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 1717/06 · Nav aids2006-09-20 → 2006-10-18Isola tavolara light 40-55.2N 009-44.2E unlit
- HYDROLANT 1667/06 · Nav aids2006-09-12 → 2006-09-21Isola corcelli light 41-18.1N 009-24.1E unlit
- HYDROLANT 1592/06 · Wrecks2006-08-31 → 2008-02-09Dangerous wreck in 39-08.9N 009-10.7E
- HYDROLANT 1553/06 · Derelicts2006-08-24 → 2006-08-31Derelict ten meter vessel adrift in 40-35N 010-35E
- HYDROLANT 1547/06 · Ordnance2006-08-24 → 2006-08-25Underwater ordnance detonations in progress thru 30 aug vicinity 39-08.5N 009-39.9E
- HYDROLANT 1536/06 · Ordnance2006-08-23 → 2006-08-30Underwater ordnance detonations in progress thru 29 aug vicinity 39-28.7N 009-43.4E
- HYDROLANT 1531/06 · Nav aids2006-08-22 → 2006-08-24Capo comino light 40-32N 009-50E unlit
- HYDROLANT 1416/06 · Incidents2006-08-01 → 2006-09-13Ten meter vessel, one person on board, unreported to arzachena (41-05N 009-22E)
- HYDROLANT 1379/06 · Incidents2006-07-25 → 2006-09-06Person missing from M/V voyager of the seas vicinity of trackline between 41-04N 012-18E at 242230Z jul and…
- HYDROLANT 1353/06 · Nav aids2006-07-18 → 2007-12-02Isolotti monaci light 41-13.0N 009-31.1E unlit
- HYDROLANT 1303/06 · Ordnance2006-07-12 → 2006-07-15Underwater ordnance detonations 13 jul, alternate 14 jul in 41-17.2N 009-30.6E
- HYDROLANT 1297/06 · Other2006-07-12 → 2006-07-13Bombing exercises 12 jul within 4000 meters of 39-07.3N 009-11.7E
- HYDROLANT 1272/06 · Containers2006-07-06 → 2006-07-13Container adrift vicinity 38-25N 015-11E at 062100Z jul
- HYDROLANT 1256/06 · Surveys2006-07-04 → 2006-07-18Oceanographic operations 06 thru 17 jul by M/V poseidon in areas: a. bound by 38-41.0N 015-05.0E, 38-40.0N…
- HYDROLANT 1230/06 · Other2006-06-29 → 2006-06-30Bombing exercises 29 jun within 4000 meters of 39-07.3N 009-11.7E
- HYDROLANT 1196/06 · Containers2006-06-24 → 2006-07-01Container adrift vicinity 38-43.4N 014-50.9E
- HYDROLANT 1123/06 · Derelicts2006-06-11 → 2006-06-18Derelict M/V pedalo adrift vicinity 38-09.2N 012-35.6E
- HYDROLANT 1107/06 · Surveys2006-06-08 → 2006-06-16Oceanographic operations 10 thru 15 jun by M/V universitatis in areas bound by: a. 38-22.6N 014-57.6E,…
- HYDROLANT 1061/06 · Other2006-06-01 → 2006-06-14Capo ferro light 41-09.3N 009-31.4E at reduced intensity
- HYDROLANT 1038/06 · Exercises2006-05-29 → 2006-06-20Hazardous operations: a. 0800Z to 1900Z daily 01, 05 thru 09, 12 thru 16, 19 and 20 jun 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.