Surveys

Survey operations in progress until 28 feb 18 by M/V olympic delta along trackline joining 42-59.07N…

Black Sea · HYDROLANT 3875/17

issued: 2017-11-30 17:37Z
status: cancelled 2017-12-12 13:36Z (archive)
cancels: HYDROLANT 3339/17
authority: TURKEY 232/17 301335Z NOV 17.
sea: Black Sea
position: 42.912, 31.608
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BLACK SEA.
DNC 10.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 28 FEB 18
   BY M/V OLYMPIC DELTA ALONG TRACKLINE JOINING
   42-59.07N 032-20.77E, 42-58.07N 032-09.67E,
   42-54.77N 031-36.42E, 42-50.18N 030-52.17E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 3339/17.
3. CANCEL THIS MSG 01 MAR 18.

This area · survey operations

223 within 180 nm since 1999 · 9 in the last 12 months · 8 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations in progress until 18 jan 18 by M/V olympic delta along trackline joining 42-59.1N…cancels · 2017-10-18
Survey operations in progress until 18 jan 18 by M/V olympic delta along trackline joining 42-59.1N…replaced · 2017-10-18
Cancel HYDROLANT 3875/17 and this msgcancelled by · 2017-12-12

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Worldwide now

83 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.