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 563/00 · Other2000-02-14 → 2000-02-16Pyrotechnics exercises 161700Z to 161900Z feb in 43-48N 009-50E
- HYDROLANT 373/00 · Exercises2000-02-01 → 2000-02-25Gunnery exercises 0600Z to 1630Z daily 22 thru 25 feb in area bound by 40-38N 009-54E, 41-00N 010-45E,…
- HYDROLANT 372/00 · Exercises2000-02-01 → 2000-02-18Gunnery exercises 0600Z to 1630Z daily 14 thru 18 feb in ara bound by 40-40N 009-50E, 40-40N 010-50E, 39-20N…
- HYDROLANT 371/00 · Exercises2000-01-31 → 2000-02-25Gunnery exercises 0600Z to 1630Z daily 22 thru 25 feb in area bound by 40-15N 010-00E, 40-15N 011-50E,…
- HYDROLANT 370/00 · Exercises2000-01-31 → 2000-02-29Gunnery exercises 0600Z to 1630Z daily 01 thru 04, 07 thru 11, 14 thru 18, 21 thru 25, 28 and 29 feb in area…
- HYDROLANT 215/00 · Nav aids2000-01-21 → 2000-01-26Giannutri island light 42-14.3N 011-06.5E unlit
- HYDROLANT 214/00 · Ordnance2000-01-20 → 2000-01-21Underwater ordnance detonations 210900Z to 211100Z jan in 41-18.3N 009-30.3E
- HYDROLANT 200/00 · Surveys2000-01-19 → 2000-02-01Survey operations in progress until 31 jan by M/V urania towing equipment at a depth of 600 meters along…
- HYDROLANT 140/00 · Nav aids2000-01-14 → 2000-01-23Isola palmaiola light 42-51.9N 010-28.5E unlit
- HYDROLANT 139/00 · Surveys2000-01-14 → 2000-01-19Hydrographic survey 18 thru 31 jan by M/V urania towing equipment at a depth of 600 meters along trackline…
- HYDROLANT 138/00 · Exercises2000-01-14 → 2000-01-20Gunnery exercises 0700Z to 1700Z daily 18 thru 20 jan in area bound by 43-53N 009-46E, 43-53N 009-53E,…
- HYDROLANT 100/00 · Ordnance2000-01-11 → 2000-01-13Underwater ordnance detonations in progress until 111600Z jan, alternate 0600Z to 1600Z daily 12 and 13 jan…
- HYDROLANT 92/00 · Ordnance2000-01-10 → 2000-01-11Underwater ordnance detonations 110600Z to 111600Z jan in 41-17.2N 009-30.6E
- HYDROLANT 74/00 · Exercises2000-01-08 → 2000-01-31Gunnery exercises 0800Z to 1430Z daily 10 thru 14, 17 thru 21, 24 thru 28 and 31 jan
- HYDROLANT 73/00 · Exercises2000-01-08 → 2000-01-13Gunnery exercises 0700Z to 1700Z daily 11 thru 13 jan in area bound by 43-57N 009-46E, 43-53N 009-53E,…
- HYDROLANT 23/00 · Nav aids2000-01-03 → 2000-01-07Cap pertusato light 41-22N 009-11E unreliable
- HYDROLANT 2795/99 · Nav aids1999-12-24 → 2000-01-25Radiobeacon at monte cappuccini light 42-05.8N 011-49.1E off air
- HYDROLANT 2751/99 · Nav aids1999-12-17 → 2000-02-03Scoglio de africa light 42-21.4N 010-03.9E unlit
- HYDROLANT 2741/99 · Nav aids1999-12-16 → 1999-12-29Iles lavezzi beacon 41-20.0N 009-15.5E unlit
- HYDROLANT 2708/99 · Ordnance1999-12-13 → 1999-12-17Underwater ordnance detonations 0500Z to 0700Z daily 15 thru 17 dec within 300 meters of 44-02.8N 009-51.4E
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.