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5h ago

Russia and China Stage First Joint Submarine Patrol in Sea of Japan and East China Sea

Regional tracking underscored Moscow's disclosure of the undersea patrol, with Beijing limiting public detail.

Image
People take part in a ceremony marking the start of the upcoming Russian-Chinese joint naval drills in the Sea of Japan, following the arrival of Chinese military vessels in Vladivostok, Russia, July 31, 2025. Russian Defence Ministry/Russia's Pacific Fleet/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. NO RESALES. NO ARCHIVES. MANDATORY CREDIT.
Footage released by Russia's Pacific Fleet on August 25, 2025, appears to capture a United States Navy destroyer monitoring a Russian and Chinese joint naval patrol in the central Pacific Ocean on an unspecified date in August.

Overview

  • The Russian Pacific Fleet announced the first bilateral submarine patrol with a PLAN boat in early August, while Chinese state media cited the report without an official Chinese confirmation.
  • Russia said the diesel-electric submarine Volkhov covered roughly 2,000 miles from Vladivostok on a route through the Sea of Japan and the East China Sea before returning to base.
  • Japan’s Maritime Self-Defense Force tracked transits through the Tsushima Strait on August 13 and 20 and reported Volkhov on the surface during passage.
  • Footage released by Russian outlets showed what appears to be a U.S. Navy destroyer shadowing the joint surface group, and the Navy said it routinely tracks vessels in the region.
  • The undersea mission followed Joint Sea/Maritime Interaction 2025 near Vladivostok that included a bilateral submarine crew-evacuation drill, and a broader maritime patrol ran August 6–20 with a stop at Avacha Bay.