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
97
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
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 91/05 · Nav aids2005-01-13 → 2006-02-01Capo carbonara light 39-06.2N 009-30.8E unlit
- HYDROLANT 46/05 · Exercises2005-01-07 → 2005-01-14Hazardous operations: a. 0800Z to 1900Z daily 11 thru 13, 17 thru 20, 24 thru 27, 31 jan and 0800Z to 1200Z…
- HYDROLANT 2066/04 · Nav aids2004-12-28 → 2005-01-17Isola vulcano light 38-22.0N 014-59.5E unlit
- HYDROLANT 2040/04 · Nav aids2004-12-22 → 2006-02-01Punta solanto light 38-10.4N 012-46.1E unlit
- HYDROLANT 2004/04 · Cable ops2004-12-16 → 2004-12-28Cable operations in progress until further notice by M/V rene descartes in area bound by: a. 38-03.5N…
- HYDROLANT 1861/04 · Nav aids2004-11-18 → 2007-12-02Isola stromboli light 38-49.0N 015-15.2E unlit
- HYDROLANT 1837/04 · Exercises2004-11-13 → 2004-11-19Gunnery exercises 150700Z to 151500Z nov, alternate 190700Z to 191500Z nov within six miles of 38-01-08N…
- HYDROLANT 1778/04 · Incidents2004-11-03 → 2004-12-20Man overboard from M/V eurostar valencia vicinity of trackline between 38-49.02N 008-34.00E and 39-36.60N…
- HYDROLANT 1767/04 · Ordnance2004-11-02 → 2004-11-04Ordnance detonations 02 nov, alternate 03 nov within 4000 meters of 41-15.1N 009-36.2E
- HYDROLANT 1687/04 · Exercises2004-10-18 → 2004-10-20Gunnery exercises 0600Z to 1400Z daily 18 and 19 oct, alternate 20 and 21 oct within six miles of 38-30.4N…
- HYDROLANT 1665/04 · Surveys2004-10-13 → 2004-10-27Survey operations 16 thru 26 oct by M/V universitatis in areas bound by a. 38-08.50N 013-29.00E, 38-08.45N…
- HYDROLANT 1607/04 · Exercises2004-10-01 → 2004-10-29Hazardous operations: a. 0700Z to 1800Z daily 04 thru 08, 11 thru 15, 18 thru 22, and 25 thru 29 oct in area…
- HYDROLANT 1554/04 · Debris2004-09-23 → 2004-09-30200 meter long fishing net adrift vicinity 38-55.2N 014-52.3E at 221545Z sep
- HYDROLANT 1538/04 · Nav aids2004-09-20 → 2004-09-22Zafferano cape lighthouse 38-06.6N 013-32.5E unlit
- HYDROLANT 1536/04 · Nav aids2004-09-20 → 2004-09-22Punta coda sardegna light 41-12.4N 009-21.8E unlit
- HYDROLANT 1519/04 · Exercises2004-09-17 → 2004-09-30Hazardous operations: a. 0700Z to 1800Z daily 21 thru 24 and 27 thru 30 sep in area bound by 40-00N 010-00E,…
- HYDROLANT 1517/04 · Nav aids2004-09-17 → 2004-09-22Isola santa maria light 41-17.4N 009-23.1E unlit
- HYDROLANT 1515/04 · Nav aids2004-09-17 → 2004-10-01Capo di milazzo light 38-16.1N 015-13.9E unlit
- HYDROLANT 1514/04 · Derelicts2004-09-17 → 2004-09-24Derelict 21 meter vessel, partially submerged and adrift in 38-59.1N 015-39.7E
- HYDROLANT 1475/04 · Surveys2004-09-09 → 2004-09-30Oceanographic survey in progress until further notice in area bound by 41-08.43N 009-46.31, 41-16.60N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.