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 3910/19 · Exercises2019-12-20 → 2019-12-23Hazardous operations 230600Z to 231000Z dec in area bound by 40-30N 025-53E, 40-35N 024-58E, 40-10N 024-25E,…
- HYDROLANT 3894/19 · Exercises2019-12-19 → 2019-12-23Gunnery exercises 231001Z to 231200Z dec in area bound by 40-10N 025-13E, 40-10N 025-25E, 40-20N 025-25E,…
- HYDROLANT 3878/19 · Exercises2019-12-17 → 2019-12-18Gunnery exercise 181000Z to 181100Z dec in area bound by 38-56N 025-25E, 39-04N 025-42E, 39-15N 025-38E,…
- HYDROLANT 3859/19 · Exercises2019-12-16 → 2019-12-20Hazardous operations 1200Z to 1500Z daily 17 thru 20 dec in area bound by 35-28.0N 024-22.0E, 35-36.0N…
- HYDROLANT 3855/19 · Exercises2019-12-16 → 2019-12-19Gunnery exercises 0400Z to 0800Z daily 18 and 19 dec in area bound by 37-27N 026-17E, 37-08N 026-27E, 37-05N…
- HYDROLANT 3821/19 · Exercises2019-12-13 → 2019-12-17Gunnery exercises 171100Z to 171300Z dec in area bound by 39-11N 025-23E, 39-21N 025-23E, 39-21N 025-36E,…
- HYDROLANT 3803/19 · Exercises2019-12-11 → 2019-12-13Hazardous operations 130900Z to 131300Z dec in area bound by: 36-56N 023-29E, 36-47N 023-55E, 36-41N…
- HYDROLANT 3794/19 · Exercises2019-12-10 → 2019-12-12Hazardous operations 0600Z to 1500Z daily 11 and 12 dec in area bound by: 38-31.61N 025-50.48E, 38-28.68N…
- HYDROLANT 3793/19 · Exercises2019-12-10 → 2019-12-12Hazardous operations 0700Z to 1100Z daily 11 and 12 dec in area bound by: 39-48.75N 025-22.13E, 39-46.45N…
- HYDROLANT 3791/19 · Exercises2019-12-10 → 2019-12-11Hazardous operations 110600Z to 111000Z dec in area bound by 40-30.00N 025-53.00E, 40-35.00N 024-58.00E,…
- HYDROLANT 3790/19 · Exercises2019-12-10 → 2019-12-11Hazardous operations 111700Z to 112200Z dec in area bound by 37-12N 023-00E, 37-00N 024-10E, 36-45N 024-10E,…
- HYDROLANT 3745/19 · Exercises2019-12-06 → 2019-12-10Hazardous operations 101300Z to 101500Z dec in area bounded by 36-56N 023-29E, 36-47N 023-55E, 36-41N…
- HYDROLANT 3744/19 · Exercises2019-12-06 → 2019-12-12Hazardous operations 100700Z to 101000Z and 120700Z to 121000Z dec in area bound by 38-48.7N 024-40.8E,…
- HYDROLANT 3719/19 · Exercises2019-12-04 → 2019-12-27Hazardous operations 0600Z to 1000Z daily 05 and 27 dec in area bound by 37-24.0N 026-00.0E, 37-31.0N…
- HYDROLANT 3702/19 · Exercises2019-12-03 → 2019-12-05Hazardous operations 050600Z to 051000Z dec in area bound by 39-00.00N 025-18.00E, 38-54.00N 024-52.00E,…
- HYDROLANT 3701/19 · Exercises2019-12-03 → 2019-12-23Hazardous operations 0600Z to 1000Z daily 04, 11 and 23 dec in area bound by 38-50N 025-00E, 38-30N 025-00E,…
- HYDROLANT 3700/19 · Exercises2019-12-03 → 2019-12-27Hazardous operations 0600Z to 1000Z daily 04, 13 and 27 dec in area bound by 40-26.45N 025-55.03E, 40-23.00N…
- HYDROLANT 3681/19 · Exercises2019-11-30 → 2019-12-09Hazardous operations 0600Z to 1000Z daily 02, 03 and 09 dec in area bound by 38-09.23N 026-12.29E, 38-00.00N…
- HYDROLANT 3680/19 · Exercises2019-11-30 → 2019-12-03Hazardous operations 030600Z to 031000Z dec in area bound by 39-25.10N 025-55.02E, 39-00.00N 025-18.00E,…
- HYDROLANT 3679/19 · Nav aids2019-11-30 → 2019-12-06Akra vrisaki light 37-44N 024-05E unreliable
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.