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 2806/00 · Exercises2000-08-11 → 2000-08-11Gunnery exercises 161200Z to 161500Z aug within 20 miles of 39-03N 014-40E
- HYDROLANT 2784/00 · Surveys2000-08-09 → 2000-08-31Survey operations 11 thru 30 aug by M/V urania along trackline joining 41-10.6N 010-30.0E, 40-50.9N…
- HYDROLANT 2607/00 · Exercises2000-07-24 → 2000-07-25Gunnery exercises 251200Z to 251400Z jul within 15 miles of 39-15N 011-40E
- HYDROLANT 2606/00 · Nav aids2000-07-24 → 2001-01-05Three mooring buoys established in 42-29-09N 010-21-03E
- HYDROLANT 2571/00 · Cable ops2000-07-21 → 2000-07-26Cable laying operations 25 jul thru 01 aug by cableship certamen along trackline joining 41-35.9N 011-58.9E,…
- HYDROLANT 2553/00 · Exercises2000-07-20 → 2000-07-24Gunnery exercises 251100Z to 251300Z jul within 15 miles of 39-15N 011-40E
- HYDROLANT 2523/00 · Exercises2000-07-17 → 2000-07-22Gunnery exercises 221100Z to 221500Z jul within 25 miles of 41-32N 010-30E
- HYDROLANT 2518/00 · Exercises2000-07-17 → 2000-07-17Gunnery exercises 221300Z to 221700Z jul within 25 miles of 41-30N 010-30E
- HYDROLANT 2502/00 · Exercises2000-07-15 → 2000-07-21Gunnery exercises 211400Z to 211600Z jul within 20 miles of 41-00N 011-37E
- HYDROLANT 2498/00 · Exercises2000-07-15 → 2000-07-15Gunnery exercises 211300Z to 211500Z jul within 20 miles of 41-00N 011-37E
- HYDROLANT 2476/00 · Surveys2000-07-13 → 2000-08-11Survey operations 14 jul thru 10 aug aby M/V urania towing equipment within 500 meters of: a. 37-57N 011-40E
- HYDROLANT 2467/00 · Ordnance2000-07-13 → 2000-07-16Underwater ordnance detonations in progress until 15 jul vicinity 41-18.8N 009-30.0E
- HYDROLANT 2466/00 · Surveys2000-07-13 → 2000-08-01Hydrographic survey in progress until 31 jul by M/V vega along trackline joining 40-55.6N 009-36.7E,…
- HYDROLANT 2368/00 · Exercises2000-07-04 → 2000-07-09Gunnery exercises 091100Z to 091430Z jul within 20 miles of 40-15N 012-00E
- HYDROLANT 2306/00 · Exercises2000-06-29 → 2000-07-04Gunnery exercises 041700Z to 041900Z jul within 20 miles of 41-00N 011-00E
- HYDROLANT 2290/00 · Exercises2000-06-28 → 2000-06-30Hazardous operations 0600Z to 1600Z daily 29 and 30 jun within 1000 meters of 42-53N 010-20E
- HYDROLANT 2242/00 · Other2000-06-23 → 2000-06-27Pyrotechnics exercises 270700Z to 271200Z jun in area bound by 44-04.1N 009-53.4E, 44-03.4N 009-52.6E,…
- HYDROLANT 2123/00 · Ordnance2000-06-13 → 2000-06-16Ordnance detonation 150700Z to 151600Z jun, alternate 160700Z to 161600Z jun within 1000 meters of 41-18-30N…
- HYDROLANT 2025/00 · Ordnance2000-06-05 → 2000-06-08Underwater ordnance detonations 060700Z to 061600Z jun, alternate 070700Z to 071600Z and 080700Z to 081600Z…
- HYDROLANT 2000/00 · Exercises2000-06-02 → 2000-06-15Gunnery exercises 1100Z to 1930Z daily 02, 05 thru 09, 12 thru 15 jun in area bound by 40-00N 010-00E, 40-00…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.