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 549/20 · Exercises2020-02-15 → 2020-02-28
    Hazardous operations 170001Z to 272359Z feb in area within four miles of 37-27N 026-57E
  2. HYDROLANT 498/20 · Exercises2020-02-11 → 2020-02-12
    Gunnery exercises 120500Z to 120700Z feb in area bound by 38-50N 025-14E, 38-50N 025-33E, 39-10N 025-41E,…
  3. HYDROLANT 493/20 · Surveys2020-02-11 → 2020-03-08
    Underwater operations 121000Z feb to 082200Z mar in area bound by 40-34.67N 024-22.77E, 40-09.17N…
  4. HYDROLANT 481/20 · Exercises2020-02-11 → 2020-02-12
    Hazardous operations 121300Z to 121500Z feb in area bound by 36-56N 023-29E, 36-42N 023-32E, 36-41N 023-48E,…
  5. HYDROLANT 448/20 · Exercises2020-02-09 → 2020-02-12
    Torpedo exercises 111600Z to 120400Z feb in area bound by 37-12N 023-20E, 37-12N 023-05E, 36-55N 023-05E,…
  6. HYDROLANT 447/20 · Exercises2020-02-09 → 2020-02-12
    Hazardous operations 0600Z to 1400Z daily 11 and 12 feb in area bound by 35-32N 024-28E, 35-32N 024-38E,…
  7. HYDROLANT 430/20 · Exercises2020-02-07 → 2020-02-11
    Hazardous operations 111300Z to 111530Z feb in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
  8. HYDROLANT 398/20 · Exercises2020-02-05 → 2020-02-27
    Hazardous operations 0600Z to 1000Z daily 07, 17, 24 and 27 feb in area bound by 38-50N 025-00E, 38-30N…
  9. HYDROLANT 381/20 · Exercises2020-02-03 → 2020-02-12
    Hazardous operations 0600Z to 1000Z daily 06 and 12 feb in area bound by 40-26.45N 025-55.03E, 40-23.00N…
  10. HYDROLANT 378/20 · Exercises2020-02-03 → 2020-02-14
    Hazardous operations 0600Z to 1000Z daily 05 and 14 feb in area bound by 36-25N 026-30E, 36-30N 026-58E,…
  11. HYDROLANT 377/20 · Exercises2020-02-03 → 2020-02-12
    Hazardous operations 06 and 12 feb in area bound by 40-26.45N 025-55.03E, 40-23.00N 025-54.00E, 40-35.00N…
  12. HYDROLANT 374/20 · Exercises2020-02-03 → 2020-02-09
    Hazardous operations 041201Z to 082359Z feb in area bound by 38-26N 024-30E, 39-08N 023-19E, 39-51N 024-03E,…
  13. HYDROLANT 365/20 · Exercises2020-02-02 → 2020-02-06
    Hazardous operations 061001Z thru 061100Z feb in area bound by 38-56N 025-25E, 39-04N 025-42E, 39-15N…
  14. HYDROLANT 347/20 · Exercises2020-01-31 → 2020-02-04
    Hazardous operations 040600Z to 041000Z in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
  15. HYDROLANT 346/20 · Exercises2020-01-31 → 2020-02-24
    Hazardous operations 0600Z to 1000Z daily 04, 13 and 24 feb in area bound by 38-09.38N 026-12.48E, 38-00.00N…
  16. HYDROLANT 345/20 · Exercises2020-01-31 → 2020-02-28
    Hazardous operations 0600Z to 1000Z daily 03, 20 and 28 feb in area bound by 39-25.17N 025-55.03E, 39-00.00N…
  17. HYDROLANT 323/20 · Exercises2020-01-29 → 2020-01-31
    Gunnery exercises 301600Z to 310300Z jan in area bound by 36-55N 023-05E, 36-55N 023-20E, 37-12N 023-20E,…
  18. HYDROLANT 294/20 · Exercises2020-01-27 → 2020-02-27
    Hazardous operations 0600Z to 1500Z daily 28 and 29, 0600Z to 1300Z daily 30 jan, 03 thru 06, 10 thru 13, 17…
  19. HYDROLANT 289/20 · Exercises2020-01-27 → 2020-01-31
    Hazardous operations 1700Z to 0400Z commencing daily 28 thru 30 jan in area bound by 36-55N 023-05E, 36-55N…
  20. HYDROLANT 285/20 · Exercises2020-01-27 → 2020-02-13
    Hazardous operations 0600Z to 1000Z daily 29 jan, 03, 07 and 13 feb in area bound by 40-30N 025-53E, 40-35N…

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