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% |
| Missiles | 1 | 0% |
| Spills | 1 | 0% |
Archive · 862 cancelled
- HYDROLANT 3595/00 · Other2000-10-23 → 2000-10-27Pyrotechnics exercises 25 and 26 oct within one mile of: a. 44-03-00N 009-47-03E
- HYDROLANT 3594/00 · Ordnance2000-10-23 → 2000-10-26Underwater ordnance detonations 0600Z to 1200Z daily 25 and 26 oct within one mile of 43-59.0N 009-55.5E
- HYDROLANT 3590/00 · Incidents2000-10-22 → 2000-12-08Man overboard from M/V astra II vicinity 42-10N 011-36E at 221654Z oct
- HYDROLANT 3522/00 · Ordnance2000-10-16 → 2000-10-19Underwater ordnance detonations 0600Z to 1200Z daily 18 and 19 oct within one mile of 43-59.0N 009-55.3E
- HYDROLANT 3465/00 · Nav aids2000-10-11 → 2000-11-09Ecueil lavezzi light 41-19.0N 009-15.3E unreliable
- HYDROLANT 3440/00 · Nav aids2000-10-09 → 2001-01-05Talamone light 42-33.1N 011-08.0E unlit
- HYDROLANT 3425/00 · Surveys2000-10-06 → 2000-10-16Underwater operations 07 thru 15 oct by M/V tethys II in area bound by 41-30N 008-45E, 41-30N 009-30E,…
- HYDROLANT 3415/00 · Nav aids2000-10-05 → 2000-11-20RACON at ecueil lavezzi light 41-19.0N 009-15.3E off air
- HYDROLANT 3326/00 · Surveys2000-09-27 → 2000-09-28Hydrographic survey 29 sep thru 02 oct by M/V geo surveyor towing equipment within 2000 meters of trackline…
- HYDROLANT 3324/00 · Surveys2000-09-27 → 2000-09-27Hydrographic survey in progress until further notice by M/V geo surveyor towing equipment in area bound by…
- HYDROLANT 3300/00 · Containers2000-09-25 → 2000-10-02Container adrift in 43-30-48N 010-15-00E
- HYDROLANT 3293/00 · Exercises2000-09-25 → 2000-09-25Gunnery exercises in progress until 251400Z sep in area bound by 43-53N 009-46E, 43-53N 009-53E, 43-45N…
- HYDROLANT 3232/00 · Exercises2000-09-19 → 2000-09-23Gunnery exercises 200600Z to 200800Z, 201000Z to 201130Z, 201230Z to 201600Z, 210830Z to 211500Z, 220830Z to…
- HYDROLANT 3111/00 · Surveys2000-09-08 → 2000-09-16Underwater oceanographic operations 12 thru 15 sep by M/V alliance with submersibles in area bound by 44-01N…
- HYDROLANT 3041/00 · Surveys2000-09-01 → 2000-09-16Survey operations in progress until 15 sep by M/V urania in areas: a. bound by 41-48N 011-34E, 41-21N…
- HYDROLANT 2993/00 · Derelicts2000-08-28 → 2000-09-04Derelict 11 meter S/V partially submerged in 41-08.9N 012-57.3E
- HYDROLANT 2992/00 · Ordnance2000-08-28 → 2000-09-01Unexploded ordnance in 43-32.762N 010-13.003E
- HYDROLANT 2935/00 · Exercises2000-08-23 → 2000-08-28Gunnery exercises 280600Z to 281000Z aug vicinity 40-17N 012-40E
- HYDROLANT 2813/00 · Nav aids2000-08-12 → 2000-08-17Viareggio harbor light 43-51.4N 010-14.2E unlit
- HYDROLANT 2810/00 · Exercises2000-08-11 → 2000-08-16Gunnery exercises 160900Z to 161200Z aug within 20 miles of 39-03N 014-40E
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.