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NAVIGATIONAL WARNINGS · FOR OFFICERS OF THE WATCH AND MASTERS

NAVAREA XI (11) warnings

NAVAREA XI (11) is one of the 21 sea areas of the World-Wide Navigational Warning Service, coordinated by Japan (Japan Coast Guard). Its waters reach the ports of Japan, Indonesia, China, the Philippines and Malaysia and 19 more countries. NaviBoss draws its in-force warnings on the chart, refreshed every few hours.

NAVAREAXI (11)World-Wide Navigational Warning Service
CoordinatorJapanbroadcasts the warnings
Countries24with ports in the area
Extent12°S to 45°N95°E to 180°, approximate
NAVAREA XI as NaviBoss draws it (approximate limits: the official ones are in IHO/IMO publications). A planning sketch, not a chart.

Countries with ports in NAVAREA XI

Each country opens its port guides. Ports on two coasts can sit in two areas.

Voyages through NAVAREA XI

Canals and straits in this area

Questions about NAVAREA XI

Who coordinates NAVAREA XI (11)?

NAVAREA XI is coordinated by Japan (Japan Coast Guard). The coordinator collects the navigational warnings for the area and broadcasts them by satellite at scheduled times, at least twice a day.

Which countries are in NAVAREA XI?

Countries with ports in NAVAREA XI include Japan, Indonesia, China, the Philippines, Malaysia, Vietnam, South Korea and Thailand, 16 more in the list on this page.

Where can I see the NAVAREA XI warnings in force?

The official in-force list is published by the coordinator, Japan (Japan Coast Guard), and broadcast by SafetyNET. NaviBoss draws the in-force warnings on the chart, refreshed every few hours, and lists those near your planned route. Always keep the official list on board.

Which voyages pass through NAVAREA XI?

For example Rotterdam to Singapore, Rotterdam to Shanghai, Hamburg to Shanghai and Antwerp to Singapore. A ship keeps the warnings of every NAVAREA it passes through.

The other NAVAREAs

NAVAREA XI warnings on your route

Open the Warnings tool to see the in-force warnings on the chart, the ones near your planned route first, and export them to your ECDIS as a user chart. Free with an account.

Open the Warnings tool →

About our guides

NaviBoss guides are written and checked by maritime industry experts, masters and deck officers. Each one is built from the same data the planner uses, dated, and rebuilt when that data changes. Spotted something wrong? Tell us on the feedback board.

A planning aid, not for navigation. The official in-force list from the NAVAREA coordinator, your NAVTEX and SafetyNET receivers and the latest Notices to Mariners always come first.