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 922/20 · Exercises2020-03-10 → 2020-03-11Hazardous operations 110600Z to 111000Z mar in area bound by 37-24.0N 026-00.0E, 37-31.0N 026-21.0E,…
- HYDROLANT 917/20 · Exercises2020-03-09 → 2020-03-12Hazardous operations 120600Z to 121000Z mar in area bound by 39-00.00N 025-18.00E, 38-54.00N 024-52.00E,…
- HYDROLANT 909/20 · Exercises2020-03-09 → 2020-03-16Hazardous operations 0400Z to 1200Z daily 15 and 16 mar in area bound by 38-16.0N 026-16.0E, 38-04.0N…
- HYDROLANT 896/20 · Exercises2020-03-08 → 2020-03-12Hazardous operations 101100Z to 101500Z and 111900Z to 120800Z mar in area bound by 37-50.0N 023-10.0E,…
- HYDROLANT 895/20 · Exercises2020-03-08 → 2020-03-12Torpedo exercises 101900Z to 110800Z and 111900Z to 120800Z mar in area bound by 36-55N 023-05E, 37-12N…
- HYDROLANT 886/20 · Exercises2020-03-07 → 2020-03-10Hazardous operations 100600Z to 101000Z mar in area bound by 38-09.38N 026-12.48E, 38-00.00N 025-45.00E,…
- HYDROLANT 882/20 · Exercises2020-03-06 → 2020-03-10Hazardous operations 100600Z to 101000Z mar in area bound by 38-09.38N 026-12.48E, 38-00.00N 025-00.00E,…
- HYDROLANT 877/20 · Exercises2020-03-06 → 2020-03-12Hazardous operations 0300Z to 1100Z daily 11 and 12 mar in area bound by 38-58.0N 026-48.0E, 38-51.0N…
- HYDROLANT 872/20 · Exercises2020-03-06 → 2020-03-10Hazardous operations in progress until 101100Z mar in area bound by 38-09.38N 026-12.48E, 38-00.00N…
- HYDROLANT 871/20 · Exercises2020-03-06 → 2020-03-09Hazardous operations 090600Z to 091000Z mar in area bound by 38-50N 025-00E, 38-30N 025-00E, 38-30N 025-45E,…
- HYDROLANT 859/20 · Exercises2020-03-05 → 2020-03-06Hazardous operations 061300Z to 061600Z mar in area bound by 38-29.41N 026-17.15E, 38-29.28N 026-17.16E,…
- HYDROLANT 858/20 · Exercises2020-03-05 → 2020-03-06Hazardous operations 060600Z to 061000Z mar in area bound by 38-31.03N 026-16.12E, 38-30.55N 026-16.33E,…
- HYDROLANT 856/20 · Exercises2020-03-05 → 2020-03-06Hazardous operations 0300Z to 0430Z, 0800Z to 1000Z, 1300Z to 1500Z and 1800Z to 1930Z daily 05 and 06 mar…
- HYDROLANT 854/20 · Exercises2020-03-05 → 2020-03-06Hazardous operations 0300Z to 0430Z, 0800Z to 1000Z, 1300Z to 1500Z and 1800Z to 1930Z daily 05 and 06 mar…
- HYDROLANT 853/20 · Exercises2020-03-05 → 2020-03-06Hazardous operations 0300Z to 0430Z, 0800Z to 1000Z, 1300Z to 1500Z and 1800Z to 1930Z daily 05 and 06 mar…
- HYDROLANT 852/20 · Exercises2020-03-05 → 2020-03-06Hazardous operations 0900Z to 1100Z and 1800Z to 2000Z daily 05 and 06 mar in area bound by 37-52.13N…
- HYDROLANT 845/20 · Exercises2020-03-04 → 2020-03-06Hazardous operations 041800Z to 041930Z, 0800Z to 1000Z, 1300Z to 1500Z and 1800Z to 1930Z daily 05 and 06…
- HYDROLANT 844/20 · Exercises2020-03-04 → 2020-03-06Hazardous operations 0600Z to 1600Z daily 05 and 06 mar in area bound by 36-34.02N 027-50.92E, 36-35.98N…
- HYDROLANT 842/20 · Exercises2020-03-04 → 2020-03-06Hazardous operations 0800Z to 1000Z and 1700Z to 1900Z daily 05 and 06 mar in area bound by 37-49.25N…
- HYDROLANT 841/20 · Exercises2020-03-04 → 2020-03-05Hazardous operations 050800Z to 051000Z and 051700Z to 051900Z mar in area bound by 37-35-11N 026-55-55E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.