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 1309/01 · Other2001-05-03 → 2001-07-06Isola palmaiola light 42-51.9N 010-28.5E at reduced intensity
- HYDROLANT 1290/01 · Exercises2001-05-01 → 2001-05-06Gunnery exercises 060530Z to 060730Z may within 25 miles of 38-55N 014-45E
- HYDROLANT 1286/01 · Exercises2001-04-30 → 2001-05-31Gunnery exercises 0700Z to 1530Z daily: a. 02 thru 04, 07 thru 11, 14 thru 18, 21 thru 25 and 28 thru 31 may…
- HYDROLANT 1269/01 · Derelicts2001-04-28 → 2001-05-05Derelict 30 meter vessel adrift vicinity 43-06.3N 010-29.5E
- HYDROLANT 1265/01 · Nav aids2001-04-27 → 2001-05-03Isola razzoli light 41-18.4N 009-20.4E unlit
- HYDROLANT 1240/01 · Nav aids2001-04-24 → 2002-10-11Corcelli island light 41-18N 009-24E changed to: FL(2) w 10 sec 11 miles
- HYDROLANT 1236/01 · Exercises2001-04-24 → 2001-04-30Gunnery exercises 0700Z to 1530Z daily: a. 24, 26, 27 and 30 apr in area bound by 40-00N 010-00E, 40-00N…
- HYDROLANT 1105/01 · Nav aids2001-04-09 → 2001-05-03Isola palmaiola light 42-51.9N 010-28.5E unreliable
- HYDROLANT 1056/01 · Derelicts2001-04-03 → 2001-04-10Derelict vessel adrift vicinity 43-46.1N 009-58.8E
- HYDROLANT 1045/01 · Nav aids2001-04-02 → 2001-04-26Perduto rock light 41-22N 009-19E unlit
- HYDROLANT 987/01 · Exercises2001-03-27 → 2001-03-30Torpedo firing exercises 0700Z to 1600Z daily 28 thru 30 mar within three miles of 43-48N 009-45E
- HYDROLANT 950/01 · Ordnance2001-03-23 → 2001-03-28Underwater ordnance detonations 0600Z to 1400Z daily 26 thru 28 mar within two miles of 43-59.0N 009-55.5E
- HYDROLANT 914/01 · Surveys2001-03-20 → 2001-03-29Survey operations in progress until 292259Z mar by M/V suroit in area bound by 43-00.0N 009-58.2E, 42-00.0N…
- HYDROLANT 880/01 · Exercises2001-03-17 → 2001-03-23Torpedo firing exercises 0700Z to 1600Z daily 21 thru 23 mar within three miles of 43-48N 009-45E
- HYDROLANT 855/01 · Containers2001-03-14 → 2001-03-21Two containers adrift vicinity 40-13N 014-37E
- HYDROLANT 847/01 · Exercises2001-03-14 → 2001-03-16Torpedo firing exercises 0700Z to 1600Z daily 15 and 16 mar within three miles of 43-48N 009-45E
- HYDROLANT 760/01 · Surveys2001-03-06 → 2001-03-08Underwater operations 072301Z thru 081100Z mar by M/V certamen with submersible within two miles of 41-37.0N…
- HYDROLANT 633/01 · Incidents2001-02-21 → 2001-02-22Man overboard from M/V zim britain in 39-49N 012-13E
- HYDROLANT 628/01 · Incidents2001-02-21 → 2001-04-06Man overboard from M/V zim britain in 39-49N 012-13E
- HYDROLANT 551/01 · Nav aids2001-02-15 → 2001-04-05Isola palmaiola light 42-51.9N 010-28.5E 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.