Other

The National Geospatial-Intelligence Agency warns that cancelled electronic navigational charts may cause unintended ECDIS behavior on some systems, including Navy VMS 9.5 and Raytheon Anschutz Synapsis NX.

Cancelled Electronic Navigational Chart (enc) Advisory · HYDROPAC 1823/25

What this record establishes

Listed in force

The latest collected record lists this warning as active. This is the status of the notice, not a live observation of conditions at the location.

Source and dates: NGA MSI in-force warnings (DailyMem*.txt). Issued 2025-07-17 17:51Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-09-29 11:17Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: Cancelled Electronic Navigational Chart (enc) Advisory. No usable coordinates were parsed; a location-based nearby search is unavailable. Check the original wording for limits and qualifications.

issued: 2025-07-17 17:51Z
status: Listed in force
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z

Original warning text

CANCELLED ELECTRONIC NAVIGATIONAL CHART (ENC)
ADVISORY.
USERS OF NGA ENC PRODUCTS ARE ADVISED OF
POTENTIAL UNINTENDED ECDIS BEHAVIOR WHEN
PROCESSING CANCELLED CHARTS, INCLUDING
REINSTALLATION OF RECENTLY CANCELLED CHARTS ON
SOME SYSTEMS WITHOUT OBVIOUS ERROR OR
WARNING MESSAGES.
NGA HAS CONFIRMED THIS ISSUE AFFECTS NAVY VMS 9.5 AND
RAYTHEON ANSCHUTZ SYNAPSIS NX SYSTEMS. THIS ISSUE DOES NOT
AFFECT NAVY ECDIS. OTHER SYSTEMS ARE CURRENTLY UNASSESSED.
USERS MAY REFERENCE NGA'S ENC CATALOG (GLOBAL
OR REGIONAL PRODUCT LISTINGS) FOR A LIST OF
CANCELLED CHARTS WHICH SHOULD BE UNINSTALLED
FROM ECDIS.
NGA'S GLOBAL ENC CATALOG IS AVAILABLE ON
HTTPS://MCDP.NGA.MIL, WITH REGIONAL ENC PRODUCT
LISTING SPREADSHEETS CONTAINED WITHIN EACH
REGION'S ZIP ON ESYNC, NGA'S WEBSITES, AND
WORLDCOVER DVD.
USERS MAY FILTER PRODUCT LISTINGS FOR EDITION OF
CXL AND SORT BY ISSUE DATE TO SEE MOST RECENT
CANCELLATIONS.
CHARTS CANCELLED WITHIN THE LAST 90 DAYS ARE
ACTIVELY DISSEMINATED BY NGA AND MOST LIKELY
CANDIDATES FOR INADVERTENT REINSTALLATION.
NGA IS CONSULTING WITH THE USER COMMUNITY TO
ASSESS POSSIBLE CHANGES TO THE CANCELLED CHART
DISSEMINATION PROCESS TO MITIGATE THIS POTENTIAL
UNINTENDED ECDIS BEHAVIOR.

Nearby notices listed in force · within 120 nm

No parsed position is available for this comparison.

Worldwide in the collected sources

23 other warnings listed in force · see all

Record snapshot 2026-09-29 11:21Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.