Surveys

Survey operations by M/V ievoli ivory: a. in progress along trackline joining 35-51.77N 024-39.95E,…

Aegean Sea · HYDROLANT 3563/20

What this record establishes

Archived notice · 2020-11-18 15:16Z

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 III 1546/20 171316Z NOV 20.. Issued 2020-11-17 13:43Z. 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
Aegean Sea. The parsed report position is 35.591, 24.826. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Aegean Sea →

issued
2020-11-17 13:43Z
status
Archived notice
authority
NAVAREA III 1546/20 171316Z NOV 20.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Aegean Sea
position
35.591, 24.826
vessel
M/V IEVOLI IVORY · 25 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

AEGEAN SEA.
CRETE.
DNC 09.
1. SURVEY OPERATIONS BY M/V IEVOLI IVORY:
   A. IN PROGRESS ALONG TRACKLINE JOINING
      35-51.77N 024-39.95E, 35-44.35N 024-34.88E.
   B. 18 NOV ALONG TRACKLINE JOINING
      35-44.35N 024-34.88E, 35-21.10N 025-09.54E.
   C. 19 NOV IN 35-21.10N 025-09.54E.
   ONE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 3538/20.
3. CANCEL THIS MSG 20 NOV 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.
Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · survey operations

177 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now

00
05
10
15
20
21

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.

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

Worldwide in the collected sources

55 survey operations listed in force · see all

Record snapshot 2026-10-01 08:56Z; 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.