Surveys
Underwater operations in progress until further notice by M/V bon accord within four miles of 50-21.5N…
HYDROLANT 1579/99
- issued
- 1999-07-31 19:45Z
- status
- cancelled 1999-08-03 13:48Z (archive)
- cancels
- HYDROLANT 1562/99
- authority
- WZ 1360/99 311746Z JUL 99
- sea
- English Channel
- position
- 50.358, -0.342 · r 4.0 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V BON ACCORD WITHIN FOUR MILES OF 50-21.5N 000-20.5W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 1562/99.
This area · survey operations
556 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
20
23
- Survey operations in progress until further notice by M/V mintaka I in vicinity of trackline joining…2023-08-06
- Underwater operations 180800Z to 192200Z nov by M/V willchallenge in vicinity of 50-19.0N 004-14.7W2022-11-17
- Survey operations 15 sept thru 20 oct by M/V thlassa in vicinity of trackline joining 48-30.00N 006-00.00W,…2022-09-14
- Survey operations in progress until further notice by M/V nora b in vicinity of trackline joining 51-22.80N…2022-07-16
- Survey operations in progress until further notice by M/V nora b in vicinity of trackline joining 50-46.80N…2022-07-12
- Underwater operations in progress until further notice by M/V havila phoenix in vicinity of trackline…2022-05-11
Season · when survey operations happen here
J
F
M
A
M
J
J
A
S
O
N
D
month of issue, all years in the archive
Timeline
- Underwater operations in progress until further notice by M/V bon accord within five miles of 50-30N 000-25Wreplaced · 1999-07-29
- Cancel HYDROLANT 1579/99 and this msg, operations completedcancelled by · 1999-08-03
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
84 survey operations in force · see all
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.