Surveys

Underwater operations in progress until 24 mar 13 by M/V deep blue and M/V alesta dalgiclik vicinity of…

Sea of Marmara · HYDROLANT 2123/12

issued: 2012-09-13 12:44Z
status: cancelled 2013-03-25 00:01Z (archive)
cancels: HYDROLANT 2069/12 HYDROLANT 2021/12
authority: NAVAREA III 375/12 131201Z SEP 12 - NAVAREA XIX 109/12 131125Z SEP 12.
sea: Sea of Marmara
position: 40.893, 28.953
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SEA OF MARMARA.
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 24 MAR 13
   BY M/V DEEP BLUE AND M/V ALESTA DALGICLIK
   VICINITY OF TRACKLINE JOINING
   40-57.89N 028-41.43E, 40-56.74N 028-42.33E,
   40-55.51N 028-50.89E, 40-53.82N 028-57.80E,
   40-50.01N 029-07.13E, 40-50.76N 029-11.13E,
   40-51.25N 029-13.18E. WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 2069/12(43).
3. CANCEL HYDROLANT 2021/12.
4. CANCEL THIS MSG 25 MAR 13.

This area · survey operations

129 within 180 nm since 1999 · 6 in the last 12 months · 4 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Underwater operations in progress until 24 mar 13 by M/V deep blue and M/V alesta dalgiclik vicinity of…cancels · 2012-09-01
Hazardous operations 0900Z to 1800Z daily 09 thru 19 sep in areas bound by: a. 69-26.30N 015-32.15E,…cancels · 2012-09-07
Underwater operations in progress until 24 mar 13 by M/V deep blue and M/V alesta dalgiclik vicinity of…replaced · 2012-09-01
Hazardous operations 0900Z to 1800Z daily 09 thru 19 sep in areas bound by: a. 69-26.30N 015-32.15E,…replaced · 2012-09-07

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.