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 940/03 · Nav aids2003-05-13 → 2003-05-14Capo zafferano light 38-06.6N 013-32.5E unlit
- HYDROLANT 865/03 · Exercises2003-04-29 → 2003-05-30Hazardous operations 0700Z to 1530Z daily: a. 02, 05 thru 09, 12 thru 16, 19 thru 23 and 26 thru 30 may in…
- HYDROLANT 827/03 · Exercises2003-04-22 → 2003-04-30Hazardous operations 0800Z to 1630Z daily: a. 23, 24 and 28 thru 30 apr in area bound by 40-00N 010-00E,…
- HYDROLANT 825/03 · Cable ops2003-04-22 → 2003-05-04Underwater cable operations 240600Z apr until further notice by cableship pertinacia vicinity of trackline…
- HYDROLANT 822/03 · Nav aids2003-04-22 → 2003-04-28Capo zafferano light 38-06.6N 013-32.5E unlit
- HYDROLANT 707/03 · Cable ops2003-04-05 → 2003-04-12Cable operations 080600Z to 122159Z apr by cableship pertinacia along trackline joining 40-00N 012-17E,…
- HYDROLANT 701/03 · Exercises2003-04-04 → 2003-04-10Gunnery exercises 07 thru 09 apr in area bound by 41-11-09N 009-28-50E, 41-11-27N 009-29-45E, 41-10-48N…
- HYDROLANT 681/03 · Nav aids2003-04-01 → 2003-04-02Capo zafferano light 38-06.6N 013-32.5E unlit
- HYDROLANT 653/03 · Exercises2003-03-28 → 2003-04-22Hazardous operations 0800Z to 1630Z daily: a. 01 thru 04, 07 thru 11, 14 thru 18, 22 thru 24 and 28 thru 30…
- HYDROLANT 629/03 · Cable ops2003-03-25 → 2003-04-05Cable operations in progress until 071200Z apr by cableship pertinacia in area bound by 41-34.3N 012-06.3E,…
- HYDROLANT 551/03 · Nav aids2003-03-12 → 2003-05-17Capo bonifati light 39-32.5N 015-53.3E unlit
- HYDROLANT 540/03 · Nav aids2003-03-11 → 2003-03-26Capo gallo light 38-13.3N 013-19.1E range temporarily reduced to nine miles
- HYDROLANT 516/03 · Nav aids2003-03-07 → 2003-03-07Capo di milazzo light 38-16.1N 015-13.9E unlit
- HYDROLANT 485/03 · Exercises2003-03-03 → 2003-03-31Hazardous operations 0800Z to 1630Z daily: a. 03 thru 07, 10 thru 14, 17 thru 21, 24 thru 28 and 31 mar in…
- HYDROLANT 437/03 · Nav aids2003-02-26 → 2003-03-07Punta lingua light 38-32.3N 014-52.3E unlit
- HYDROLANT 426/03 · Exercises2003-02-24 → 2003-02-26Gunnery exercises 260700Z to 261600Z feb in area bound by 39-48-24N 013-39-32E, 39-40-00N 014-30-00E,…
- HYDROLANT 357/03 · Nav aids2003-02-14 → 2003-03-11Punta sottile light 37-56.0N 012-16.4E unlit
- HYDROLANT 340/03 · Nav aids2003-02-12 → 2003-03-07Capo faro light 38-34.8N 014-52.2E unlit
- HYDROLANT 327/03 · Nav aids2003-02-11 → 2003-02-11Capo zafferano light 38-06.6N 013-32.5E unlit
- HYDROLANT 274/03 · Nav aids2003-02-05 → 2003-03-01Capo di milazzo light 38-16.1N 015-13.9E 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.