Tyrrhenian Sea
IHO sea area 28e · 9° to 16° E, 38° to 44° N
- in force
- 0
- last 12 months
- 4
- archive messages
- 862
- categories
- 16
What the archive shows
862 messages are recorded since 1997-01-20 for the Tyrrhenian 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.
Nav aids accounts for 219 of 862 recorded messages (25%), 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.
In force now · 0
Nothing in force in this sea right now.
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
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
By category · available archive
| Nav aids | 219 | 25% |
| Exercises | 182 | 21% |
| Surveys | 111 | 13% |
| Incidents | 108 | 13% |
| Ordnance | 57 | 7% |
| Cable ops | 51 | 6% |
| Other | 46 | 5% |
| Derelicts | 34 | 4% |
| Containers | 16 | 2% |
| Wrecks | 11 | 1% |
| Quakes | 9 | 1% |
| Debris | 8 | 1% |
| Towing | 6 | 1% |
| Restricted | 2 | 0% |
| Missiles | 1 | 0% |
| Spills | 1 | 0% |
Archive · 862 cancelled
- HYDROLANT 2179/01 · Incidents2001-08-07 → 2001-09-21Orange lifeboat, one person on board, adrift vicinity 39-58N 011-46E
- HYDROLANT 2175/01 · Incidents2001-08-06 → 2001-09-2114 meter vessel, white hull, three persons on board, sinking in 40-58N 010-53E
- HYDROLANT 2169/01 · Nav aids2001-08-05 → 2001-08-07Monte poro light 42-43.6N 010-14.2E unlit
- HYDROLANT 2098/01 · Nav aids2001-07-26 → 2001-07-27Capo peloro light 38-16.1N 015-39.1E changed to: fl g 2 sec
- HYDROLANT 2040/01 · Ordnance2001-07-20 → 2001-07-24Underwater ordnance detonations 23 jul within 4000 meters of 41-17.2N 009-30.6E
- HYDROLANT 1947/01 · Surveys2001-07-10 → 2001-07-28Scientific research operations 12 thru 27 jul by M/V manning in areas bound by: a. 44-01-54N 009-57-36E,…
- HYDROLANT 1851/01 · Ordnance2001-06-29 → 2001-07-03Underwater ordnance detonations 02 jul within 4000 meters of 41-17.4N 009-30.1E
- HYDROLANT 1758/01 · Ordnance2001-06-18 → 2001-06-21Underwater ordnance detonations 19 jun, alternate 20 jun within 4000 meters of 41-17.4N 009-30.1E
- HYDROLANT 1740/01 · Surveys2001-06-16 → 2001-06-20Survey operations 17 thru 19 jun by M/V jean charcot vicinity of trackline joining 41-53.00N 009-32.00E,…
- HYDROLANT 1739/01 · Surveys2001-06-15 → 2001-06-16Survey operations 17 thru 19 jun by M/V jean charcot in area bound by 41-53.00N 009-32.00E, 41-50.44N…
- HYDROLANT 1708/01 · Other2001-06-12 → 2001-06-26Geophysical survey 13 jun thru 20 aug by M/V medma along trackline joining 41-43N 012-18E, 41-42N 012-17E,…
- HYDROLANT 1663/01 · Ordnance2001-06-08 → 2001-06-13Underwater ordnance detonations 0600Z to 1600Z daily 11 thru 13 jun within one mile of 43-59-00N 009-55-30E
- HYDROLANT 1556/01 · Exercises2001-05-29 → 2001-06-20Gunnery exercises 0700Z to 1530Z daily 01, 04 thru 08, 11 thru 15 and 18 thru 20 jun in areas bound by: a.…
- HYDROLANT 1503/01 · Incidents2001-05-24 → 2001-07-06Distress signal received in 41-05.9N 011-17.3E and 40-53.1N 010-54.4E
- HYDROLANT 1502/01 · Exercises2001-05-24 → 2001-05-29Gunnery exercises 291200Z to 291300Z may within 30 miles of 41-13N 011-06E
- HYDROLANT 1492/01 · Nav aids2001-05-24 → 2001-07-04RACON at eceuil lavezzi light 41-19.0N 009-15.3E off air
- HYDROLANT 1460/01 · Other2001-05-20 → 2001-05-25Geophysical operations 21 may thru 20 aug by M/V medma along trackline joining 41-43N 012-18E, 41-42N…
- HYDROLANT 1426/01 · Ordnance2001-05-16 → 2001-05-18Underwater ordnance detonations 180600Z to 181600Z may within one mile of 43-59.0N 009-55.5E
- HYDROLANT 1370/01 · Ordnance2001-05-11 → 2001-05-17Underwater ordnance detonations 0600Z to 1600Z daily 15 thru 17 may within one mile of 43-59-00N 009-55-30E
- HYDROLANT 1363/01 · Surveys2001-05-10 → 2001-05-16Survey operations in progress until 15 may by M/V jean charcot in area bound by 41-53.00N 009-32.00E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.