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 1701/20 · Exercises2020-05-20 → 2020-05-22Hazardous operations 201100Z to 201400Z and 220600Z to 221000Z may in area bound by 37-00N 023-00E, 37-10N…
- HYDROLANT 1688/20 · Exercises2020-05-18 → 2020-05-22Hazardous operations 0500Z to 1600Z daily 20 thru 22 may in area bound by 37-24.0N 026-00.0E, 37-24.0N…
- HYDROLANT 1629/20 · Exercises2020-05-13 → 2020-05-22Hazardous operations 180500Z to 181600Z and 0500Z to 1600Z daily 20 thru 22 may in area bound by 39-14N…
- HYDROLANT 1628/20 · Exercises2020-05-13 → 2020-05-22Hazardous operations 180500Z to 181600Z and 0500Z to 1600Z daily 20 thru 22 may in area bound by 40-35.0N…
- HYDROLANT 1613/20 · Exercises2020-05-12 → 2020-05-14Hazardous operations 140500Z to 140900Z may in area bound by 36-25N 026-30E, 36-30N 026-58E, 36-13N 027-29E,…
- HYDROLANT 1611/20 · Exercises2020-05-12 → 2020-05-15Torpedo operations 1700Z to 0300Z commencing daily 13 and 14 may in area bound by 36-55N 023-05E, 37-12N…
- HYDROLANT 1610/20 · Exercises2020-05-12 → 2020-05-14Hazardous operations 140500Z to 140900Z may in area bound by 40-30.00N 025-53.00E, 40-35.00N 024-58.00E,…
- HYDROLANT 1591/20 · Exercises2020-05-10 → 2020-05-28Hazardous operations 0400Z to 2059Z daily 12, 14, 19, 21, 26 and 28 may in area bound by 38-22.33N…
- HYDROLANT 1572/20 · Exercises2020-05-08 → 2020-05-15Hazardous operations 130500Z to 131329Z, 131431Z to 131600Z and 1031Z to 1600Z daily 14 and 15 may in area…
- HYDROLANT 1544/20 · Exercises2020-05-06 → 2020-05-15Hazardous operations 0500Z to 0900Z daily 08 and 15 may in area bound by 39-00.0N 025-18.0E, 38-54.0N…
- HYDROLANT 1532/20 · Exercises2020-05-04 → 2020-05-06Hazardous operations 0600Z to 1100Z daily 05 and 06 may in area bound by 38-55.17N 026-28.00E, 38-55.00N…
- HYDROLANT 1531/20 · Cable ops2020-05-04 → 2020-05-21Cable operations in progress until further notice by M/V polar king along tracklines joining: a. 37-47.20N…
- HYDROLANT 1528/20 · Exercises2020-05-04 → 2020-05-07Hazardous operations 070500Z to 070900Z may in area bound by 37-24.0N 026-00.0E, 37-31.0N 026-21.0E,…
- HYDROLANT 1511/20 · Exercises2020-05-03 → 2020-05-25Hazardous operations 0500Z to 1200Z daily 04 thru 07, 11 thru 14, 18 thru 21, 25 thru 28 may, 01 thru 04, 09…
- HYDROLANT 1502/20 · Exercises2020-05-02 → 2020-05-20Hazardous operations 0500Z to 0900Z daily 06 and 20 may in area bound by 38-50N 025-00E, 38-30N 025-00E,…
- HYDROLANT 1480/20 · Exercises2020-04-30 → 2020-05-15Hazardous operations 0500Z to 1600Z daily 04 thru 08, 11 and 13, 1031Z to 1600Z daily 14 and 15 may in area…
- HYDROLANT 1479/20 · Exercises2020-04-30 → 2020-05-18Hazardous operations 0500Z to 1600Z daily 04 thru 08, 11, 12 and 18 may in area bound by 37-24.0N 026-00.0E,…
- HYDROLANT 1478/20 · Exercises2020-04-30 → 2020-05-12Hazardous operations 0500Z to 1600Z daily 04, 08, 11 and 12 may in area bound by 40-35.0N 024-58.0E,…
- HYDROLANT 1474/20 · Exercises2020-04-30 → 2020-05-05Hazardous operations 050500Z to 050900Z may in area bound by 39-25.17N 025-55.03E, 39-00.00N 025-18.00E,…
- HYDROLANT 1473/20 · Exercises2020-04-30 → 2020-05-04Hazardous operations 040500Z to 040900Z may in area bound by 40-26.45N 025-55.08E, 40-23.00N 025-54.00E…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.