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% |
| Missiles | 1 | 0% |
| Spills | 1 | 0% |
Archive · 862 cancelled
- HYDROLANT 2296/99 · Other1999-10-28 → 1999-12-10Monte poro light 42-43.6N 010-14.3E at reduced intensity
- HYDROLANT 2287/99 · Nav aids1999-10-26 → 2000-01-14Isola palmaiola light 42-51.9N 010-28.6E unlit
- HYDROLANT 2286/99 · Nav aids1999-10-26 → 1999-10-28Isola del tino light 44-01.6N 009-51.0E unlit
- HYDROLANT 2276/99 · Nav aids1999-10-25 → 1999-10-28Monte poro light 42-43.6N 010-14.3E unlit
- HYDROLANT 2255/99 · Nav aids1999-10-22 → 1999-10-25Meloria south tower light 43-32.8N 010-13.2E unlit
- HYDROLANT 2185/99 · Nav aids1999-10-12 → 1999-10-12Isola razzoli light 41-18.4N 009-20.4E unlit
- HYDROLANT 2135/99 · Exercises1999-10-07 → 1999-10-29Gunnery exercises 0700Z to 1530Z daily 07, 08, 14, 15, 21, 22 and 25 thru 29 oct in areas bound by: a.…
- HYDROLANT 2134/99 · Nav aids1999-10-07 → 1999-10-09Pertusato light 41-22.1N 009-11.1E unreliable
- HYDROLANT 2056/99 · Exercises1999-09-27 → 1999-10-01Gunnery exercises 011100Z to 011700Z oct within 15 miles of 40-00N 010-25E
- HYDROLANT 2055/99 · Nav aids1999-09-27 → 1999-09-28Ile lavezzi light 41-20.1N 009-15.6E unlit
- HYDROLANT 2041/99 · Exercises1999-09-24 → 1999-09-30Torpedo firing exercises 0400Z to 1800Z daily 27 thru 30 sep within five miles of 43-49.5N 009-47.5E
- HYDROLANT 2037/99 · Surveys1999-09-24 → 1999-10-15Underwater operations 27 sep thru 08 oct by M/V alliance with submersible in area bound by 42-48N 010-00E,…
- HYDROLANT 2002/99 · Exercises1999-09-20 → 1999-09-30Gunnery exercises 0600Z to 1530Z daily 21 thru 24 and 28 thru 30 sep in area bound by 40-00N 010-00E, 40-00N…
- HYDROLANT 1989/99 · Nav aids1999-09-18 → 1999-09-23Isola d'elba light 42-43.6N 010-14.2E unlit
- HYDROLANT 1988/99 · Wrecks1999-09-17 → 1999-09-19Meloria shoals south cardinal beacon 43-32.7N 010-13.2E unlit
- HYDROLANT 1967/99 · Wrecks1999-09-15 → 1999-09-17Meloria shoals south cardinal light 43-32.7N 010-13.2E unlit
- HYDROLANT 1964/99 · Nav aids1999-09-15 → 1999-09-23Ecueil de perduto light 41-22N 009-19E unlit
- HYDROLANT 1908/99 · Nav aids1999-09-07 → 1999-09-08Isola della bacon light 40-55.2N 009-34.0E unlit
- HYDROLANT 1863/99 · Wrecks1999-09-02 → 2001-06-07Dangerous wreck in 41-33.5N 012-26.5E
- HYDROLANT 1838/99 · Nav aids1999-08-30 → 1999-09-02Monte poro light 42-43.6N 010-14.2E unlit
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.