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 3673/19 · Exercises2019-11-29 → 2019-12-03Gunnery exercises 031001Z to 031200Z dec in area bound by 39-30N 025-33E, 39-40N 25-33E, 39-40N 025-20E,…
- HYDROLANT 3643/19 · Exercises2019-11-27 → 2019-12-03Hazardous operations 0600Z to 1000Z daily 28 nov and 04 dec in area bound by 38-50N 025-00E, 38-30N 025-00E,…
- HYDROLANT 3642/19 · Exercises2019-11-27 → 2019-11-28Hazardous operations 280600Z to 281000Z nov in area bound by 40-30.00N 025-53.00E, 40-35.00N 024-58.00E,…
- HYDROLANT 3626/19 · Exercises2019-11-26 → 2019-11-27Hazardous operations 261700Z to 261730 and 270800Z to 270830Z nov in area bound by 36-26N 023-09E, 36-26N…
- HYDROLANT 3622/19 · Exercises2019-11-26 → 2019-11-26Hazardous operations 261600Z to 261700Z nov in area bound by 36-29.3N 024-36.0E, 36-29.0N 024-28.3E,…
- HYDROLANT 3620/19 · Exercises2019-11-26 → 2019-11-26Hazardous operations 261600Z to 261700Z nov in area bound by 36-29.0N 024-38.3E, 36-29.3N 024-36.0E,…
- HYDROLANT 3619/19 · Exercises2019-11-26 → 2019-11-26Hazardous operations 261100Z to 261200Z nov in area within four miles of 35-24N 024-19E
- HYDROLANT 3618/19 · Exercises2019-11-26 → 2019-11-26Hazardous operations 261100Z to 261200Z nov in area bound by 35-50N 023-25E, 35-50N 023-40E, 35-40N 023-40E,…
- HYDROLANT 3615/19 · Exercises2019-11-25 → 2019-11-26Hazardous operations 261100Z to 261200Z nov in area bound by 36-05N 023-45E, 36-15N 023-45E, 36-15N 024-00E,…
- HYDROLANT 3613/19 · Exercises2019-11-25 → 2019-11-26Hazardous operations 260900Z to 261100Z and 261400Z to 261600Z nov in area bound by 36-05N 023-45E, 36-15N…
- HYDROLANT 3612/19 · Exercises2019-11-25 → 2019-11-27Hazardous operations 0600Z to 1330Z and 1530Z to 2000Z daily 26 and 27 nov in area bound by 37-39.30N…
- HYDROLANT 3581/19 · Surveys2019-11-22 → 2019-11-26Underwater operations in progress until further notice by M/V ocean link in area bound by 36-32N 025-20E,…
- HYDROLANT 3579/19 · Missiles2019-11-22 → 2019-11-29Gunnery and missile operations 26 thru 28 nov in area bound by 35-36N 024-07E, 36-18N 024-07E, 36-18N…
- HYDROLANT 3566/19 · Exercises2019-11-22 → 2019-11-27Hazardous operations 0600Z to 1000Z daily 26 and 27 nov in area bound by 38-09.38N 026-12.48E, 38-00.00N…
- HYDROLANT 3558/19 · Cable ops2019-11-21 → 2020-04-24Cable operations in progress until further notice along trackline joining 37-44.24N 024-04.31E, 37-44.08N…
- HYDROLANT 3462/19 · Exercises2019-11-11 → 2019-11-15Gunnery exercises 151000Z to 151200Z nov in area bound by 37-45.50N 025-58.00E, 37-56.00N 026-37.67E,…
- HYDROLANT 3455/19 · Missiles2019-11-09 → 2019-11-16Missile and gunnery operations sunrise to sunset daily 13 thru 15 nov in area bound by 35-36N 024-07E,…
- HYDROLANT 3423/19 · Exercises2019-11-06 → 2019-11-08Hazardous operations 080600Z to 081000Z nov in area bound by 38-09.38N 026-12.48E, 38-00.00N 025-45.00E,…
- HYDROLANT 3397/19 · Exercises2019-11-04 → 2019-11-07Hazardous operations 70600Z to 071000Z nov in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
- HYDROLANT 3392/19 · Exercises2019-11-04 → 2019-11-07Hazardous operations 0600Z to 1600Z daily 05, 06, and 07 nov in area bound by 40-51.3N 025-28.2E, 40-51.3N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.