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.
- An older warning still listed in force · issued 2026-02-03 17:37ZHazardous operations take place daily in the Aegean Sea until 14 June and from 16 September to 31 December, in a defined area.
In force now · 3
- HYDROLANT 237/26 · Missiles2026-02-03Missile operations occur daily Wednesday through Saturday in the Aegean Sea until June 14 and September 16 through December 31.
- HYDROLANT 238/26 · Exercises2026-02-03Hazardous 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.
- HYDROLANT 236/26 · Exercises2026-02-03Hazardous 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
- HYDROLANT 236/26 · Exercises2026-02-03Hazardous operations take place daily in the Aegean Sea until 14 June and from 16 September to 31 December, in a defined area.
- HYDROLANT 238/26 · Exercises2026-02-03Hazardous 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.
- HYDROLANT 237/26 · Missiles2026-02-03Missile 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
| Exercises | 1,129 | 76% |
| Surveys | 143 | 10% |
| Cable ops | 87 | 6% |
| Missiles | 49 | 3% |
| Quakes | 33 | 2% |
| Incidents | 22 | 1% |
| Nav aids | 12 | 1% |
| Other | 7 | 0% |
| Ordnance | 6 | 0% |
| Debris | 2 | 0% |
| Mines | 2 | 0% |
Archive · 1,489 cancelled
- HYDROLANT 3253/20 · Cable ops2020-10-25 → 2020-11-06Cable operations 26 oct until further notice by cableship giulo verne in vicinity of trackline joining…
- HYDROLANT 3246/20 · Cable ops2020-10-25 → 2020-10-28Cable operations in progress until 28 oct by M/V urbano monti along tracklines joining: a. 37-27.2N…
- HYDROLANT 3233/20 · Exercises2020-10-24 → 2020-10-27Hazardous operations 270600Z to 271300Z oct in area bound by 35-36N 024-07E, 36-18N 024-07E, 36-18N 024-47E,…
- HYDROLANT 3199/20 · Exercises2020-10-22 → 2020-10-23Hazardous operations 230500Z to 230900Z oct in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
- HYDROLANT 3198/20 · Exercises2020-10-22 → 2020-10-22Hazardous operations 220500Z to 220900Z in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
- HYDROLANT 3188/20 · Exercises2020-10-21 → 2020-10-26Hazardous operations 0600Z to 1300Z daily 26 and 27 oct and 280500Z to 280900Z oct in area bound by 38-45N…
- HYDROLANT 3179/20 · Exercises2020-10-20 → 2020-10-23Hazardous operations 0600Z to 0900Z daily 22 and 23 oct in area bound by 39-29.95N 025-00.83E, 39-23.95N…
- HYDROLANT 3154/20 · Exercises2020-10-17 → 2020-10-19Hazardous operations 190800Z to 191500Z oct in area bound by 35-36N 024-07E, 36-18N 024-07E, 36-18N 024-47E,…
- HYDROLANT 3142/20 · Cable ops2020-10-16 → 2020-11-03Cable operations 17 oct until further notice by M/V isaac newton in vicinity of trackline joining 35-30.90N…
- HYDROLANT 3066/20 · Exercises2020-10-09 → 2020-10-13Hazardous operations 0600Z to 1100Z daily 12 and 13 oct in area bound by 38-59N 026-28E, 38-59N 026-34E,…
- HYDROLANT 2968/20 · Exercises2020-09-30 → 2020-10-29Hazardous operations 0500Z to 1200Z daily 30 sep and 01 oct, 0500Z to 1200Z daily 05 thru 08, 12 thru 15…
- HYDROLANT 2954/20 · Surveys2020-09-29 → 2020-10-07Survey operations 01 oct until further notice by M/V aigaio in area bound by 36-04.85N 027-37.91E, 36-11.60N…
- HYDROLANT 2917/20 · Exercises2020-09-25 → 2020-09-27Hazardous operations 270530Z to 270900Z sep in area bound by 37-34.83N 026-27.18E, 37-36.26N 026-27.53E,…
- HYDROLANT 2903/20 · Surveys2020-09-24 → 2020-09-30Underwater operations by M/V aigaio: a. 25 sep in area bound by 37-36.88N 023-43.37E, 37-27.28N 023-47.33E,…
- HYDROLANT 2882/20 · Exercises2020-09-22 → 2020-09-25Hazardous operations 1700Z to 0200Z daily 23 and 24 sep in area bound by 36-55N 023-05E, 36-55N 023-35E,…
- HYDROLANT 2863/20 · Exercises2020-09-19 → 2020-09-20Hazardous operations 0600Z to 0730Z daily 19 and 20 sep in area bound by 38-51N 026-19E, 38-55N 026-05E,…
- HYDROLANT 2862/20 · Exercises2020-09-19 → 2020-09-20Hazardous operations 0300Z to 0830Z daily 19 and 20 sep in area bound by 38-39.97N 026-44.10E, 38-41.93N…
- HYDROLANT 2857/20 · Exercises2020-09-18 → 2020-09-30Hazardous operations 0500Z to 1200Z daily 21 thru 24 sep, 0500Z to 0620Z, 0840Z to 1020Z daily 28 sep thru…
- HYDROLANT 2852/20 · Exercises2020-09-18 → 2020-09-21Hazardous operations 211200Z to 211500Z sep in area bound by 36-56N 023-29E, 36-42N 023-32E, 36-41N 023-48E,…
- HYDROLANT 2837/20 · Surveys2020-09-17 → 2020-10-30Survey operations 22 sep thru 29 oct by M/V tubitak marmara and M/V tubitak mam in area bound by 40-03.20N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.