Aegean Sea

IHO sea area 28h · 23° to 28° E, 35° to 41° N

in force
3
last 12 months
3
archive messages
1,492
categories
11

What the archive shows

1,492 messages are recorded since 1997-11-14 for the Aegean Sea. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.

Exercises accounts for 1,129 of 1,492 recorded messages (76%), the largest category group in this selection.

The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.

In force now · 3

  1. HYDROLANT 237/26 · Missiles2026-02-03
    Missile operations occur daily Wednesday through Saturday in the Aegean Sea until June 14 and September 16 through December 31.
  2. HYDROLANT 238/26 · Exercises2026-02-03
    Hazardous operations occur daily 0500Z to 1500Z until 14 June and 16 September to 31 December, excluding Fridays, Saturdays, Sundays, and holidays, in Aegean Sea area.
  3. HYDROLANT 236/26 · Exercises2026-02-03
    Hazardous operations take place daily in the Aegean Sea until 14 June and from 16 September to 31 December, in a defined area.

Longest in force

  1. HYDROLANT 236/26 · Exercises2026-02-03
    Hazardous operations take place daily in the Aegean Sea until 14 June and from 16 September to 31 December, in a defined area.
  2. HYDROLANT 238/26 · Exercises2026-02-03
    Hazardous operations occur daily 0500Z to 1500Z until 14 June and 16 September to 31 December, excluding Fridays, Saturdays, Sundays, and holidays, in Aegean Sea area.
  3. HYDROLANT 237/26 · Missiles2026-02-03
    Missile operations occur daily Wednesday through Saturday in the Aegean Sea until June 14 and September 16 through December 31.

By year

97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · available archive

Exercises1,12976%
Surveys14310%
Cable ops876%
Missiles493%
Quakes332%
Incidents221%
Nav aids121%
Other70%
Ordnance60%
Debris20%
Mines20%

Archive · 1,489 cancelled

  1. HYDROLANT 840/20 · Exercises2020-03-04 → 2020-03-06
    Hazardous operations 051800Z to 052000Z and 060900Z to 061100Z mar in area bound by 37-27-06N 027-02-42E,…
  2. HYDROLANT 839/20 · Exercises2020-03-04 → 2020-03-06
    Hazardous operations 041700Z to 041900Z, 050900Z to 051100Z, 061600Z to 061800Z mar in area bound by…
  3. HYDROLANT 838/20 · Exercises2020-03-04 → 2020-03-06
    Hazardous operations 051800Z to 052000Z and 060900Z to 061100Z mar in area bound by 37-35-42N 026-37-34E,…
  4. HYDROLANT 837/20 · Exercises2020-03-04 → 2020-03-06
    Hazardous operations 051800Z to 052000Z and 060900Z to 061100Z mar in area bound by 37-52-13N 026-49-05E,…
  5. HYDROLANT 836/20 · Exercises2020-03-04 → 2020-03-05
    Hazardous operations 041700Z to 041900Z, 0900Z to 1000Z and 1800Z to 2000Z daily 05 and 06 mar in area bound…
  6. HYDROLANT 830/20 · Exercises2020-03-04 → 2020-03-06
    Gunnery exercises 061400Z to 061500Z mar in area bound by 38-56N 025-25E, 39-04N 025-42E, 39-15N 025-38E,…
  7. HYDROLANT 820/20 · Exercises2020-03-03 → 2020-03-06
    Gunnery exercises 1800Z to 0600Z commencing daily 04 and 05 mar in area bound by 36-55N 023-05E, 37-12N…
  8. HYDROLANT 818/20 · Exercises2020-03-03 → 2020-03-06
    Hazardous operations 060600Z to 061000Z mar in area bound by 40-30.00N 025-53.00E, 40-35.00N 024-58.00E,…
  9. HYDROLANT 811/20 · Other2020-03-02 → 2020-03-03
    Hazardous operation 030600Z to 031500Z mar in area bound by 37-29.32N 026-56.49E, 37-29.20N 026-58.46E,…
  10. HYDROLANT 810/20 · Surveys2020-03-02 → 2020-03-18
    Survey operations 0800Z to 1500Z daily 04, 05, 17 and 18 mar in area bound by 35-32N 024-28E, 35-32N…
  11. HYDROLANT 809/20 · Exercises2020-03-02 → 2020-03-06
    Hazardous operations 051600Z to 060400Z mar in area bound by 37-50.0N 023-10.0E, 37-56.50N 023-10.0E,…
  12. HYDROLANT 798/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031330Z and 031530Z to 032000Z mar in area bound by 37-29.32N 026-56.49E,…
  13. HYDROLANT 797/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031330Z and 031530Z to 032000Z mar in area bound by 37-34.59N 026-31.41E,…
  14. HYDROLANT 796/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031330Z and 031530Z to 032000Z mar in area bound by 37-59.14N 026-35.32E,…
  15. HYDROLANT 795/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031330Z and 031530Z to 032000Z mar in area bound by 37-29.17N 027-04.32E,…
  16. HYDROLANT 794/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031330Z and 031530Z to 032000Z mar in area bound by 37-54.17N 026-49.32E,…
  17. HYDROLANT 793/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031330Z and 031530Z to 032000Z mar in area bound by 37-53.17N 027-02.00E,…
  18. HYDROLANT 792/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031500Z mar in area bound by 38-33.06N 025-33.35E, 38-33.12N 025-33.41E,…
  19. HYDROLANT 791/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 030600Z to 031500Z mar in area bound by 38-30.16N 026-16.52E, 38-30.16N 026-16.54E,…
  20. HYDROLANT 782/20 · Exercises2020-03-02 → 2020-03-03
    Hazardous operations 0600Z to 1500Z daily 01 thru 03 mar in area bound by 38-29.51N 026-16.42E, 38-29.53N…

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.