On 01 OCT 2025, the Ministry of Defence announced that the Indian Navy's Submarine Rescue Unit (East), embarked on INS Nistar, participated in Exercise Pacific Reach (XPR-25), hosted by the Republic of Singapore Navy (RSN), from 15–25 Sept 2025, with over 40 nations participating. The exercise was conducted in two phases: a shore phase (15–20 Sep 2025) and a sea phase (21–25 Sep 2025), aimed at enhancing coordination and interoperability in submarine rescue. Three rescue units embarked on MV Swift Rescue (RSN), JS Chiyoda (Japan) and INS Nistar and operated alongside submarines from the Republic of Korea Navy, Japan Maritime Self-Defence Force (JMSDF) and Republic of Singapore Navy (RSN), simulating as Disabled Submarines (DISSUBs). During the sea phase in the South China Sea, the Indian DSRV Tiger X undertook its maiden dive outside the Indian Ocean Region, achieving a historic first mating with ROK Navy's Submarine Shin Dol-SeokS-082) on 23 Sep 2025 and later mating with RSN's submarine RSS Invincible. The exercise culminated on 25 Sep 2025, with a coordinated rescue drill led by the RSN, featuring the first three-asset (R3) rescue in Pacific Reach history.
Key Entities Referenced
Exercise Pacific Reach (XPR-25): Multinational coordinated rescue drill hosted by the Republic of Singapore Navy to enhance submarine rescue capabilities
Indian Navy's Submarine Rescue Unit (East): Showcased precision and professionalism at XPR-25
Deep Submergence Rescue Vehicle (DSRV): System used by India for submarine rescue
South China Sea: Location where sea phase of XPR-25 was conducted
Republic of Singapore Navy (RSN): Hosted the XPR-25 exercise
Ministry of Defence
INDIAN NAVY DEMONSTRATES GLOBAL
SUBMARINE RESCUE CAPABILITY AT EXERCISE
PACIFIC REACH (XPR-25)
Posted On: 01 OCT 2025 4:15PM by PIB Delhi
The Indian Navy’s Submarine Rescue Unit (East), embarked on INS Nistar, showcased precision and
professionalism at XPR-25, hosted by the Republic of Singapore Navy (RSN). Over three successive days, the
unit achieved three successful matings with international submarines, demonstrating the full spectrum of
intervention and rescue operations and establishing India’s position in the global submarine rescue arena.
XPR-25, held from 15–25 Sept 2025, featured participation from over 40 nations. Conducted in two phases
— a shore phase (15–20 Sep 2025) and a sea phase (21–25 Sep 2025) — the exercise was aimed at enhancing
coordination and interoperability in submarine rescue. Three rescue units embarked on Mother Ships — MV
Swift Rescue (RSN), JS Chiyoda (Japan) and INS Nistar — operated alongside the submarines from the
Republic of Korea Navy, Japan Maritime Self-Defence Force (JMSDF) and Republic of Singapore Navy
(RSN), simulating as Disabled Submarines (DISSUBs).
During the shore phase, professional exchanges and an international medical symposium allowed India to
present its Deep Submergence Rescue Vehicle (DSRV) system philosophy and post-rescue medical
preparedness. The sea phase in the South China Sea witnessed landmark achievements. On 23 Sep 2025, the
Indian DSRV Tiger X undertook its maiden dive outside the Indian Ocean Region, achieving a historic
first mating with ROK Navy’s Submarine Shin Dol-SeokS-082). The Indian DSRV achieved another
milestone by mating with RSN’s submarine RSS Invincible.
The culminating event on 25 Sep 2025 featured a coordinated rescue drill led by the RSN — the first three-
asset (R3) rescue in Pacific Reach history. INS Nistar spearheaded operations, localising and surveying the
datum passing requisite information to MV Swift Rescue and JS Chiyoda. With RSS Invincible simulating
the distressed submarine, India’s ROV and Indian Navy DSRV were deployed in rapid succession, achieving
mating within one hour of the dive. The performance highlighted the Indian Navy’s exceptional proficiency
and contributed substantially to the successful conduct of the multinational coordinated R3 rescue - a first for
Exercise Pacific series.
XPR-25 marked a watershed moment in India’s submarine rescue journey, with the Indian DSRV’s maiden
foreign submarine matings and participation in a multinational coordinated rescue drill reinforcing India’s
capability and commitment to global submarine safety.****
VM/SKY
(Release ID: 2173604)