Baltic Sea
IHO sea area 1 · 10° to 24° E, 53° to 60° N
- in force
- 0
- last 12 months
- 1
- archive messages
- 365
- categories
- 13
What the archive shows
365 messages are recorded since 1999-12-03 for the Baltic 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.
Exercises accounts for 314 of 365 recorded messages (86%), 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
99
00
01
03
07
08
09
10
11
12
13
14
15
16
17
18
19
20
22
23
24
26
By month (all years)
J
F
M
A
M
J
J
A
S
O
N
D
By category · available archive
| Exercises | 314 | 86% |
| Surveys | 10 | 3% |
| Wrecks | 9 | 2% |
| Nav aids | 6 | 2% |
| Cable ops | 6 | 2% |
| Ordnance | 6 | 2% |
| Derelicts | 3 | 1% |
| Debris | 3 | 1% |
| Other | 3 | 1% |
| Restricted | 2 | 1% |
| Containers | 1 | 0% |
| Incidents | 1 | 0% |
| Towing | 1 | 0% |
Archive · 365 cancelled
- HYDROLANT 3054/18 · Exercises2018-09-27 → 2018-10-01Hazardous operations 011000Z to 011300Z oct in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 2711/18 · Exercises2018-08-24 → 2018-08-29Hazardous operations 280500Z to 291700Z in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 1372/18 · Exercises2018-05-01 → 2018-05-09Hazardous operations 060500Z to 091700Z may in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 1092/18 · Exercises2018-04-03 → 2018-04-05Hazardous operations 050800Z to 051200Z apr in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 831/18 · Exercises2018-03-09 → 2018-03-14Hazardous operations 0700Z to 1100Z daily 12 thru 14 mar in area bound by 55-37N 020-46E, 55-34N 021-00E,…
- HYDROLANT 604/18 · Exercises2018-02-20 → 2018-02-22Hazardous operations 0700Z to 1500Z daily 21 and 22 feb in area bound by 55-37N 020-46E, 55-34N 021-00E,…
- HYDROLANT 459/18 · Exercises2018-02-09 → 2018-02-13Hazardous operations 130700Z to 131200Z feb in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 319/18 · Containers2018-01-29 → 2018-02-01Seven containers adrift in 55-39.5N 020-40.8E at 282040Z jan
- HYDROLANT 239/18 · Exercises2018-01-22 → 2018-01-23Hazardous operations 231100Z to 231400Z jan in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 11/18 · Exercises2018-01-02 → 2018-01-04Hazardous operations 1100Z to 1400Z daily 03 and 04 jan in area bound by 55-37N 020-46E, 55-34N 021-00E,…
- HYDROLANT 3998/17 · Exercises2017-12-11 → 2017-12-13Hazardous operations 131100Z to 131400Z dec in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 3702/17 · Exercises2017-11-17 → 2017-11-22Hazardous operations 210900Z to 221100Z nov in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 3629/17 · Exercises2017-11-10 → 2017-11-14Hazardous operations 140800Z to 141300Z nov in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 3556/17 · Exercises2017-11-03 → 2017-11-07Hazardous operations 071100Z to 071300Z nov in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 3427/17 · Exercises2017-10-24 → 2017-10-26Hazardous operations 261000Z to 261300Z oct in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
- HYDROLANT 3304/17 · Exercises2017-10-16 → 2017-10-19Hazardous operations 0500Z to 1400Z daily 18 and 19 oct in area bound by 55-36.59N 020-45.53E, 55-38.08N…
- HYDROLANT 3242/17 · Exercises2017-10-11 → 2017-10-14Hazardous operations 140500Z to 141400Z oct in area bound by 55-36.59N 020-45.53E, 55-38.08N 021-09.00E,…
- HYDROLANT 3176/17 · Exercises2017-10-06 → 2017-10-11Hazardous operations 100300Z to 112000Z oct in area bound by 55-36.59N 020-45.53E, 55-38.08N 021-09.00E,…
- HYDROLANT 3058/17 · Surveys2017-09-27 → 2017-10-01Survey operations in progress until 302359Z sep by M/V mintis in area bound by 55-17.2N 020-57.2E, 55-17.7N…
- HYDROLANT 2959/17 · Exercises2017-09-22 → 2017-09-27Hazardous operations 271000Z to 271200Z sep in area bound by 55-37N 020-46E, 55-34N 021-00E, 55-25N 021-00E,…
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.