Mediterranean Sea - Western Basin
IHO sea area 28A · -2° to 12° E, 36° to 44° N
- in force
- 2
- last 12 months
- 2
- since 1998
- 1,204
- categories
- 11
In force now · 2
- NAVAREA III 100/26 · Towing2026-06-27Towed target shooting exercise in western Mediterranean Sea on October 29 or 30, 2026, within a defined area; canceled by October 31.
- HYDROLANT 1235/26 · Exercises2026-06-25Hazardous operations are taking place in the western Mediterranean Sea off Spain from 29 to 30 October, until cancelled on 31 October.
Longest in force
- HYDROLANT 1235/26 · Exercises2026-06-25Hazardous operations are taking place in the western Mediterranean Sea off Spain from 29 to 30 October, until cancelled on 31 October.
- NAVAREA III 100/26 · Towing2026-06-27Towed target shooting exercise in western Mediterranean Sea on October 29 or 30, 2026, within a defined area; canceled by October 31.
By year
98
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00
01
02
03
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05
06
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08
09
10
11
12
13
14
15
16
17
18
19
20
21
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26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
By category · since 1997
| Exercises | 387 | 32% |
| Nav aids | 261 | 22% |
| Surveys | 194 | 16% |
| Cable ops | 161 | 13% |
| Derelicts | 85 | 7% |
| Other | 59 | 5% |
| Containers | 26 | 2% |
| Debris | 15 | 1% |
| Wrecks | 11 | 1% |
| Missiles | 4 | 0% |
| Towing | 1 | 0% |
Archive · 1,202 cancelled
- HYDROLANT 616/21 · Exercises2021-03-03 → 2021-03-16Cancel this msg 030001Z apr 21
- HYDROLANT 577/21 · Cable ops2021-02-27 → 2021-03-09Cable operations 03 thru 08 mar by cableship pierre de fermat in areas within 3 miles of: a. 38-27.8N…
- HYDROLANT 558/21 · Exercises2021-02-26 → 2021-03-06Hazardous operations 0800Z to 1700Z daily 01 thru 03, 05, 09, 11 and 12 mar in area bound by 38-57-00N…
- HYDROLANT 539/21 · Surveys2021-02-24 → 2021-03-10Survey operations 28 feb thru 09 mar by M/V thetys II and M/V l'europe in area bound by 43-19.98N…
- HYDROLANT 532/21 · Nav aids2021-02-24 → 2021-02-25Valencia NAVTEX station off air
- HYDROLANT 525/21 · Nav aids2021-02-24 → 2021-02-24Valencia NAVTEX station off air
- HYDROLANT 491/21 · Other2021-02-20 → 2021-02-24Bombing exercises 1300Z to 1600Z 23 and 24 feb in area bound by 42-10.0N 006-40.0E, 42-10.0N 007-46.5E,…
- HYDROLANT 483/21 · Debris2021-02-19 → 2021-02-22Buoy adrift in vicinity 37-14N 010-34E
- HYDROLANT 481/21 · Derelicts2021-02-19 → 2021-02-22Derelict vessel, gray and white hull adrift in 36-22.5N 001-01.5W at 191010Z feb
- HYDROLANT 464/21 · Exercises2021-02-17 → 2021-02-22Hazardous operations 0700Z to 1600Z daily 21 and 22 feb in area bound by 42-10.0N 006-40.0E, 42-10.0N…
- HYDROLANT 463/21 · Exercises2021-02-17 → 2021-02-21Corsica DNC 08
- HYDROLANT 448/21 · Exercises2021-02-16 → 2021-02-20Hazardous operations 170001Z to 192359Z feb in areas bound by: a. 36-55.43N 007-05.32E, 37-16.38N…
- HYDROLANT 409/21 · Exercises2021-02-11 → 2021-02-11Hazardous operations 140700Z to 141600Z feb in area bound by 42-10N 006-40E, 42-10N 008-00E, 41-34N 008-00E,…
- HYDROLANT 392/21 · Surveys2021-02-09 → 2021-02-22Survey operations 12 thru 21 feb by M/V thetys II and M/V l'europe in area bound by 43-19.98N 007-48.96E,…
- HYDROLANT 383/21 · Exercises2021-02-09 → 2021-02-11Hazardous operations 111600Z thru 111800Z feb in area bound by 42-10.0N 006-40.0E, 42-10.0N 007-46.5E…
- HYDROLANT 324/21 · Exercises2021-02-04 → 2021-03-04Cancel this msg 041730Z mar 21
- HYDROLANT 259/21 · Surveys2021-01-28 → 2021-02-08Underwater operations 010001Z to 072359Z feb by M/V tethys II in area bound by 41-40N 006-00E, 41-40N…
- HYDROLANT 242/21 · Nav aids2021-01-26 → 2021-02-27Galiton de l'ouest light 37-29.9N 008-52.5E unreliable
- HYDROLANT 122/21 · Surveys2021-01-13 → 2021-02-01Underwater operations 150001Z to 312359Z jan by M/V tethys II in area bound by 41-40.0N 006-00.0E, 41-40.0N…
- HYDROLANT 105/21 · Exercises2021-01-12 → 2021-01-14Hazardous operations 131200Z to 131759Z and 140700Z to 141759Z jan in area bound by 42-10.0N 006-40.0E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.