Warning trends

Navigational warnings issued in the last 30days, grouped by the type read from each warning's text. Counts cover warnings SeaLagom has analysed.

30 days 90 days 365 days

By type (6042 warnings)

Aids to navigation1269
Firing practice771
Survey operations585
Offshore operations525
Military exercise325
Drifting object309
Towing operations305
Cancellation228
Restricted area223
Wreck / obstruction203
Port / channel notice197
Navigational hazard150
Warnings in force149
Cable / pipeline work144
Ice report126
Missile / rocket launch111
Dredging / works109
Other89
Space debris72
Rig positions44
Search and rescue39
Weather27
Piracy / security23
Distress15
Test / exercise message4

By severity

Critical100
High1517
Moderate2629
Low1362
Info434

By region

Region	Total	Aids to navigation	Firing practice	Survey operations	Offshore operations	Military exercise	Drifting object
HYDROPAC	251	18	8	27	69	8	11
JAPAN NAVTEX	226	27	95	1	5		4
NAVAREA II AVURNAV LOCAL TOULON	187	39	15	53	11	13	27
HYDROLANT	178	26		16	43		24
Denmark Coastal	168	36	112				5
South	168	52		3	28		4
Portugal Coastal	160	21	13	9	3	14	16
NAVAREA II AVURNAV LOCAL BREST	157	63	40	17	1	3	11
Spain Coastal	148	34	18	11	3	6	26
St. Lawrence	139	38		5	8		3
Portugal Local	132	14	3	13	15	1	2
East	119	10		6	41		1
NAVAREA VIII	118	5	45	19	1	5	1
China Coastal Shanghai	111	14			14		1
INDIA NAVTEX	107	4	42	20	1	11	1
China Coastal Shandong	103	4		24	17	4	3
Pacific Coast	97	34	3	7	14	8	4
China Coastal Hebei	97	1	1	68	12		2
China Coastal Zhejiang	97	14	2	8	21	5
Maritimes	95	28		36	11		4
Hellenic Navigational Warnings Navwarns	87	43	19	10	1	9
China Coastal Guangdong	84	2	3	9	23	4	1
Great Lakes	83	35	1	2	8		2
NAVAREA II AVURNAV LOCAL CHERBOURG	78	54		3	2		8
Baltic Area	76	26	10		1	19	8
NAVAREA IV	76	13		6	5		3
Taiwan Coastal	69	9	12	9	4	17	4
NAVAREA II AVURNAV TOULON	69	4	34	14	3	1	4
NAVAREA IX	67	8	7	4	4		4
NAVAREA V	66			7	22		12
Bulgaria Coastal	64	1	8	5		23	17
UK COASTAL	60	52	1	1
Poland Coastal	55	3	1		1	44	3
NAVAREA X	52	24		6	7		1
China Coastal Liaoning	49	5	2	7	2	12	2
South Korea Coastal	49		19	1		19	1
Argentina Coastal	48	2	6	3	15	2
NAVAREA XII	47	4			13		1
Chile Coastal Magallanes (Area E)	47	42					1
NAVAREA XI	46	4	3		1		1
Newfoundland	43	27		3	2		3
Amazon Basin	41	8			1
Russia Murmansk Coastal	41	3	6			1
Greece NAVTEX IRAKELIO	41	5	17	6		5
NAVAREA XIX Coastal	40	27			1	1	3
ANTALYA NAVTEX	39	2	14	6		7
NAVAREA II AVURNAV BREST	39	10	18			2	5
Canadian Arctic	39	10		22	7
Italy Coastal Ionian Sea and Central Mediterranean	39	3	9	4		13	1
Italy Coastal Tyrrhenian Sea	39	9	10	5		1	1
Cyprus Coastal	38	5	11	6		5	1
Chile Coastal Puerto Montt (Area D)	38	32			1
China Coastal Tianjin	37	4		10	10	2
NAVAREA VI	36						1
Lithuania Coastal	36	12				6
NAVAREA II	36	5	6	1			9
China Coastal Hainan	36		1			9	3
NAVAREA XVII	36	4		18	5
NAVAREA II AVINAV CHERBOURG	35	18		5
Malaysia Coastal	35		1	10	17
Italy Coastal Ligurian Sea	34		11	4	2	13
Italy Coastal Adriatic Sea	34	11	5	4		2
Local Japan Warnings 2nd RCG	33	4	4				9
Croatia Coastal	32	6		1	2	1
Local Japan Warnings 3rd RCG	32	8	7			4	3
Local Japan Warnings 8th RCG	30	2	13			3	2
IZMIR NAVTEX	29	11	10			2
NAVAREA II AVINAV BREST	28	16		2	1
NAVAREA II AVIRADE BREST	28	1	3	11	4	3	2
Istanbul NAVTEX	28	7	6	3		2	1
HYDROARC	27	2		2	5
Local Japan Warnings 11th RCG	26	13	5				1
Estonia Coastal	26	2	7	2		3	2
Local Japan Warnings 7th RCG	25	6	8				1
New Zealand Coastal	23	13	3
Romania Coastal	23	1	6	1	1	2	3
China Coastal Fujian	23				3
Samsun NAVTEX	22	4	7		2		4
China Coastal Lianyungang	22		2	3	10	1
Finland Coastal	21	13	2

By week

Week	Total	Aids to navigation	Firing practice	Survey operations	Offshore operations	Military exercise	Drifting object
2026-W46	746	138	101	83	72	31	28
2026-W45	1416	360	207	127	100	81	73
2026-W44	1476	309	185	107	111	89	86
2026-W43	1487	290	183	182	143	66	82
2026-W42	917	172	95	86	99	58	40