Ship-name archive · official navigational warnings

Harvest Chief

2 public warnings use this name, 2026-10-01. The notices cover Mediterranean Sea - Eastern Basin. Compare what each source reports, how its wording changes, and which identifiers are actually attached to the name.

These are mentions of a name. They can describe vessel operations, hazards or different ships using the same name.

What the reports establish

1 warning is recorded as in force. 1 has been cancelled. Cancellation concerns the notice; it does not establish the vessel’s current condition or a successful recovery.

First dated report in this archive

Issued 2026-10-01 00:00Z

Scientific research and underwater operations by vessels r/v harvest chief, denar pathfinder, denar echo and…

Surveys · Mediterranean Sea

NAVAREA III 147/26

Latest dated report in this archive

Issued 2026-10-01 07:57Z

Underwater operations in progress until 25 oct by M/V denar echo, M/V denar pathfinder and M/V harvest chief…

Surveys · Eastern Mediterranean Sea · Turkey

HYDROLANT 1952/26

Which vessel does this name identify?

No IMO or MMSI can be confidently attached to this name from the displayed warnings. A matching name alone cannot establish that these reports concern the same vessel.

Name styles in these reports: R/V, M/V. Interpreted vessel types: merchant vessel, survey / cable / supply vessel.

Warning record and geographic coverage

Dated report span: 0.3 days
Warning days covered: 1.2 days
Separate warning periods: 1
Warnings with a map location: 2 / 2

Warning days combine recorded issue-to-cancellation periods, counting overlapping days once. In-force notices extend to the calculation time. These periods describe the warning record, not days at sea or the duration of a vessel incident.

Mediterranean Sea - Eastern Basin warning history

What changed between reports

Compare adjacent dated warnings. Changes can describe a new operation or a different vessel with the same name. Distances compare warning map centers; they do not measure vessel travel. Source statements retain their wording, with numbering and spacing normalized.

2026-10-01reported area changedUNDERWATER OPERATIONS IN PROGRESS UNTIL 25 OCT BY M/V DENAR ECHO, M/V DENAR PATHFINDER AND M/V HARVEST CHIEF IN AREA BOUND BY 36-01.65N 032-45.72E, 36-00.97N 032-48.22E, 36-04.41N …

NAVAREA III 147/26 HYDROLANT 1952/26 · 0.3 days between issue dates

Warning type: Surveys (unchanged)
Area: Mediterranean Sea · Mediterranean Sea - Eastern Basin → Eastern Mediterranean Sea · Turkey · Mediterranean Sea - Eastern Basin
Map centers: 0 nautical miles apart

Wording in the later-listed report

UNDERWATER OPERATIONS IN PROGRESS UNTIL 25 OCT BY M/V DENAR ECHO, M/V DENAR PATHFINDER AND M/V HARVEST CHIEF IN AREA BOUND BY 36-01.65N 032-45.72E, 36-00.97N 032-48.22E, 36-04.41N 032-52.90E, 36-05.97N 032-57.70E, 35-49.44N 033-07.64E, 35-48.34N 033-04.13E, 35-29.77N 033-20.96E, 35-20.39N 033-30.58E, 35-19.87N 033-23.33E, 35-27.98N 033-17.81E, 35-47.12N 033-00.26E, 35-45.04N 032-53.67E

Wording only in the earlier-listed report

SCIENTIFIC RESEARCH AND UNDERWATER OPERATIONS BY VESSELS R/V HARVEST CHIEF, DENAR PATHFINDER, DENAR ECHO AND ENTRY

IN THE AREA DELIMITED BY THE FOLLOWING COORDINATES: 36 01.65 N - 032 45.72 E 36 00.97 N - 032 48.22 E 36 04.41 N - 032 52.90 E 36 05.97 N - 032 57.70 E 35 49.44 N - 033 07.64 E 35 48.34 N - 033 04.13 E 35 29.77 N - 033 20.96 E 35 20.39 N - 033 30.58 E 35 19.87 N - 033 23.33 E 35 27.98 N - 033 17.81 E 35 47.12 N - 033 00.26 E 35 45.04 N - 032 53.67 E WIDE BERTH REQUESTED

Map center of HYDROLANT 1952/26, issued 2026-10-01 07:57Z: 35.784, 33.058. The center may represent an operation area, route or hazard. It is not a confirmed vessel position. Issue time is the warning publication time; any observation time must be read in the original message.

Reading these reports

Underwater operations: Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
Survey operations: A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Wide berth requested: Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.
Date-time group (DTG): A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Area bound by: Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
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.
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.

All warning terms →

Source warnings · 2

Oldest dated warning first; undated messages follow. Open each entry to read its complete original text.

SurveysNAVAREA III 147/26Issued 2026-10-01 00:00Z

Scientific research and underwater operations by vessels r/v harvest chief, denar pathfinder, denar echo and…

Mediterranean Sea · Mediterranean Sea - Eastern Basin

Warning recorded as in force

Read original warning

MEDITERRANEAN SEA.
1. SCIENTIFIC RESEARCH AND UNDERWATER OPERATIONS BY VESSELS R/V HARVEST CHIEF, DENAR PATHFINDER, DENAR ECHO AND ENTRY.
BETWEEN 01 - 25 OCT 26.
IN THE AREA DELIMITED BY THE FOLLOWING COORDINATES:
36 01.65 N - 032 45.72 E
36 00.97 N - 032 48.22 E
36 04.41 N - 032 52.90 E
36 05.97 N - 032 57.70 E
35 49.44 N - 033 07.64 E
35 48.34 N - 033 04.13 E
35 29.77 N - 033 20.96 E
35 20.39 N - 033 30.58 E
35 19.87 N - 033 23.33 E
35 27.98 N - 033 17.81 E
35 47.12 N - 033 00.26 E
35 45.04 N - 032 53.67 E
WIDE BERTH REQUESTED.
2. CANCEL THIS MESSAGE 252059Z OCT 26.

SurveysHYDROLANT 1952/26Issued 2026-10-01 07:57Z

Underwater operations in progress until 25 oct by M/V denar echo, M/V denar pathfinder and M/V harvest chief…

Eastern Mediterranean Sea · Turkey · Mediterranean Sea - Eastern Basin

Warning cancelled 2026-10-01 16:15Z (dropped from inforce)

Read original warning

EASTERN MEDITERRANEAN SEA.
TURKEY.
1. UNDERWATER OPERATIONS IN PROGRESS
   UNTIL 25 OCT BY M/V DENAR ECHO,
   M/V DENAR PATHFINDER AND M/V HARVEST CHIEF
   IN AREA BOUND BY
   36-01.65N 032-45.72E, 36-00.97N 032-48.22E,
   36-04.41N 032-52.90E, 36-05.97N 032-57.70E,
   35-49.44N 033-07.64E, 35-48.34N 033-04.13E,
   35-29.77N 033-20.96E, 35-20.39N 033-30.58E,
   35-19.87N 033-23.33E, 35-27.98N 033-17.81E,
   35-47.12N 033-00.26E, 35-45.04N 032-53.67E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 1943/26.
3. CANCEL THIS MSG 260001Z OCT 26.

Not for navigation. Names and identifiers are extracted automatically from the cited warnings. This archive does not verify current vessel position, seaworthiness or incident resolution. Mariners must use official NAVAREA broadcasts and their national MSI service.