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 1967/00 · Surveys2000-05-31 → 2000-07-11Survey operations in progress until 10 jul by M/V medma in areas bound by: a. 38-00.5N 012-19.4E, 38-00.5N…
- HYDROLANT 1886/00 · Ordnance2000-05-24 → 2000-06-01Underwater ordnance detonations 25 thru 31 may in areas bound by: a. 38-59.75N 009-09.05E, 39-06.75N…
- HYDROLANT 1818/00 · Nav aids2000-05-20 → 2000-05-21Alistro light 42-15.6N 009-32.5E unlit
- HYDROLANT 1763/00 · Ordnance2000-05-16 → 2000-05-18Underwater ordnance detonations 170700Z to 171600Z may, alternate 180700Z to 181600Z may vicinity 41-18.83N…
- HYDROLANT 1762/00 · Exercises2000-05-16 → 2000-05-17Gunnery exercises 170800Z to 171100Z may within six miles of 41-21N 009-59E
- HYDROLANT 1706/00 · Exercises2000-05-12 → 2000-05-18Gunnery exercises 0700Z to 1600Z daily 16 thru 18 may in area bound by 40-13.0N 014-00.0E, 40-13.0N…
- HYDROLANT 1705/00 · Surveys2000-05-12 → 2000-06-14Underwater operations 0600Z to 1800Z daily 16 may thru 14 jun by M/V alliance in area bound by 43-15.0N…
- HYDROLANT 1702/00 · Surveys2000-05-12 → 2000-06-03Underwater operations 15 may thru 02 jun in areas: a. bound by 38-49.87N 008-54.89E, 38-56.47N 009-03.53E,…
- HYDROLANT 1657/00 · Surveys2000-05-10 → 2000-05-10Underwater operations in progress until 101800Z may with submersible within 2000 yards of 42-42.92N 010-01.84E
- HYDROLANT 1645/00 · Surveys2000-05-09 → 2000-05-10Underwater operations 100600Z to 101800Z may with submersible within 2000 yards of 42-42.92N 010-01.84E
- HYDROLANT 1629/00 · Exercises2000-05-08 → 2000-05-31Gunnery exercises 0700Z to 1500Z daily 10 thru 31 may except saturdays and sundays in area bound by 40-00N…
- HYDROLANT 1584/00 · Nav aids2000-05-04 → 2000-12-15Isola razzoli light 41-18.4N 009-20.4E changed to: fl wr 2.5 sec 19 and 15 miles
- HYDROLANT 1564/00 · Exercises2000-05-03 → 2000-05-07Gunnery exercises: a. 040500Z to 040800Z may within 20 miles of 39-39N 014-31E
- HYDROLANT 1521/00 · Exercises2000-04-29 → 2000-05-03Gunnery exercises 040500Z to 040800Z within 20 miles of 39-39N 014-31E
- HYDROLANT 1494/00 · Exercises2000-04-27 → 2000-04-28Gunnery exercises 281200Z to 281500Z apr within 10 miles of 41-15N 011-20E
- HYDROLANT 1493/00 · Surveys2000-04-27 → 2000-05-12Survey operations in progress until 11 may by M/V medma in area bound by 38-16.5N 015-36.2E, 38-22.0N…
- HYDROLANT 1360/00 · Surveys2000-04-17 → 2000-04-19Underwater operations in progress until 262359Z apr by M/V castor II with submersible within two miles of…
- HYDROLANT 1280/00 · Surveys2000-04-11 → 2000-04-14Oceanographic operations in progress until 142159Z apr by M/V alliance towing equipment at a depth of 80…
- HYDROLANT 1272/00 · Nav aids2000-04-10 → 2000-04-13Capo comino light 40-31.5N 009-49.7E unlit
- HYDROLANT 1269/00 · Other2000-04-10 → 2000-04-13Pyrotechnics exercises 0700Z to 1400Z daily 11 and 13 apr in area bound by 44-04.1N 009-53.4E, 44-03.4N…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.