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 1945/20 · Exercises2020-06-13 → 2020-06-30Hazardous operations 0500Z to 1400Z daily 15, 16, 17, 18, 29, and 300500Z to 301200Z jun in area bound by…
- HYDROLANT 1928/20 · Exercises2020-06-12 → 2020-06-14Hazardous operations in progress until 141100Z jun in area bound by 39-48.75N 025-22.13E, 39-46.45N…
- HYDROLANT 1918/20 · Exercises2020-06-11 → 2020-06-19Hazardous operations 0500Z to 1200Z daily 15 thru 18 jun, 29 and 30 jun in area bound by 38-45N 025-21E,…
- HYDROLANT 1897/20 · Mines2020-06-08 → 2020-06-11Mining operations in areas bound by: a. 100600Z to 101230Z jun 37-55.54N 023-23.00E, 37-56.36N 023-23.00E,…
- HYDROLANT 1896/20 · Surveys2020-06-08 → 2020-07-01Survey operations 10 thru 30 jun by M/V tubitak marmara and M/V tubitak mam in area bound by 40-03.20N…
- HYDROLANT 1889/20 · Exercises2020-06-07 → 2020-06-11Hazardous operations 0600Z to 0900Z daily 10 and 11 jun in area bound by 38-48.42N 024-40.48E, 38-51.12N…
- HYDROLANT 1888/20 · Exercises2020-06-07 → 2020-06-12Aegean sea DNC 09
- HYDROLANT 1880/20 · Missiles2020-06-06 → 2021-01-01Gunnery and missile operations 0530Z to sunset wednesday thru friday 10 jun thru 31 oct and wednesday thru…
- HYDROLANT 1828/20 · Exercises2020-06-01 → 2020-06-05Hazardous operations 0600Z to 1500Z daily 02, 03 and 04 jun and 050600Z to 051100Z jun in area bound by…
- HYDROLANT 1817/20 · Exercises2020-05-30 → 2020-06-30Hazardous operations 0400Z to 2159Z daily 02, 04, 09, 11, 16, 18, 23, 25 and 30 jun in area bound by…
- HYDROLANT 1807/20 · Exercises2020-05-29 → 2020-06-04Hazardous operations 021301Z to 030300Z, 031301Z to 040300Z and 041301Z to 041900Z jun in area bound by…
- HYDROLANT 1806/20 · Exercises2020-05-29 → 2020-05-31Hazardous operations 311215Z to 311515Z may in area bound by 37-24.25N 025-00.31E, 37-20.57N 025-00.31E,…
- HYDROLANT 1787/20 · Exercises2020-05-27 → 2020-05-28Torpedo exercises 271500Z to 280100Z may in area bound by 36-55N 023-05E, 37-12N 023-05E, 37-12N 023-20E,…
- HYDROLANT 1785/20 · Cable ops2020-05-27 → 2020-06-09Cable operations 280500Z may until further notice by M/V hydna along trackline joining 37-44.5N 024-05.0E,…
- HYDROLANT 1775/20 · Exercises2020-05-26 → 2020-12-31Hazardous operations 0500Z to 1600Z daily 27 may thru 14 jul, 16 thru 29 jul, 04 thru 28 aug, 31 aug thru 27…
- HYDROLANT 1769/20 · Exercises2020-05-25 → 2020-06-13Hazardous operations 260500Z to 261200Z, 270500Z to 271400Z, 280500Z to 281300Z may, 0500Z to 1200Z daily 01…
- HYDROLANT 1759/20 · Exercises2020-05-25 → 2020-12-31Hazardous operations 0500Z to 1600Z daily 27 may thru 14 jul, 16 thru 29 jul, 04 thru 28 aug, 31 aug thru 27…
- HYDROLANT 1756/20 · Exercises2020-05-25 → 2020-12-31Hazardous operations 0500Z to 1600Z daily 27 may thru 14 jul, 16 thru 29 jul, 04 thru 28 aug, 31 aug thru 27…
- HYDROLANT 1739/20 · Exercises2020-05-23 → 2020-05-24Hazardous operations 240530Z to 240900Z may in area bound by 37-32.57N 026-29.00E, 37-32.58N 026-31.20E,…
- HYDROLANT 1708/20 · Exercises2020-05-20 → 2020-05-22Hazardous operations 220500Z to 220900Z may in area bound by 39-25.17N 025-55.03E, 39-00.00N 025-18.00E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.