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 723/07 · Incidents2007-04-30 → 2007-06-1015 meter F/V karol w, four persons on board, white hull overdue trapani, sicily (38-01N 012-31E)
- HYDROLANT 667/07 · Incidents2007-04-22 → 2007-06-10M/V unreported, one person on board, last known position vicinity fiumicino (41-47N 012-14E) 21 apr
- HYDROLANT 582/07 · Derelicts2007-04-09 → 2007-04-16Lifeboat adrift in 38-43-47N 010-18-42E
- HYDROLANT 570/07 · Incidents2007-04-07 → 2007-04-09Liferaft adrift 38-43-47N 010-18-42E, unknown if persons on board
- HYDROLANT 131/07 · Restricted2007-01-22 → 2007-01-28Navigation prohibited 23 thru 27 jan within 500 meters of 39-10.28N 009-05.24E
- HYDROLANT 109/07 · Nav aids2007-01-18 → 2008-02-09Capo bellavista light 39-55.8N 009-42.8E unlit
- HYDROLANT 70/07 · Missiles2007-01-12 → 2007-02-28Debris from de-orbiting satellite 0400Z to 1700Z daily 15 jan thru 28 feb in area bound by 39-25.8N…
- HYDROLANT 69/07 · Exercises2007-01-12 → 2007-02-28Hazardous operations: a. 0800Z to 1700Z daily 15 thru 19, 22 thru 26, 29 thru 31 jan, 01, 02, 05 thru 09, 12…
- HYDROLANT 2293/06 · Nav aids2006-12-23 → 2007-12-02Isolotti monaci light 41-13.0N 009-31.1E unlit
- HYDROLANT 2242/06 · Nav aids2006-12-15 → 2006-12-17Odas buoy established in 42-42.758N 009-36.417E
- HYDROLANT 2146/06 · Cable ops2006-12-01 → 2007-03-02Underwater operations in progress until 01 mar 07 by cableship teliri and M/V universitatis along tracklines…
- HYDROLANT 2115/06 · Ordnance2006-11-24 → 2008-02-09Unexploded ordnance within 300 meters of 39-52.43N 009-49.04E
- HYDROLANT 2078/06 · Ordnance2006-11-16 → 2008-02-09Unexploded ordnance in 39-31.47N 009-39.63E
- HYDROLANT 1990/06 · Surveys2006-10-31 → 2006-11-09Oceanographic operations in progress until 08 nov vicinity: a. 41-24N 010-06E
- USGS-USP000EW2Z · Quakes2006-10-26 → 2006-10-2940 km w of san nicolò, italy
- HYDROLANT 1951/06 · Nav aids2006-10-23 → 2007-12-02Capo comino light 40-32.0N 009-50.0E unlit
- HYDROLANT 1898/06 · Nav aids2006-10-16 → 2006-10-25Punta sottile light 37-56.0N 012-16.4E unlit
- HYDROLANT 1774/06 · Exercises2006-09-29 → 2006-10-31Hazardous operations 0900Z to 2000Z daily 02 thru 06, 09 thru 13, 16 thru 20, 23 thru 27, 30 and 31 oct in…
- HYDROLANT 1737/06 · Incidents2006-09-23 → 2006-11-08Six meter vessel, white hull, three persons on board, unreported
- HYDROLANT 1724/06 · Exercises2006-09-21 → 2006-09-29Hazardous operations 0900Z to 2000Z daily 25 thru 29 sep in areas bound by: a. 40-00N 010-00E, 40-00N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.