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 906/21 · Exercises2021-04-04 → 2021-04-07Hazardous operations 0500Z to 1200Z daily 05 and 06, 070500Z to 070530Z apr in area bound by 35-36N 024-07E,…
- HYDROLANT 878/21 · Exercises2021-03-31 → 2021-04-01Hazardous operations 0500Z to 1100Z daily 31 mar and 01 apr in area bound by 39-48.40N 025-09.75E, 39-48.33N…
- HYDROLANT 877/21 · Exercises2021-03-31 → 2021-04-01Hazardous operations 0600Z to 1100Z daily 31 mar and 01 apr in area bound by 38-55N 026-34E, 38-55N 026-28E,…
- HYDROLANT 864/21 · Exercises2021-03-29 → 2021-03-31Hazardous operations 310500Z to 310900Z mar in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
- HYDROLANT 820/21 · Exercises2021-03-24 → 2021-04-29Hazardous operations 240600Z to 241300Z mar, 260700Z to 261200Z MAR,0500Z to 1200Z daily 29 mar thru 01 apr,…
- HYDROLANT 801/21 · Surveys2021-03-22 → 2021-04-16Survey operations 23 mar thru 15 apr by M/V tubitak marmara and M/V tubitak mam in area bound by 40-03.20N…
- HYDROLANT 799/21 · Exercises2021-03-22 → 2021-03-23Hazardous operations 230800Z to 231600Z mar in area bound by 37-50.0N 023-10.0E, 37-56.5N 023-10.0E,…
- HYDROLANT 777/21 · Exercises2021-03-19 → 2021-03-22Hazardous operations 221000Z to 221600Z mar in area bound by 36-05N 023-45E, 36-15N 023-45E, 36-15N 024-00E,…
- HYDROLANT 759/21 · Exercises2021-03-17 → 2021-03-19Hazardous operations 181500Z to 190400Z mar in area bound by 37-12N 023-05E, 37-12N 023-20E, 36-55N 023-20E,…
- HYDROLANT 738/21 · Exercises2021-03-15 → 2021-03-17Hazardous operations 170600Z to 171000Z mar in area bound by 39-25.17N 025-55.03E, 39-00.00N 025-18.00E,…
- HYDROLANT 734/21 · Surveys2021-03-15 → 2021-03-18Underwater operations 16 and 17 mar by M/V ievoli ivory along trackline joining 36-12.4N 024-19.9E, 36-01.0N…
- HYDROLANT 693/21 · Surveys2021-03-10 → 2021-03-13Underwater operations by M/V ievoli ivory: a. 11 mar along trackline joining 36-44.60N 024-08.00E, 36-15.10N…
- HYDROLANT 690/21 · Exercises2021-03-10 → 2021-03-11Hazardous operations 111000Z to 111600Z mar in area bound by 36-05N 023-45E, 36-15N 023-45E, 36-15N 024-00E,…
- HYDROLANT 672/21 · Surveys2021-03-08 → 2021-03-09Underwater operations by M/V ievoli ivory: a. 08 mar along trackline joining 36-37.1N 024-14.1E 36-50.5N…
- HYDROLANT 665/21 · Exercises2021-03-07 → 2021-03-11Hazardous operations: a. 102000Z to 110300Z mar in area bound by 37-47.00N 023-17.00E, 37-44.00N 023-22.00E,…
- HYDROLANT 658/21 · Exercises2021-03-06 → 2021-03-09Hazardous operations 081600Z to 090500Z mar in area bound by 37-12N 023-05E, 37-12N 023-20E, 36-55N 023-20E,…
- HYDROLANT 657/21 · Exercises2021-03-06 → 2021-03-10Hazardous operations 0600Z to sunset 08 and 09 mar in area bound by 35-36N 024-07E, 36-18N 024-07E, 36-18N…
- HYDROLANT 656/21 · Exercises2021-03-06 → 2021-03-24Hazardous operations 0600Z to 1300Z daily 08 thru 10, 16 thru 18, 22 thru 24 mar and 0500Z to 1200Z daily 29…
- USGS-US7000DF40 · Quakes2021-03-03 → 2021-03-069 km w of týrnavos, greece
- HYDROLANT 502/21 · Exercises2021-02-21 → 2021-02-24Gunnery exercises 231600Z to 240500Z, 241600Z to 242159Z feb in area bound by 36-55N 023-05E, 37-12N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.