Surveys
Survey operations 200001Z mar until further notice in area bound by 25-55.65N 051-31.00E, 26-04.36N…
Persian Gulf · HYDROPAC 925/20
What this record establishes
Archived notice · 2020-09-07 15:38Z
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 IX 119/20 191457Z MAR 20.. Issued 2020-03-19 15:43Z. 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
- Persian Gulf. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Hazardous operations 15 thru 24 mar in area bound by 24-25.0N 057-40.0E, 24-18.0N 057-40.0E, 24-09.0N…cancelled by this notice
- Cancel HYDROPAC 925/20 and this msglater cancellation notice
- issued
- 2020-03-19 15:43Z
- status
- Archived notice
- authority
- NAVAREA IX 119/20 191457Z MAR 20.
- NAVAREA
- NAVAREA IX · named as the source of this relay
- sea
- Persian Gulf
- position
- 26.364, 51.925
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
PERSIAN GULF. QATAR. DNC 10. 1. SURVEY OPERATIONS 200001Z MAR UNTIL FURTHER NOTICE IN AREA BOUND BY 25-55.65N 051-31.00E, 26-04.36N 051-34.62E 26-37.32N 051-58.56E, 26-42.74N 051-57.18E 26-42.67N 051-58.41E, 26-33.55N 052-10.36E 26-22.32N 052-18.13E, 26-20.52N 051-56.37E 25-54.46N 051-33.11E. 2. CANCEL HYDROPAC 822/20.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.
Collected reports in this area · survey operations
436 within 180 nm since 2000 · 5 in the last 12 months · 3 listed in force now
00
05
10
15
20
25
26
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.
- Survey operations 18 sep until further notice by M/V fugro resilience in area bound by 26-33.31N 051-04.86E,…2026-09-17
- Survey operations in progress until 05 sep by M/V furgo proteus in areas bound by: a. 26-33.34N 051-03.56E,…2026-08-04
- Survey operations in progress until further notice by M/V halul 41 in area bound by 26-23.34N 051-47.10E,…2026-01-30
- Survey operations in progress until 31 dec by M/V astro aquila in area bound by 26-42.50N 051-53.50E,…2025-11-27
- Underwater operations in progress until further notice by M/V constructor in area bound by 26-28.58N…2025-10-28
- Survey operations in progress until 31 dec by M/V HALUL-51 with submersible along tracklines joining: a.…2025-10-01
Month of issue in the collected archive
J
F
M
A
M
J
J
A
S
O
N
D
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
- Pipeline operations 10 aug thru 10 nov by vessel barge derrick barge 30 in area bound by 26-31.70N…Cable ops · 9.7 nm
- Survey operations in progress until further notice by M/V halul 41 in area bound by 26-23.34N 051-47.10E,…Surveys · 12 nm
- Bh jacket light fl(r) 4 sec temporarily established in 26-38.41N 051-56.90ENav aids · 16.6 nm
- Wave rider buoy, fl 5 y 10 sec, temporarily established in 26-39.57N 051-57.22ENav aids · 17.8 nm
- Underwater operations in progress until further notice by M/V HYSY289 in area bound by 26-41.99N 051-53.26E,…Surveys · 18 nm
- Pipeline operations 18 sep until further notice by barge mc dermott in area bound by 25-59.10N 051-36.60E,…Cable ops · 22.9 nm
- Survey operations 18 sep until further notice by M/V fugro resilience in area bound by 26-33.31N 051-04.86E,…Surveys · 35.2 nm
- Foul ground, anchor with 2.5 shackle chain reported in 25-07.69N 052-53.09EWrecks · 90.6 nm
- Zaqqum buoy in 25-06.56N 053-25.06ENav aids · 110.4 nm
- RACON at dalma buoy 24-32.51N 052-27.85E inoperativeNav aids · 113.2 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 03:09Z; 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.