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 1886/21 · Surveys2021-07-19 → 2021-09-16Survey operations in progress until 05 jul thru 15 sep
- HYDROLANT 1339/21 · Exercises2021-05-18 → 2021-05-19Hazardous operations 190600Z to 191800Z may in area within 25 miles of 41-43N 010-10E
- HYDROLANT 1302/21 · Nav aids2021-05-13 → 2021-05-14Lighthouse mannu cape 38-59-03N 009-01-13E unlit
- HYDROLANT 1297/21 · Surveys2021-05-12 → 2021-06-05Survey operations 15 may thru 30 sep by M/V astrea in: a. 43-51-01N 008-16-52E
- HYDROLANT 1202/21 · Surveys2021-05-01 → 2021-06-16Survey operations 02 may thru 15 jun along trackline joining 40-50-28N 012-52-58E, 40-52-59N 012-18-44E,…
- HYDROLANT 931/21 · Cable ops2021-04-05 → 2021-04-11Cable operations in progress until 14 apr by M/V rebecca along trackline joining 38-56.44N 010-50.23E,…
- HYDROLANT 283/21 · Surveys2021-01-31 → 2021-04-16Survey operations 01 feb thru 30 apr by M/V latlante in: a. along trackline joining 39-13.67N 010-40.94E,…
- HYDROLANT 3612/20 · Exercises2020-11-21 → 2020-11-25Hazardous operations 240400Z to 242359Z nov in area bound by 39-02.0N 009-10.0E, 39-07.0N 009-35.0E,…
- HYDROLANT 3334/20 · Exercises2020-10-30 → 2020-11-01Hazardous operations in progress until 312359Z oct 20 in area bound by 38-00N 009-00E, 39-05N 009-30E,…
- HYDROLANT 2884/20 · Incidents2020-09-22 → 2020-10-09Man overboard from M/V moby wonder in vicinity 41-00N 011-00E
- HYDROLANT 2838/20 · Incidents2020-09-17 → 2020-10-02S/V chiara taking on water in vicinity 42-22-36N 010-18-12E
- HYDROLANT 2789/20 · Incidents2020-09-12 → 2020-10-02Distress signal received from 35 meter M/V fortuna, white hull, in 40-26N 010-57E at 120009Z sep
- HYDROLANT 1654/20 · Surveys2020-05-15 → 2020-06-01Underwater operations 16 thru 31 may along trackline joining 43-24.77N 007-54.03E, 43-27.27N 007-57.26E,…
- HYDROLANT 1282/20 · Surveys2020-04-10 → 2020-05-16Survey operations in progress until 15 may by NR2 saildrones along trackline joining 43-24.8N 007-54.0E,…
- HYDROLANT 1041/20 · Nav aids2020-03-19 → 2020-03-21Mrcc rome (41-37N 012-29E) radio frequencies 490 khz thru 518 khz inoperative 200600Z to 201400Z mar
- HYDROLANT 769/20 · Surveys2020-02-29 → 2020-03-21Survey operations 010001Z mar to 152359Z apr by M/V porquoi pas in: a. vicinity of trackline joining…
- HYDROLANT 764/20 · Surveys2020-02-29 → 2020-02-29Survey operations 010001Z mar to 152359Z apr by M/V porquoi pas in area bound by 39-11.3N 009-44.3E,…
- HYDROLANT 719/20 · Exercises2020-02-27 → 2020-04-16Gunnery exercises 010001Z mar to 152359Z apr in area bound by 39-11.3N 009-44.3E, 39-11.6N 010-00.3E,…
- HYDROLANT 3893/19 · Derelicts2019-12-19 → 2019-12-22Derelict M/V lira adrift in vicinity 41-14.5N 010-07.4E at 190500Z dec
- HYDROLANT 3881/19 · Derelicts2019-12-18 → 2019-12-19Derelict M/V lira adrift in vicinity 40-57.8N 010-38.1E at 180340Z dec
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.