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 1455/04 · Surveys2004-09-06 → 2004-09-11Oceanographic survey in progress until 10 sep by M/V professor logachev along tracklines between: a. 39-43N…
- HYDROLANT 1356/04 · Derelicts2004-08-16 → 2004-08-23Derelict 24 meter M/V giga adrift in 41-15.5N 010-00.0E
- HYDROLANT 1346/04 · Towing2004-08-13 → 2004-08-17Geophysical operations in progress until 16 aug by M/V maersk defender towing 1000 meter long cable vicinity…
- HYDROLANT 1345/04 · Nav aids2004-08-13 → 2004-09-01Punta coda sardegna light 41-12.4N 009-21.8E unlit
- HYDROLANT 1326/04 · Towing2004-08-10 → 2004-08-13Geophysical operations in progress until 15 aug by M/V maersk defender towing 1000 meter long cable in…
- HYDROLANT 1310/04 · Surveys2004-08-06 → 2004-08-10Oceanographic operations 06 thru 10 aug by M/V le suroit vicinity 40-12N 011-15E
- HYDROLANT 1300/04 · Surveys2004-08-05 → 2004-08-21Survey operations 05 thru 20 aug by M/V universitatis along trackline joining 38-56.4N 015-04.4E, 38-51.6N…
- HYDROLANT 1268/04 · Surveys2004-07-31 → 2004-08-11Survey operations 06 thru 10 aug by M/V le suroit in 40-20N 011-30E
- HYDROLANT 1265/04 · Surveys2004-07-31 → 2004-08-21Oceanographic operations 02 thru 23 aug by M/V urania along tracklines between: a. 40-28.8N 014-39.1E and…
- HYDROLANT 1170/04 · Exercises2004-07-12 → 2004-07-13Gunnery exercises 131900Z to 132200Z jul within 15 miles of 39-30N 015-00E
- HYDROLANT 1165/04 · Derelicts2004-07-10 → 2004-07-11Derelict 13 meter M/V torry gaucy, brown hull, partially submerged adrift in 38-34-05N 011-06-04E
- HYDROLANT 1130/04 · Surveys2004-07-05 → 2004-09-01Oceanographic operations in progress until further notice by M/V professor logachev towing equipment along…
- HYDROLANT 1112/04 · Towing2004-07-02 → 2004-07-08Geophysical operations in progress until further notice by M/V maersk defender towing 1000 meter long cable…
- HYDROLANT 1091/04 · Incidents2004-06-29 → 2004-06-29M/V tolida II, white hull, three persons on board, broken engine in 41-15.6N 011-07.2E at 290800Z jun
- HYDROLANT 1089/04 · Incidents2004-06-29 → 2004-08-11Distress signal received on 121.5 mhz in 41-19.3N 011-05.6E
- HYDROLANT 993/04 · Surveys2004-06-08 → 2004-06-11Survey operations by M/V certamen 090800Z to 122200Z jun towing equipment along trackline between 38-19N…
- HYDROLANT 987/04 · Other2004-06-07 → 2004-06-1475 meter long cable with parachute adrift vicinity capo san lorenzo (39-30N 009-40E)
- HYDROLANT 956/04 · Nav aids2004-06-03 → 2004-06-07Capo zafferano light 38-06.6N 013-32.5E unlit
- HYDROLANT 929/04 · Exercises2004-05-29 → 2004-06-18Hazardous operations: a. 0600Z to 1800Z daily 01, 03, 04, 07 thru 11, and 14 thru 18 jun in area bound by…
- HYDROLANT 917/04 · Nav aids2004-05-27 → 2004-05-28Capo zafferano light 38-06.6N 013-32.5E unlit
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.