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 344/04 · Nav aids2004-02-28 → 2004-03-02Scoglio palumbo light 38-00.9N 012-29.2E unlit
- HYDROLANT 343/04 · Exercises2004-02-28 → 2004-03-31Hazardous operations: a. 0700Z to 1900Z daily 01 thru 05, 08 thru 12, 15 thru 19, 22 thru 26 and 29 thru 31…
- HYDROLANT 294/04 · Exercises2004-02-19 → 2004-02-27Hazardous operations: a. 0700Z to 1900Z daily 19, 20 and 23 thru 27 feb in area bound by 40-00N 010-00E,…
- HYDROLANT 256/04 · Nav aids2004-02-12 → 2004-02-28Capo suvero light 38-57.1N 016-09.5E unlit
- HYDROLANT 254/04 · Surveys2004-02-12 → 2004-03-03Underwater operations 15 feb until further notice by M/V skandi inspector vicinity of areas bound by: a.…
- HYDROLANT 199/04 · Ordnance2004-02-03 → 2004-02-04Underwater ordnance detonations 03 feb within 4000 meters of 41-15.1N 009-36.2E
- HYDROLANT 191/04 · Exercises2004-02-02 → 2004-02-19Hazardous operations: a. 0700Z to 1900Z daily 02 thru 06, 09 thru 13, 16 thru 20 and 23 thru 27 feb in area…
- HYDROLANT 177/04 · Nav aids2004-01-30 → 2004-03-26Punta sottile light 37-56.0N 012-16.4E unlit
- HYDROLANT 175/04 · Cable ops2004-01-30 → 2004-02-11Cable operations 31 jan thru 10 feb by M/V teliri vicinity of trackline between 38-57.7N 009-12.3E and…
- HYDROLANT 174/04 · Derelicts2004-01-30 → 2004-02-04Derelict 11 meter vessel adrift in 039-48.6N 009-44.9E
- HYDROLANT 164/04 · Nav aids2004-01-28 → 2004-05-29Isola filicudi light 38-35N 014-33E unlit
- HYDROLANT 40/04 · Nav aids2004-01-09 → 2004-02-05Secca corsara light 41-13.4N 009-20.2E unlit
- HYDROLANT 33/04 · Surveys2004-01-08 → 2004-01-15Oceanographic operations in progress until further notice by M/V urania: a. in 37-23.10N 011-35.55E
- HYDROLANT 19/04 · Exercises2004-01-05 → 2004-01-30Hazardous operations: a. 0800Z to 1900Z daily 07 thru 09, 12 thru 16, 19 thru 23 and 26 thru 30 jan in area…
- HYDROLANT 18/04 · Nav aids2004-01-05 → 2004-01-05Punta cavazzi light 38-41.6N 013-09.3E unlit
- HYDROLANT 15/04 · Nav aids2004-01-04 → 2004-01-09Capo ferrato light 39-17.9N 009-38.0E unlit
- HYDROLANT 2404/03 · Other2003-12-29 → 2004-01-12Punta cavazzi light 38-41.6N 013-09.3E at reduced intensity
- HYDROLANT 2383/03 · Incidents2003-12-23 → 2004-02-07Man overboard from M/V pegasus vicinity 40-29N 014-21E
- HYDROLANT 2364/03 · Derelicts2003-12-21 → 2003-12-2812 meter vessel adrift vicinity 40-31.1N 010-45.4E
- HYDROLANT 2227/03 · Exercises2003-11-28 → 2003-12-19Hazardous operations: a. 0800Z to 1900Z daily 01 thru 05, 09 thru 12 and 15 thru 19 dec in area bound by…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.