Warning trends

Navigational warnings issued in the last 90days, grouped by the type read from each warning's text. Counts cover warnings SeaLagom has analysed.

30 days 90 days 365 days

By type (11132 warnings)

Aids to navigation2446
Firing practice1353
Survey operations1073
Offshore operations1015
Military exercise539
Towing operations538
Drifting object511
Wreck / obstruction444
Restricted area397
Cancellation342
Navigational hazard327
Port / channel notice324
Cable / pipeline work283
Dredging / works270
Warnings in force259
Missile / rocket launch256
Ice report236
Other152
Space debris108
Search and rescue72
Rig positions71
Weather43
Piracy / security37
Distress29
Test / exercise message7

By severity

Critical174
High2698
Moderate4983
Low2582
Info695

By region

Region	Total	Aids to navigation	Firing practice	Survey operations	Offshore operations	Military exercise	Towing operations
HYDROPAC	453	41	13	54	126	12
JAPAN NAVTEX	358	42	165	1	6		16
NAVAREA II AVURNAV LOCAL TOULON	334	64	23	74	30	41
HYDROLANT	323	41		27	99	1	1
Denmark Coastal	315	81	197			1
South	313	114		9	50		24
St. Lawrence	281	65		6	9
NAVAREA II AVURNAV LOCAL BREST	279	99	58	36	5	8
Spain Coastal	265	77	29	19	6	8	2
Hellenic Navigational Warnings Navwarns	258	122	51	17	7	29
Maritimes	225	100	1	44	13	1
Portugal Coastal	225	27	18	14	4	18	3
East	217	25		9	82		33
NAVAREA VIII	207	11	87	33	3	6	1
Pacific Coast	201	80	4	15	20	12
Portugal Local	193	23	4	28	20	1	6
China Coastal Guangdong	190	5	13	28	44	5	80
Taiwan Coastal	184	22	44	23	17	35
China Coastal Shanghai	183	20			21		61
China Coastal Shandong	182	8		43	29	5	79
China Coastal Zhejiang	169	24	4	10	43	7	10
China Coastal Hebei	168	5	3	122	16	1	13
INDIA NAVTEX	168	11	73	30	4	12	1
Great Lakes	160	64	3	8	15	3	1
NAVAREA II AVURNAV LOCAL CHERBOURG	155	84		22	4	1
NAVAREA II AVURNAV TOULON	152	7	75	33	4	5	7
Baltic Area	151	47	18	2	1	45	1
NAVAREA IV	145	24		11	8	2
Russia Murmansk Coastal	134	15	31		1	4
NAVAREA IX	117	15	14	7	6	1	6
NAVAREA V	114	1		12	50		23
NAVAREA XII	110	7		2	36	2
NAVAREA II AVINAV CHERBOURG	99	63		9	3
Newfoundland	97	52		6	4
UK COASTAL	96	78	3	1			5
Amazon Basin	96	31			1		2
Bulgaria Coastal	93	3	12	7	1	28
NAVAREA XI	88	9	6		2
NAVAREA X	85	38		10	11		2
Argentina Coastal	83	12	11	8	20	4	3
Philippines Coastal	80	24		13	1	1
China Coastal Liaoning	78	11	3	11	2	19	23
China Coastal Tianjin	78	8		16	18	4	16
Canadian Arctic	77	23		29	12
Poland Coastal	77	5	3		1	62	2
Croatia Coastal	76	15		6	4	1
HYDROARC	75	6		4	17
Greece NAVTEX IRAKELIO	74	11	32	6	2	12
NAVAREA II AVINAV BREST	72	40		3	4
Local Japan Warnings 3rd RCG	68	23	14			5	1
NAVAREA XIX Coastal	63	48			1	1
Cyprus Coastal	62	7	17	9	1	5
NAVAREA II AVURNAV BREST	61	11	27	1		4
China Coastal Hainan	59	1	3			14	22
ANTALYA NAVTEX	57	3	22	9		8
NAVAREA VI	57
Estonia Coastal	56	12	16	5		3
Russia West Coastal	56	8		10	1
NAVAREA II	55	6	11	1			1
NAVAREA II AVIRADE BREST	55	1	5	24	6	6
Samsun NAVTEX	53	6	19	4	7	1
Istanbul NAVTEX	52	13	10	9	1	3
Local Japan Warnings 2nd RCG	51	6	10
Germany Coastal North Sea	50	10		1	17
South Korea Coastal	49		19	1		19
Chile Coastal Magallanes (Area E)	47	42
NAVAREA XVII	46	9		18	5
Russia East Coastal	45	7		1
Local Japan Warnings 8th RCG	45	4	14			5
Lithuania Coastal	45	14				6
Local Japan Warnings 7th RCG	43	15	9
Hong Kong Coastal	42			5	9
IZMIR NAVTEX	42	11	11	1	1	6
NAVAREA XVIII	40	11		11	4
Local Japan Warnings 11th RCG	40	18	6
China Coastal Lianyungang	40		4	3	18	2	3
Romania Coastal	40	2	11	2	2	3
Mackenzie	40	37
NAVAREA XV	39	18	1	1
Italy Coastal Ionian Sea and Central Mediterranean	39	3	9	4		13

By week

Week	Total	Aids to navigation	Firing practice	Survey operations	Offshore operations	Military exercise	Towing operations
2026-W46	746	138	101	83	72	31	46
2026-W45	1416	360	207	127	100	81	59
2026-W44	1476	309	185	107	111	89	76
2026-W43	1487	290	183	182	143	66	65
2026-W42	1254	227	129	111	125	79	77
2026-W41	1126	214	154	86	134	45	50
2026-W40	1362	256	207	130	113	55	52
2026-W39	840	161	87	93	101	53	62
2026-W38	444	126	36	56	49	12	33
2026-W37	277	108	19	38	17	7	8
2026-W36	265	103	11	27	15	4	4
2026-W35	264	79	24	19	19	12	5
2026-W34	154	60	9	14	15	5	1
2026-W33	21	15	1		1