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 2505/01 · Nav aids2001-09-20 → 2001-10-11Punta paratella light 43-26.3N 009-54.1E unlit
- HYDROLANT 2490/01 · Exercises2001-09-19 → 2001-09-27Gunnery exercises 0700Z to 1530Z daily 21, 24, 25, 26 and 27 sep in area bound by 40-00N 010-00E, 40-00N…
- HYDROLANT 2467/01 · Ordnance2001-09-14 → 2001-09-20Underwater ordnance detonations 0600Z to 1800Z daily 19 and 20 sep within one mile of 43-59.0N 009-55.5E
- HYDROLANT 2466/01 · Exercises2001-09-14 → 2001-09-21Torpedo firing exercises 0600Z to 1600Z daily 18 thru 21 sep within three miles of 43-48N 009-45E
- HYDROLANT 2455/01 · Surveys2001-09-12 → 2001-10-05Survey operations in progress until further notice by M/V president in areas bound by: a. 37-59.2N…
- HYDROLANT 2443/01 · Exercises2001-09-10 → 2001-09-14Hazardous operations 0800Z to 1400Z daily 12 thru 14 sep in area bound by 44-03.6N 009-51.9E, 44-02.7N…
- HYDROLANT 2442/01 · Exercises2001-09-10 → 2001-09-11Gunnery exercises 110630Z to 111130Z sep in area bound by 44-00N 009-53E, 44-00N 009-39E, 43-53N 009-46E,…
- HYDROLANT 2440/01 · Exercises2001-09-09 → 2001-09-11Gunnery exercises 100700Z to 101100Z, 101300Z to 101500Z and 110700Z to 111100Z sep in area bound by 39-20N…
- HYDROLANT 2436/01 · Surveys2001-09-09 → 2001-09-09Survey operations in progress until 20 sep by M/V thetis vicinity of trackline between 41-01.3N 013-46.7E…
- HYDROLANT 2417/01 · Surveys2001-09-06 → 2001-10-04Underwater operations 10 sep thru 10 oct by M/V blue dream with submersible along trackline joining 38-15.1N…
- HYDROLANT 2393/01 · Exercises2001-09-03 → 2001-09-28Gunnery exercises 032200Z to 282200Z sep in area bound by 42-16.5N 011-39.7E, 42-17.3N 011-33.5E, 42-12.6N…
- HYDROLANT 2368/01 · Cable ops2001-08-29 → 2001-09-06Cable operations 30 aug until further notice by M/V certamen vicinity of trackline joining 38-38.1N…
- HYDROLANT 2349/01 · Nav aids2001-08-27 → 2002-02-15Capo palinuro light 40-01.4N 015-16.6E unlit
- HYDROLANT 2342/01 · Ordnance2001-08-26 → 2001-09-01Underwater ordnance detonations 27 thru 31 aug vicinity 41-17.2N 009-30.6E
- HYDROLANT 2306/01 · Nav aids2001-08-22 → 2001-10-05Iles lavezzi light 41-19.0N 009-15.3E unreliable
- HYDROLANT 2298/01 · Nav aids2001-08-21 → 2001-08-27Capo cefalu light 38-02N 014-02E unlit
- HYDROLANT 2252/01 · Derelicts2001-08-14 → 2001-08-21Derelict 23 meter S/V adrift vicinity 41-03.0N 010-40.5E
- HYDROLANT 2211/01 · Incidents2001-08-11 → 2001-09-2820 meter S/V, eight persons on board, taking on water in 41-06N 010-43E
- HYDROLANT 2210/01 · Surveys2001-08-10 → 2001-08-14Survey operations in progress until further notice by M/V urania in area bound by 38-43.8N 014-36.1E,…
- HYDROLANT 2182/01 · Nav aids2001-08-07 → 2001-08-26Monte poro light 42-43N 010-14E unreliable
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.