Warning trends

Navigational warnings issued in the last 365days, grouped by the type read from each warning's text. Counts cover warnings SeaLagom has analysed.

30 days 90 days 365 days

By type (13330 warnings)

Aids to navigation3342
Firing practice1391
Survey operations1253
Offshore operations1188
Wreck / obstruction737
Drifting object556
Military exercise549
Towing operations544
Navigational hazard524
Restricted area491
Dredging / works393
Cancellation369
Port / channel notice342
Cable / pipeline work336
Warnings in force261
Missile / rocket launch257
Ice report238
Other169
Space debris109
Search and rescue78
Rig positions77
Weather47
Piracy / security42
Distress30
Test / exercise message7

By severity

Critical204
High2844
Moderate6051
Low3493
Info738

By region

Region	Total	Aids to navigation	Firing practice	Survey operations	Offshore operations	Wreck / obstruction	Drifting object
HYDROPAC	482	51	13	58	129	18	24
Great Lakes	445	111	3	24	21	153	10
St. Lawrence	416	96		25	17	141	10
Hellenic Navigational Warnings Navwarns	389	175	64	23	16	12	1
South	368	152		10	51	7	5
JAPAN NAVTEX	360	42	165	1	6	7	6
Maritimes	353	163	1	53	19	13	11
HYDROLANT	335	43		29	102	3	32
NAVAREA II AVURNAV LOCAL TOULON	334	64	23	74	30	35	37
Denmark Coastal	318	83	198			7	10
NAVAREA II AVURNAV LOCAL BREST	289	99	58	36	5	13	19
Pacific Coast	280	127	4	20	25	16	7
Spain Coastal	265	77	29	19	6	4	51
East	242	37		10	83	3	1
Portugal Coastal	225	27	18	14	4		21
China Coastal Guangdong	224	7	13	39	61	1	1
NAVAREA II AVINAV BREST	222	114		11	7	50	8
NAVAREA VIII	215	17	87	33	3	12	4
NAVAREA II AVURNAV LOCAL CHERBOURG	203	93		37	5	23	23
Portugal Local	198	23	4	28	20	1	2
NAVAREA IX	189	58	14	11	8	9	8
INDIA NAVTEX	189	16	81	34	4	9	2
China Coastal Shandong	186	9		44	30	1	4
Taiwan Coastal	184	22	44	23	17	7	11
China Coastal Shanghai	183	20			21	3	1
NAVAREA IV	182	39		20	13	8	4
Hong Kong Coastal	174	2		22	54
China Coastal Zhejiang	169	24	4	10	43	2
China Coastal Hebei	168	5	3	122	16	2	3
Russia Murmansk Coastal	154	26	31		3		1
NAVAREA II AVURNAV TOULON	152	7	75	33	4		9
Baltic Area	152	47	18	2	1	1	12
Newfoundland	151	84		11	14	4	14
Amazon Basin	151	68			1	20
NAVAREA V	125	3		15	53	2	12
Bulgaria Coastal	118	18	12	8	4		25
NAVAREA XII	114	9		2	36		1
NAVAREA II AVINAV CHERBOURG	110	68		9	3	6
UK COASTAL	96	78	3	1		5	1
China Coastal Tianjin	94	8		21	24	1
NAVAREA XI	93	11	6	2	2	2	4
NAVAREA X	93	40		13	12	1	1
Canadian Arctic	92	29		30	14	7	1
Argentina Coastal	90	13	12	8	21	2	2
Russia West Coastal	81	23		13	4	4	3
Cyprus Coastal	81	21	18	9	1	1	2
Philippines Coastal	80	24		13	1	5
China Coastal Liaoning	79	12	3	11	2	1	3
Greece NAVTEX IRAKELIO	78	12	34	6	2
Mackenzie	78	74					1
Middle East Gulf Coastal	77	28	1	11	3	3	1
Poland Coastal	77	5	3		1		3
Croatia Coastal	76	15		6	4	2
NAVAREA II AVINAV TOULON	76	41	1	3	3	20
HYDROARC	76	6		4	17	2	2
Local Japan Warnings 3rd RCG	71	24	14			3	6
Istanbul NAVTEX	70	28	10	9	2		4
Singapore Coastal	64			16	18
ANTALYA NAVTEX	63	8	22	9		1	1
NAVAREA XIX Coastal	63	48			1	2	4
NAVAREA II AVURNAV BREST	61	11	27	1		1	5
NAVAREA II	60	8	11	2		4	13
China Coastal Hainan	59	1	3			3	4
NAVAREA VI	58						1
Samsun NAVTEX	58	11	19	4	7		6
Estonia Coastal	57	13	16	5		4	2
Romania Coastal	55	4	15	3	3	3	9
NAVAREA II AVIRADE BREST	55	1	5	24	6	2	2
Ukraine Coastal	54	13				2	7
IZMIR NAVTEX	54	17	14	1	1		2
Germany Coastal North Sea	51	10		1	17	3	2
Local Japan Warnings 2nd RCG	51	6	10			1	10
South Korea Coastal	49		19	1			1
Local Japan Warnings 7th RCG	48	17	9			5	1
NAVAREA II AVURNAV LOCAL LA REUNION	48	30		1		3	3
NAVAREA XV	48	26	1	1			2
Local Japan Warnings 8th RCG	47	6	14				3
Chile Coastal Magallanes (Area E)	47	42				4	1
NAVAREA XVII	46	9		18	5	1
Lithuania Coastal	46	14

By week

Week	Total	Aids to navigation	Firing practice	Survey operations	Offshore operations	Wreck / obstruction	Drifting object
2026-W46	746	138	101	83	72	15	28
2026-W45	1416	360	207	127	100	49	73
2026-W44	1476	309	185	107	111	61	86
2026-W43	1487	290	183	182	143	54	82
2026-W42	1254	227	129	111	125	33	63
2026-W41	1126	214	154	86	134	32	63
2026-W40	1362	256	207	130	113	44	72
2026-W39	840	161	87	93	101	43	26
2026-W38	444	126	36	56	49	29	4
2026-W37	277	108	19	38	17	15	1
2026-W36	265	103	11	27	15	21	5
2026-W35	264	79	24	19	19	38	6
2026-W34	154	60	9	14	15	9	2
2026-W33	117	65	2	7	9	9
2026-W32	122	61		17	12	7	3
2026-W31	142	60	3	6	12	14	2
2026-W30	101	57	2	3	9	12
2026-W29	129	64	3	10	7	17	1
2026-W28	183	75	4	11	11	14	7
2026-W27	151	62	4	16	7	19	1
2026-W26	133	47	2	13	13	28	2
2026-W25	65	34		4	3	7	3
2026-W24	104	47		9	6	2	5
2026-W23	113	44		5	7	5	3
2026-W22	80	17		10	6	13
2026-W21	140	27	2	2	9	67	1
2026-W20	62	25	4	5	4	9	1
2026-W19	34	16		1	3	7	1
2026-W18	44	11		7	7	9	1
2026-W17	28	6		4	3	1
2026-W16	31	12		3	1	4	1
2026-W15	21	9	1		2	2
2026-W14	21	9	1	2	3	1
2026-W13	30	9	1	3	6	2
2026-W12	27	8		3	5	5	1
2026-W11	19	7		2	3	4
2026-W10	27	11		5	2	2
2026-W09	23	12			1		2
2026-W08	20	12		3	1		2
2026-W07	11	4		2
2026-W06	22	8		3		4	1
2026-W05	22	9		3	3	2
2026-W04	22	10		1		9
2026-W03	17	5	1		1	3	2
2026-W02	44	26		4	3	1	2
2026-W01	24	5	9	2	4	1
2025-W52	8	3		1	1		1
2025-W51	20	9		2	1	3	1
2025-W50	20	9		2	1	7
2025-W49	7	3		1		2	1
2025-W48	16	5		2	5	1
2025-W47	12	4		3	3	1
2025-W46	7	4		3