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 1025/06 · Other2006-05-26 → 2006-07-12Man overbaord from M/V island escape vicinity 39-26.7N 014-54.2E at 260100Z may.vessels in vicinity…
- HYDROLANT 997/06 · Exercises2006-05-23 → 2006-05-30Gunnery exercises 0600Z to 1400Z daily 26 and 27 may, alternate 29 and 30 may within six miles of 38-30.40N…
- HYDROLANT 968/06 · Nav aids2006-05-19 → 2006-05-24Isola dei cavoli light 39-05.3N 009-32.1E unlit
- HYDROLANT 903/06 · Nav aids2006-05-12 → 2006-05-15Capo comino light 40-32N 009-50E unlit
- HYDROLANT 859/06 · Exercises2006-05-04 → 2006-05-19Hazardous operations 0600Z to 1000Z daily 05 thru 19 may within 3000 yards of a. 41-11.43N 009-03.35E
- HYDROLANT 818/06 · Exercises2006-04-28 → 2006-05-31Hazardous operations 0900Z to 2000Z daily 02 thru 05, 08 thru 12, 15 thru 19, 22 thru 26, and 29 thru 31 may…
- HYDROLANT 785/06 · Exercises2006-04-24 → 2006-04-27Hazardous operations 270900Z to 271800Z apr in areas bound by: a. 38-57-00N 008-37-06E, 38-56-24N…
- HYDROLANT 765/06 · Nav aids2006-04-21 → 2006-05-04Capo spartiuento light 38-52.6N 008-50.7E unlit
- HYDROLANT 724/06 · Exercises2006-04-13 → 2006-06-06Hazardous operations in progress until further notice within 4000 meters of 41-18.4N 009-29.0E
- HYDROLANT 710/06 · Other2006-04-11 → 2006-04-13Bombing exercises 12 apr within 4000 meters of 41-18.4N 009-29.0E
- HYDROLANT 704/06 · Other2006-04-10 → 2006-04-11Bombing exercises 11 apr within 4000 meters of 41-18N 009-29E
- HYDROLANT 681/06 · Other2006-04-06 → 2006-04-07Bombing exercises within 4000 meters of 39-07.3N 009-11.7E
- HYDROLANT 666/06 · Cable ops2006-04-04 → 2006-06-06Underwater operations in progress until further notice by cableship teliri vicinity 39-09.06N 009-08.38E
- HYDROLANT 665/06 · Exercises2006-04-04 → 2006-04-28Hazardous operations 0900Z to 2000Z daily 03 thru 07, 10 thru 14, 18 thru 21, 24 and 26 thru 28 apr in area…
- HYDROLANT 658/06 · Nav aids2006-04-03 → 2006-05-18Punta dei porci light 38-22.0N 014-59.5E unlit
- HYDROLANT 637/06 · Surveys2006-03-31 → 2006-04-02Oceanographic operations in progress until further notice by M/V poseidon along trackline joining 38-10N…
- HYDROLANT 614/06 · Surveys2006-03-29 → 2006-06-06Underwater operations in progress until further notice within half mile of 39-10.06N 009-04.64E
- HYDROLANT 572/06 · Nav aids2006-03-22 → 2006-03-30Punta lingua light 38-32.2N 014-52.3E unlit
- HYDROLANT 562/06 · Wrecks2006-03-21 → 2008-02-09Dangerous wreck vicinity 39-06.84N 009-30.12E
- HYDROLANT 550/06 · Restricted2006-03-20 → 2006-03-21Navigation prohibited until 23 mar in areas between: a. 38-24N 015-18E, 38-21N 015-18E
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.