation deep-ocean submersible, Matsya-6000, has successfully completed its wet testing at the harbour in Chennai.

♦ The National Institute of Ocean Technology (NIOT) announced this on 17 February 2025—the test was conducted as part of the Samudrayan Project

♦ ‘Samudrayan’ is an ambitious project of the Ministry of Earth Sciences (MoES) and is being implemented as part of the `4,800 crore ‘Deep Ocean Mission’ (DOM).

♦ Under the ‘Samudrayan’ project ‘Matsya-6000’ will descend up to a depth of 6,000 metres in the Indian Ocean in stages by 2026. NIOT is an autonomous society under the MoES.