Surveys
Underwater operations 280600Z to 281600Z jan in area bound by 38-48N 017-25E, 38-40N 018-00E, 38-15N…
HYDROLANT 177/99
- issued
- 1999-01-27 16:22Z
- status
- cancelled 1999-01-28 00:00Z (archive)
- self-cancels
- 1999-01-28 17:00Z
- sea
- Ionian Sea
- position
- 38.529, 17.846
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS 280600Z TO 281600Z JAN IN AREA BOUND BY 38-48N 017-25E, 38-40N 018-00E, 38-15N 018-45E, 38-30N 017-12E. 2. CANCEL THIS MSG 281700Z JAN.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-01-28 06:00Z | 1999-01-28 16:00Z | — | 10 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · survey operations
131 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
20
23
- Underwater operations 28 aug thru 03 sep by M/V janus II in area bound by 40-58.27N 018-47.52E, 40-48.67N…2023-08-27
- Underwater operations 28 aug thru 03 sep in area bound by 40-58.27N 018-47.52E, 40-48.67N 018-24.72E,…2023-08-25
- Underwater operations by M/V handin tide with submersible: a. 01 thru 05 jun in area within ten miles of…2022-05-27
- Survey operations in progress until 15 jan by M/V sw cook towing one 12000 meter long cable in area bound by…2022-01-14
- Survey operations 12 jan thru 25 feb by M/V sw cook towing one 1200 meter long cable in area bound by…2022-01-11
- Underwater operations in progress until 07 jan by M/V edda flora with submersible along trackline joining…2022-01-04
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
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
86 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.