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
By month (all years)
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% |
| Spills | 1 | 0% |
| Missiles | 1 | 0% |
Archive · 862 cancelled
- HYDROLANT 2750/01 · Ordnance2001-10-24 → 2001-11-21Unexploded ordnance vicinity 39-24.5N 009-52.0E
- HYDROLANT 2737/01 · Surveys2001-10-22 → 2001-10-25Survey operations in progress until 24 oct by M/V urania vicinity of trackline between 43-02N 009-31E and…
- HYDROLANT 2735/01 · Nav aids2001-10-22 → 2001-10-25Viareggio light 43-51.9N 010-14.0E unlit
- HYDROLANT 2693/01 · Other2001-10-17 → 2001-10-18Capo di milazzo light 38-16-14.5N 015-13-51.5E at reduced intensity
- HYDROLANT 2678/01 · Wrecks2001-10-15 → 2001-10-16Dangerous wreck in 43-58.8N 009-53.3E
- HYDROLANT 2657/01 · Ordnance2001-10-12 → 2001-10-16Underwater ordnance detonations 15 oct within 4000 meters of 40-56-24N 009-47-00E
- HYDROLANT 2642/01 · Surveys2001-10-10 → 2001-10-20Underwater operations 120600Z to 291800Z oct by M/V manning and M/V alliance towing equipment in area bound…
- HYDROLANT 2629/01 · Nav aids2001-10-09 → 2001-10-15Capo comino light 40-31.5N 009-49.7E unreliable
- HYDROLANT 2609/01 · Nav aids2001-10-06 → 2001-10-10Capo zafferano light 38-06.7N 013-32.3E unlit
- HYDROLANT 2604/01 · Other2001-10-05 → 2001-10-26Punta cala scirocco light 43-25.2N 009-54.1E temporarily reduced to three miles
- HYDROLANT 2598/01 · Nav aids2001-10-04 → 2001-10-08Isola razzoli light 41-18.4N 009-20.4E unlit
- HYDROLANT 2597/01 · Nav aids2001-10-03 → 2001-10-04Ile lavezzi light 41-20.1N 009-15.6E unlit
- HYDROLANT 2590/01 · Nav aids2001-10-03 → 2001-10-05Punta cala scirocco light 43-25.2N 009-54.1E unlit
- HYDROLANT 2574/01 · Exercises2001-10-01 → 2001-10-05Torpedo firing exercises 0600Z to 1400Z daily 03 thru 05 oct within three miles of 43-48N 009-45E
- HYDROLANT 2562/01 · Nav aids2001-09-29 → 2001-10-01Punta filleto light 41-17.4N 009-23.1E unlit
- HYDROLANT 2561/01 · Nav aids2001-09-29 → 2001-11-02Capo suvero light 38-57.1N 016-09.5E unlit
- HYDROLANT 2555/01 · Exercises2001-09-28 → 2001-10-31Gunnery exercises 0700Z to 1530Z daily 01 thru 31 oct, except saturdays and sundays, in areas bound by: a.…
- HYDROLANT 2545/01 · Nav aids2001-09-27 → 2001-11-09RACON at ile lavezzi light 41-19.0N 009-15.3E s-band off air
- HYDROLANT 2534/01 · Exercises2001-09-24 → 2001-09-26Gunnery exercises 260700Z to 261100Z sep within three miles of 38-33.1N 015-42.6E
- HYDROLANT 2517/01 · Ordnance2001-09-21 → 2001-09-27Underwater ordnance detonations 0600Z to 1800Z daily 25 thru 27 sep within one mile of 43-59.0N 009-55.5E
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.