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 2683/99 · Exercises1999-12-11 → 1999-12-14Gunnery exercises 0700Z to 1700Z daily 13 thru 15 dec in area bbound by 43-53N 009-46E, 43-53N 009-53E,…
- HYDROLANT 2655/99 · Containers1999-12-08 → 1999-12-15Container adrift in 43-15.6N 009-56.2E
- HYDROLANT 2636/99 · Containers1999-12-06 → 2000-02-07Three containers adrift in 43-22N 010-07E
- HYDROLANT 2593/99 · Nav aids1999-12-02 → 1999-12-04Scoglietto light 42-49.7N 010-19.9E unlit
- HYDROLANT 2583/99 · Nav aids1999-12-01 → 1999-12-10Forte la rocca light 42-23.4N 011-12.8E unlit
- HYDROLANT 2578/99 · Exercises1999-11-30 → 1999-12-17Gunnery exercises 0800Z to 1730Z daily 01 thru 03, 06 thru 10 and 13 thru 17 dec in area bound by 40-00N…
- HYDROLANT 2553/99 · Cable ops1999-11-27 → 1999-12-09Underwater cable operations 281400Z nov until further notice by M/V certamen within three miles of 41-13.7N…
- HYDROLANT 2511/99 · Nav aids1999-11-23 → 2000-01-28Capo palinuro light 40-01.4N 015-16.6E unlit
- HYDROLANT 2494/99 · Cable ops1999-11-21 → 1999-11-25Underwater cable operations in progress until 24 nov by M/V certamen within three miles of 38-54.25N…
- HYDROLANT 2477/99 · Nav aids1999-11-18 → 1999-11-19Viareggio light 43-51.4N 010-14.2E unlit
- HYDROLANT 2416/99 · Exercises1999-11-11 → 1999-11-19Gunnery exercises 0800Z to 1630Z daily 15 thru 19 nov in area bound by 40-15N 010-00E, 40-15N 011-50E,…
- HYDROLANT 2411/99 · Nav aids1999-11-11 → 1999-11-11Pointe de chiappa light 41-35.7N 009-22.0E unlit
- HYDROLANT 2366/99 · Exercises1999-11-05 → 1999-11-30Gunnery exercises 0800Z to 1630Z daily 05, 08 thru 12, 15 thru 19, 22 thru 26 and 29 thru 30 nov in area…
- HYDROLANT 2354/99 · Exercises1999-11-04 → 1999-11-19Gunnery exercises 0800Z to 1800Z daily 05 and 16 thru 19 nov in area bound by 40-38N 009-54E, 41-00N…
- HYDROLANT 2353/99 · Exercises1999-11-04 → 1999-11-05Gunnery exercises 0800Z to 1630Z daily 05, 08 thru 12, 15 thru 19, 22 thru 26 and 29 thru 30 nov in area…
- HYDROLANT 2348/99 · Ordnance1999-11-04 → 2001-03-13Unexploded ordnance vicinity 39-16-47.3N 009-39-39.9E
- HYDROLANT 2342/99 · Nav aids1999-11-03 → 1999-11-12Isola della bocca light 40-55.2N 009-34.0E unlit
- HYDROLANT 2340/99 · Nav aids1999-11-03 → 1999-12-24Secca di san caterina light 39-05.5N 009-29.7E unlit
- HYDROLANT 2330/99 · Nav aids1999-11-02 → 1999-11-03Isola della bocca light 40-55N 009-34E unlit
- HYDROLANT 2303/99 · Nav aids1999-10-28 → 1999-12-10Iles lavezzi light 41-20.1N 009-15.6E changed to OC(2) wr 6 sec 17/14 miles with sectors white 243-351,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.