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 1216/00 · Exercises2000-04-06 → 2000-04-28Gunnery exercises 0700Z to 1530Z daily: a. 07, 10 thru 14, 17 thru 21 and 26 thru 28 apr in area bound by…
- HYDROLANT 1200/00 · Nav aids2000-04-05 → 2000-04-07Monte poro light 42-43.6N 010-14.2E unlit
- HYDROLANT 1123/00 · Ordnance2000-03-30 → 2000-04-03Underwater ordnance detonations 310700Z to 311600Z mar, alternate 030700Z to 031600Z apr in 41-18-30N…
- HYDROLANT 1064/00 · Exercises2000-03-24 → 2000-03-28Gunnery exercises 281000Z to 281600Z mar in area bound by 43-53N 009-46E, 43-53N 009-53E, 43-45N 009-53E,…
- HYDROLANT 1021/00 · Other2000-03-21 → 2000-03-24Pyrotechnics exercises 230700Z to 240700Z mar within one mile of 44-02N 009-49E
- HYDROLANT 999/00 · Ordnance2000-03-20 → 2000-03-23Underwater ordnance detonations 210700Z to 211600Z mar, alternate 220700Z to 221600Z and 230700Z to 231600Z…
- HYDROLANT 990/00 · Exercises2000-03-20 → 2000-03-24Gunnery exercises 241230Z to 241430Z mar within 20 miles of 40-04N 010-27E
- HYDROLANT 984/00 · Exercises2000-03-19 → 2000-03-21Gunnery exercises 0600Z to 1630Z daily 20 thru 24 mar in area bound by 40-38N 009-54E, 41-00N 010-45E,…
- HYDROLANT 942/00 · Nav aids2000-03-15 → 2000-06-23Scoglio d' affrica light 42-21.5N 010-03.9E unlit
- HYDROLANT 857/00 · Ordnance2000-03-08 → 2000-03-11Underwater ordnance detonations 090700Z to 091600Z mar, alternate 0700Z to 1600Z daily 10 and 11 mar…
- HYDROLANT 843/00 · Exercises2000-03-07 → 2000-03-07Gunnery exercises 070700Z to 071100Z mar within one mile of 42-57.5N 010-24.5E
- HYDROLANT 805/00 · Nav aids2000-03-04 → 2000-09-22Cape bonifati light 39-32.6N 015-53.1E unlit
- HYDROLANT 766/00 · Other2000-02-29 → 2000-03-0340 meter mooring line adrift vicinity 43-29.2N 010-00.8E
- HYDROLANT 762/00 · Ordnance2000-02-29 → 2000-03-02Underwater ordnance detonations 010700Z to 011600Z mar, alternate 020700Z to 021600Z mar in 41-18.5N 009-30.5E
- HYDROLANT 749/00 · Exercises2000-02-28 → 2000-03-24Gunnery exercises 0600Z to 1630Z daily 20 thru 24 mar in area bound by 40-38N 009-54E, 41-00N 010-45E,…
- HYDROLANT 748/00 · Exercises2000-02-28 → 2000-03-30Gunnery exercises 0600Z to 1630Z daily 15, 16, 22, 23, 29 and 30 mar in area bound by 40-15N 010-00E, 40-15N…
- HYDROLANT 747/00 · Exercises2000-02-28 → 2000-03-31Gunnery exercises 0600Z to 1630Z daily 01 thru 03, 06 thru 10, 13 thru 17, 20 thru 24 and 27 thru 31 mar in…
- HYDROLANT 707/00 · Nav aids2000-02-25 → 2000-04-27Viareggio light 43-51.4N 010-14.2E unlit
- HYDROLANT 705/00 · Exercises2000-02-25 → 2000-03-02Gunnery exercises 290700Z to 291300Z feb and 0700Z to 1700Z daily 01 and 02 mar in area bound by 43-53N…
- HYDROLANT 616/00 · Ordnance2000-02-18 → 2000-02-18Underwater ordnance detonations 190600Z to 191600Z feb, alternate 0600Z to 1600Z daily 20 and 21 feb in…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.