Underwater operations 1100Z to 2100Z daily 17 thru 31 aug by M/V wyatt candies in 19-31.87S 039-15.45W
South Atlantic Ocean · HYDROLANT 2091/16
What this record establishes
Archived notice · 2016-08-31 22:00Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA V E 663/16 170204Z AUG 16.. Issued 2016-08-17 05:28Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South Atlantic Ocean. The parsed report position is -19.531, -39.258. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the South Atlantic Ocean →
Activity windows · 15 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2016-08-17 11:00Z | 2016-08-17 21:00Z | — | 10 h |
| 2016-08-18 11:00Z | 2016-08-18 21:00Z | — | 10 h |
| 2016-08-19 11:00Z | 2016-08-19 21:00Z | — | 10 h |
| 2016-08-20 11:00Z | 2016-08-20 21:00Z | — | 10 h |
| 2016-08-21 11:00Z | 2016-08-21 21:00Z | — | 10 h |
| 2016-08-22 11:00Z | 2016-08-22 21:00Z | — | 10 h |
| 2016-08-23 11:00Z | 2016-08-23 21:00Z | — | 10 h |
| 2016-08-24 11:00Z | 2016-08-24 21:00Z | — | 10 h |
| … 7 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2016-08-17 05:28Z
- status
- Archived notice
- self-cancels
- 2016-08-31 22:00Z
- authority
- NAVAREA V E 663/16 170204Z AUG 16.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V E
- sea
- South Atlantic Ocean
- position
- -19.531, -39.258
- vessel
- M/V WYATT CANDIES · 3 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-EAST COAST. DNC 01. 1. UNDERWATER OPERATIONS 1100Z TO 2100Z DAILY 17 THRU 31 AUG BY M/V WYATT CANDIES IN 19-31.87S 039-15.45W. 2. CANCEL THIS MSG 312200Z AUG 16.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Collected reports in this area · survey operations
541 within 180 nm since 2000 · 53 in the last 12 months · 2 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Underwater operations 0800Z to 1800Z daily 02 thru 16 oct by M/V comando b and M/V top weather in 20-23.85S…2026-10-01
- Underwater operations in progress until 090259Z oct by M/V siem pilot in 22-25.32S 039-56.55W2026-09-29
- Underwater operations 0800Z to 1800Z daily 28 sep thru 12 oct by M/V calypso and M/V commando b in 20-23.18S…2026-09-27
- Underwater operations 0800Z to 1800Z daily 27 sep thru 11 oct by M/V comando b and M/V prime star in…2026-09-26
- Underwater operations 0800Z to 1800Z daily 26 sep thru 10 oct by M/V comando b in 19-51.63S 039-56.90W2026-09-25
- Underwater operations 0800Z to 1800Z daily 26 sep thru 10 oct by M/V comando b in 20-23.78S 040-09.43W2026-09-25
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
- Underwater operations 0800Z to 1800Z daily 26 sep thru 10 oct by M/V comando b in 19-51.63S 039-56.90WSurveys · 43.8 nm
- Foul ground until 06 dec 27 in area bound by 19-53.87S 039-59.68W, 19-54.15S 039-59.27W, 19-53.08S…Wrecks · 46.4 nm
- Underwater operations 0800Z to 1800Z daily 26 sep thru 10 oct by M/V comando b in 20-23.78S 040-09.43WSurveys · 72.6 nm
- Yellow odas buoy established in 17-58.12S 038-41.48W until 19 octNav aids · 99.2 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 06:35Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.