India Navy's frigate INS Betwa pictured during an operational demonstration, some 50 kilometers northeast off Mumbai coast, on November 14, 2011.
India Navy’s frigate INS Betwa pictured during an operational demonstration, some 50 kilometers northeast off Mumbai coast, on November 14, 2011.

SAN FRANCISCO (Diya TV) — An enormous Indian Navy frigate tipped over on its side Monday, killing two people and injuring more than a dozen others.

The guided missile frigate INS Betwa, a 3,850-ton ship measuring more than 400 feet in length, rolled over on a 90-degree angle while being docked, Indian Navy spokesman D.K. Sharma said.

“Our first priority is to get the ship in an upright position,” Sharma said. “It is an unfortunate incident and one of the first in the history of the Indian Navy.”

Sharma said an investigation is underway to determine what caused the accident, which happened just two days after India celebrated Navy Day on December 4.

The INS Betwa, a Brahmaputra class vessel, was first commissioned on July 7, 2004.

The Betwa was in dock for repairs below the waterline. Work on the ship had just been completed and the graving dock was being flooded when the ship tipped over. Images from the scene show her mast broken off and her port side partially submerged.

The graving dock incident is the Indian Navy’s third major accident at Mumbai in five years.

In 2011, the frigate Vidhyagiri collided with a merchant vessel and sank in Mumbai’s harbor. The frigate had officers’ families on board at the time of the collision; none were injured. In 2013, the submarine Sindurakshak exploded and sank at pier during a torpedo replenishment. 18 servicemembers were killed in the accident. In 2014, two officers were killed in a fire on a nuclear submarine off the coast of Mumbai.