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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02
03
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05
06
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09
10
11
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15
16
17
18
19
20
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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 79/21 · Exercises2021-01-10 → 2021-01-11Hazardous operations 110900Z to 111759Z jan in area bound by 42-10.0N 006-40.0E, 42-10.0N 007-46.5E,…
- HYDROLANT 57/21 · Exercises2021-01-08 → 2021-01-12Hazardous operations 120700Z to 121659Z jan in area bound by 42-10.0N 006-40.0E, 42-10.0N 007-46.5E,…
- HYDROLANT 3896/20 · Other2020-12-17 → 2020-12-23Helicopter ditched in 36-38-02N 002-37-04E
- HYDROLANT 3833/20 · Derelicts2020-12-11 → 2020-12-14Derelict S/V adrift in 38-55.1N 005-41.7E at 110653Z dec
- HYDROLANT 3754/20 · Surveys2020-12-02 → 2020-12-16Survey operations 05 thru 15 dec by M/V tethys II in area within two miles of 43-25.2N 007-54.0E
- HYDROLANT 3701/20 · Exercises2020-11-27 → 2020-12-07Gunnery exercises 300700Z nov to 062359Z dec in area bound by 42-10.0N 006-40.0E, 42-10.0N 007-46.3E,…
- HYDROLANT 3700/20 · Exercises2020-11-27 → 2020-12-07Hazardous operations 0700Z to 1700Z daily 30 nov thru 03 dec, 050700Z to 051200Z, 070700Z to 071700Z dec in…
- HYDROLANT 3672/20 · Surveys2020-11-26 → 2020-12-21Survey operations in progress until 20 dec by M/V belkacem grine in area bound by 36-19-44N 001-28-49W,…
- HYDROLANT 3584/20 · Exercises2020-11-18 → 2020-11-21Hazardous operations 210700Z to 211600Z nov in area bound by 42-10N 006-40E, 42-10N 008-00E, 41-33N 008-00E,…
- HYDROLANT 3579/20 · Exercises2020-11-18 → 2020-11-19Hazardous operations 190001Z to 191400Z nov in area bound by 43-01N 009-07E, 42-30N 008-10E, 43-00N 007-50E,…
- HYDROLANT 3495/20 · Surveys2020-11-11 → 2020-11-24Survey operations 13 thru 23 nov by M/V tethys II in area within two miles of 43-25.2N 007-54.0E
- HYDROLANT 3476/20 · Exercises2020-11-10 → 2020-12-15Hazardous operations 120001Z nov to 142359Z dec along trackline joining 43-39N 007-18E, 43-23N 007-55E,…
- HYDROLANT 3443/20 · Exercises2020-11-07 → 2020-12-01Hazardous operations 080001Z to 302359Z nov in area bound by 43-09N 008-06E, 42-40N 008-30E, 42-23N 008-00E,…
- HYDROLANT 3418/20 · Exercises2020-11-05 → 2020-11-09Hazardous operations 091200Z to 091759Z in area bound by 42-10.0N 006-40.0E, 42-10.0N 007-46.5E, 41-38.1N…
- HYDROLANT 3318/20 · Exercises2020-10-29 → 2020-11-13Hazardous operations 0700Z to 2200Z daily 02 thru 07 and 09 thru 13 nov in area bound by 38-57.00N…
- HYDROLANT 3317/20 · Exercises2020-10-29 → 2020-12-11Cancel this msg 111730Z dec 20
- HYDROLANT 3316/20 · Surveys2020-10-29 → 2020-12-02Survey operations 01 nov thru 01 dec by M/V pourquoi pas in area bound by 43-44.95N 007-31.26E, 43-49.36N…
- HYDROLANT 3302/20 · Exercises2020-10-28 → 2020-10-30Hazardous operations 300400Z to 302000Z oct in area bound by 38-00N 009-00E, 39-05N 009-30E, 39-12N 009-18E,…
- HYDROLANT 3288/20 · Cable ops2020-10-28 → 2021-01-20Cable operations in progress until 19 jan 21 by M/V ise douessant in area bound by 37-43.1N 010-41.2E,…
- HYDROLANT 3208/20 · Nav aids2020-10-22 → 2020-10-28Capo caccia light 40-33.6N 008-09.8E 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.