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 1049/02 · Exercises2002-05-06 → 2002-05-09Gunnery exercises 0700Z to 1400Z daily 07 thru 09 may in area bound by 41-15N 009-55E, 41-15N 010-25E,…
- HYDROLANT 1043/02 · Other2002-05-05 → 2002-06-22Two men overboard from S/V freelance within 30 miles of 43-28N 009-50E
- HYDROLANT 1022/02 · Exercises2002-05-03 → 2002-05-31Gunnery exercises 0700Z to 1530Z daily: a. 02, 03, 06 thru 10, 13 thru 17, 20 thru 24 and 27 thru 31 may in…
- HYDROLANT 1001/02 · Exercises2002-04-30 → 2002-05-03Gunnery exercises 0700Z to 1530Z daily 02 thru 30 may, except saturdays and sundays, in area bound by 40-00N…
- HYDROLANT 781/02 · Exercises2002-04-05 → 2002-04-27Gunnery exercises 08 thru 12, 15 thru 19 and 22 thru 26 apr in area bound by 41-11.1N 009-28.8E, 41-11.5N…
- HYDROLANT 765/02 · Surveys2002-04-03 → 2002-04-20Underwater operations 04 thru 19 apr by M/V squalo in area bound by 41-26N 012-27E, 41-24N 012-41E, 41-20N…
- HYDROLANT 727/02 · Exercises2002-03-29 → 2002-04-30Gunnery exercises 0800Z to 1630Z daily: a. 02 thru 30 apr, except saturdays and sundays, in area bound by…
- HYDROLANT 685/02 · Incidents2002-03-25 → 2002-05-10Distress signal received in 39-38.6N 010-36.0E
- HYDROLANT 675/02 · Nav aids2002-03-24 → 2002-03-27Licosa light 40-15N 014-54E unlit
- HYDROLANT 619/02 · Incidents2002-03-16 → 2002-05-03Distress signal received in 39-21.4N 014-29.0E at 160816Z mar
- HYDROLANT 506/02 · Cable ops2002-03-04 → 2002-03-13Underwater pipeline operations 05 mar until further notice by M/V kommandor subsea along tracklines joining:…
- HYDROLANT 493/02 · Nav aids2002-03-02 → 2002-03-11Punta licosa light 40-15.0N 014-53.9E unlit
- HYDROLANT 491/02 · Derelicts2002-03-02 → 2002-03-09Vessel partially submerged and adrift in 38-11.5N 013-30.2E
- HYDROLANT 474/02 · Exercises2002-02-28 → 2002-03-29Gunnery exercises 0800Z to 1630Z daily: a. 01 thru 28 mar, except saturdays and sundays, in area bound by…
- HYDROLANT 418/02 · Nav aids2002-02-22 → 2002-02-22Capo zafferano light 38-06.7N 013-32.3E unlit
- HYDROLANT 400/02 · Exercises2002-02-19 → 2002-02-21Hazardous operations 0700Z to 1500Z daily 20 and 21 feb in area bound by 44-02.95N 009-56.90E, 44-02.20N…
- HYDROLANT 339/02 · Other2002-02-09 → 2002-02-18Geophysical operations 10 feb until further notice by M/V coopernaut franca in area bound by 40-34-23N…
- HYDROLANT 329/02 · Surveys2002-02-08 → 2002-02-09Underwater research operations 09 thru 28 feb by M/V alliance: a. along trackline between 42-48.65N…
- HYDROLANT 256/02 · Surveys2002-02-01 → 2002-02-01Underwater operations 040700Z to 082259Z feb in areas: a. between 44-08.0N 44-00.0N and 009-30.0E 009-50.0E
- HYDROLANT 252/02 · Surveys2002-02-01 → 2002-02-08Underwater research operations 04, 06, 08, 09 thru 11, 14 thru 19 and 22 thru 25 feb by M/V alliance in area…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.