Sea Ledger, June 2019

2019-06-01 to 2019-06-30 · archive

issued: 648
warning-days in force: 10,384
in force at month end: 356
sea × type cells: 226

baseline: same month, previous 5 years (2018-06, 2017-06, 2016-06, 2015-06, 2014-06)

By type

type	issued	warning-days	in force at end
Incidents	116	804.2	39
Exercises	114	1,168.7	31
Icebergs	86	90.1	5
Surveys	79	2,247	77
Nav aids	78	2,638.8	93
Quakes	42	130.8	3
Missiles	27	283.3	8
Cable ops	27	325.9	13
Derelicts	24	111.4	4
Other	21	475.5	15
Spills	15	201	9
Wrecks	11	1,697.7	52
Restricted	4	96.4	4
Ordnance	2	44.7	1
Debris	1	6.7	0
Piracy	1	1.4	0
Structures	0	60	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · South Atlantic Oceansurge	42	41	2	30	3.4× / 12.4
Incidents · South China Sea	30	180.6	11	37	1.5× / 20
Surveys · South Atlantic Oceansurge	26	512.8	20	193	2.3× / 11.4
Surveys · North Atlantic Oceansurgelong running	22	503.7	14	591	2.4× / 9.2
Exercises · Mediterranean Sea - Eastern Basinsurge	20	139.5	5	241	4.3× / 4.6
Icebergs · Labrador Sea	20	22.9	2	19	1.1× / 18.8
Quakes · South Pacific Ocean	19	58.7	0	—	1.6× / 11.6
Incidents · North Pacific Ocean	17	94.6	4	28	0.6× / 29
Exercises · Philippine Seasurge	17	37.1	0	—	3.9× / 4.4
Nav aids · South Atlantic Oceansurge	16	695.3	27	183	2.4× / 6.6
Exercises · North Pacific Ocean	14	129.7	5	52	0.6× / 23.2
Icebergs · Southern Ocean	13	13	0	—	1.5× / 8.6
Exercises · Black Sea	12	146.3	7	124	1.6× / 7.4
Incidents · South Atlantic Ocean	12	41.2	2	24	1.4× / 8.6
Spills · Gulf of Mexico	10	136	5	41	1.3× / 7.6
Icebergs · North Atlantic Ocean	10	13.1	0	—	0.8× / 11.8
Nav aids · North Sea	8	167.2	4	157	0.8× / 9.6
Surveys · Sea of Okhotsksurge	8	161.8	9	163	4.0× / 2
Incidents · South Pacific Ocean	8	59.8	2	33	0.8× / 9.4
Exercises · South China Seasurge	8	48.2	0	—	2.2× / 3.6
Nav aids · Coral Sea	8	15.1	1	28	1.8× / 4.4
Exercises · Arabian Sea	7	56.6	3	31	1.8× / 3.8
Incidents · North Atlantic Ocean	6	58.5	6	35	0.3× / 19
Cable ops · North Atlantic Ocean	6	32.4	2	16	1.2× / 5
Missiles · North Atlantic Ocean	6	22.5	1	15	0.6× / 9.4
Nav aids · Gulf of Mexico	5	153.2	6	244	1.7× / 3
Nav aids · South Pacific Ocean	5	142.9	7	237	1.3× / 3.8
Nav aids · North Pacific Oceansurge	5	110.3	3	351	2.1× / 2.4
Exercises · Bay of Bengal	5	71.6	0	—	0.8× / 6
Cable ops · North Seasurge	5	42.3	1	50	2.8× / 1.8
Derelicts · South Pacific Oceansurge	5	38.3	2	122	4.2× / 1.2
Cable ops · Aegean Seasurge	5	13.2	0	—	25× / 0.2
Incidents · Indian Ocean	5	7.7	1	21	0.8× / 6.4
Other · North Pacific Oceansurge	5	5	1	39	4.2× / 1.2
Nav aids · Gulf of Alaskasurge	5	2.2	0	—	3.6× / 1.4
Missiles · Black Sea	4	101.4	4	32	1.5× / 2.6
Missiles · North Pacific Oceanlong running	4	50	2	471	0.5× / 7.4
Incidents · Philippine Sea	4	48.2	2	30	0.7× / 6.2
Exercises · South Atlantic Ocean	4	34.2	0	—	0.4× / 10
Nav aids · The Coastal Waters of Southeast Alaska and British Columbiasurge	4	30.5	0	—	3.3× / 1.2
Derelicts · Laccadive Seasurge	4	22.5	1	21	6.7× / 0.6
Exercises · Japan Seanew	4	19.6	0	—	new / 0
Incidents · Coral Sea	4	12.3	1	38	0.9× / 4.4
Derelicts · Arabian Seasurge	4	12	0	—	2.9× / 1.4
Nav aids · Timor Seasurge	4	7.8	0	—	4.0× / 1
Exercises · Aegean Sea	3	213.7	6	184	0.9× / 3.4
Surveys · Persian Gulfsurge	3	172.4	6	76	7.5× / 0.4
Cable ops · Persian Gulfsurge	3	78.6	3	76	5.0× / 0.6
Exercises · North Atlantic Ocean	3	65.6	0	—	0.6× / 5.4
Restricted · Persian Gulfnew	3	48.3	2	74	new / 0
Wrecks · South Atlantic Oceansurge	3	44.4	2	86	7.5× / 0.4
Spills · North Pacific Oceansurge	3	41	2	32	2.1× / 1.4
Missiles · Japan Seasurge	3	35.2	0	—	3.8× / 0.8
Incidents · Arabian Sea	3	34.3	0	—	1.1× / 2.6
Exercises · Gulf of Mexico	3	29.5	0	—	1.5× / 2
Exercises · South Pacific Ocean	3	23.6	0	—	1.4× / 2.2
Incidents · Gulf of Adensurge	3	20.6	2	10	15× / 0.2
Other · Beaufort Seanew	3	18.5	0	—	new / 0
Quakes · North Pacific Ocean	3	12.9	0	—	0.6× / 5.2
Quakes · Philippine Sea	3	10.8	1	30	1.7× / 1.8
Incidents · Caribbean Sea	3	10.1	3	9	0.5× / 6
Quakes · Banda Seasurge	3	9	0	—	15× / 0.2
Quakes · Bering Sea	3	9	0	—	1.5× / 2
Quakes · South Atlantic Ocean	3	7.2	1	17	1.7× / 1.8
Nav aids · Irish Sea and St. George's Channel	3	4.3	0	—	1.0× / 3
Nav aids · North Atlantic Ocean	2	357.8	12	234	0.4× / 4.6
Wrecks · North Atlantic Oceannewlong running	2	152	5	881	new / 0
Wrecks · North Sea	2	106.6	4	146	2.5× / 0.8
Surveys · Arabian Sea	2	92.4	1	60	2.5× / 0.8
Surveys · Black Sea	2	46.8	2	24	1.1× / 1.8
Nav aids · Inner Seas off the West Coast of Scotland	2	44.4	2	54	0.9× / 2.2
Ordnance · North Sea	2	43.9	1	32	0.4× / 5.4
Surveys · Gulf of Mexico	2	41.5	1	123	3.3× / 0.6
Cable ops · South China Sea	2	38.5	3	73	0.9× / 2.2
Incidents · Mediterranean Sea - Eastern Basin	2	36.7	1	41	0.1× / 26.8
Nav aids · Davis Strait	2	33	1	30	0.8× / 2.4
Exercises · Laccadive Sea	2	33	1	30	1.7× / 1.2
Surveys · Barentsz Sea	2	30.6	0	—	5.0× / 0.4
Missiles · South Pacific Ocean	2	27.4	0	—	3.3× / 0.6
Exercises · Yellow Sea	2	13.1	0	—	0.2× / 10
Surveys · Bay of Bengal	2	10.5	1	47	5.0× / 0.4
Derelicts · Indian Ocean	2	9.4	0	—	1.0× / 2
Surveys · Aegean Sea	2	8.8	0	—	2.0× / 1
Nav aids · Bay of Bengal	2	6.2	1	5	2.0× / 1
Quakes · Indian Ocean	2	6	0	—	0.9× / 2.2
Other · North Atlantic Ocean	2	5.8	1	5	1.1× / 1.8
Missiles · Arctic Ocean	2	5.5	0	—	10× / 0.2
Quakes · Coral Sea	2	5.2	1	11	0.9× / 2.2
Incidents · Bismarck Sea	2	4.7	0	—	5.0× / 0.4
Derelicts · South China Sea	2	4.5	0	—	2.0× / 1
Missiles · Barentsz Sea	2	3.5	0	—	0.3× / 6.4
Other · South Atlantic Ocean	2	1.4	0	—	3.3× / 0.6
Other · Davis Strait	2	0.2	0	—	2.5× / 0.8
Wrecks · South China Sea	1	368.5	13	174	0.7× / 1.4
Nav aids · Caribbean Sealong running	1	328	10	509	0.4× / 2.6
Surveys · Mediterranean Sea - Eastern Basin	1	123.5	5	61	0.3× / 3
Other · Arabian Sea	1	116.7	3	154	1.0× / 1
Wrecks · Arabian Sea	1	97.4	2	153	5.0× / 0.2
Surveys · Norwegian Sea	1	91.2	4	62	0.6× / 1.6
Surveys · Andaman or Burma Sea	1	76.4	3	48	2.5× / 0.4
Nav aids · Andaman or Burma Sea	1	73.6	3	65	1.3× / 0.8
Nav aids · Laccadive Sea	1	53.4	2	58	new / 0
Other · South China Sealong running	1	42.4	2	373	1.7× / 0.6
Surveys · South China Sea	1	39.4	0	—	0.5× / 2
Other · North Sea	1	30	1	47	0.8× / 1.2
Cable ops · North Pacific Ocean	1	29.2	1	29	5.0× / 0.2
Incidents · Japan Sea	1	28.5	0	—	2.5× / 0.4
Other · Persian Gulf	1	24.3	1	24	2.5× / 0.4
Exercises · Alboran Sea	1	22.5	0	—	2.5× / 0.4
Spills · North Atlantic Ocean	1	22	1	44	0.3× / 3.2
Wrecks · Great Australian Bight	1	20.5	1	20	new / 0
Incidents · Mozambique Channel	1	19.7	0	—	0.5× / 2.2
Incidents · Strait of Gibraltar	1	18.9	0	—	new / 0
Incidents · Laccadive Sea	1	17.9	0	—	2.5× / 0.4
Wrecks · Red Sea	1	15.4	1	15	new / 0
Incidents · Bering Sea	1	15.3	0	—	new / 0
Incidents · Gulf of Thailand	1	14.6	0	—	0.5× / 2
Incidents · Celebes Sea	1	14.4	0	—	5.0× / 0.2
Surveys · Indian Ocean	1	13.7	1	13	2.5× / 0.4
Surveys · Malacca Strait	1	12.6	1	12	new / 0
Exercises · Caribbean Sea	1	9.8	0	—	0.8× / 1.2
Cable ops · Mediterranean Sea - Eastern Basin	1	9.3	0	—	1.0× / 1
Incidents · Java Sea	1	7.5	0	—	0.6× / 1.8
Other · Black Sea	1	7.3	0	—	new / 0
Cable ops · Philippine Sea	1	7	0	—	new / 0
Nav aids · Malacca Strait	1	6.7	1	6	new / 0
Exercises · Kara Sea	1	6.5	1	6	new / 0
Incidents · Red Sea	1	6.5	1	6	new / 0
Incidents · Bay of Bengal	1	6.3	0	—	0.8× / 1.2
Cable ops · Inner Seas off the West Coast of Scotland	1	6.3	0	—	5.0× / 0.2
Incidents · Banda Sea	1	6.1	0	—	1.7× / 0.6
Missiles · Laccadive Sea	1	4.8	0	—	0.7× / 1.4
Restricted · Black Sea	1	4.6	1	4	2.5× / 0.4
Incidents · Solomon Sea	1	4.4	0	—	2.5× / 0.4
Exercises · Gulf of Thailand	1	4.1	0	—	2.5× / 0.4
Surveys · Mozambique Channel	1	3.9	0	—	new / 0
Exercises · Sea of Azov	1	3.4	1	3	new / 0
Incidents · Gulf of Mexico	1	3.3	1	3	0.2× / 4.2
Incidents · Tyrrhenian Sea	1	3.1	1	3	5.0× / 0.2
Debris · Bay of Bengal	1	3	0	—	new / 0
Quakes · Celebes Sea	1	3	0	—	new / 0
Derelicts · Coral Sea	1	3	0	—	1.7× / 0.6
Derelicts · English Channel	1	3	0	—	5.0× / 0.2
Derelicts · Gulf of Oman	1	3	0	—	new / 0
Derelicts · Japan Sea	1	3	0	—	5.0× / 0.2
Quakes · Japan Sea	1	3	0	—	new / 0
Other · Mediterranean Sea - Western Basin	1	3	0	—	5.0× / 0.2
Derelicts · North Atlantic Ocean	1	3	0	—	0.2× / 5.4
Quakes · Solomon Sea	1	3	0	—	1.7× / 0.6
Quakes · Southern Ocean	1	3	0	—	1.3× / 0.8
Derelicts · South Atlantic Ocean	1	2.7	0	—	0.6× / 1.8
Other · Celtic Sea	1	2.4	0	—	1.7× / 0.6
Derelicts · Alboran Sea	1	2.3	1	2	new / 0
Cable ops · Celtic Sea	1	2.2	1	2	0.7× / 1.4
Surveys · Kara Sea	1	2.2	1	2	5.0× / 0.2
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	2	1	2	2.5× / 0.4
Incidents · Celtic Sea	1	1.9	1	1	2.5× / 0.4
Cable ops · Coral Sea	1	1.9	1	1	new / 0
Missiles · Philippine Sea	1	1.9	0	—	1.7× / 0.6
Nav aids · Bering Sea	1	1.2	0	—	new / 0
Exercises · Indian Ocean	1	1	0	—	1.3× / 0.8
Missiles · Eastern China Sea	1	0.8	0	—	new / 0
Nav aids · Celtic Sea	1	0.6	0	—	0.7× / 1.4
Nav aids · English Channel	1	0.3	0	—	0.6× / 1.6
Missiles · South Atlantic Ocean	1	0.3	0	—	2.5× / 0.4
Icebergs · Barentsz Sea	1	0.1	1	0	1.0× / 1
Incidents · Bass Strait	1	0.1	0	—	new / 0
Incidents · Great Australian Bight	1	0.1	0	—	1.3× / 0.8
Exercises · Gulf of Oman	1	0.1	0	—	new / 0
Piracy · Gulf of Oman	1	0.1	0	—	5.0× / 0.2
Wrecks · Caribbean Sealong running	0	274.4	6	884	0.0× / 0.2
Wrecks · South Pacific Ocean	0	120	4	206	0.0× / 0.2
Other · Caribbean Sealong running	0	117	3	891	0.0× / 0.2
Nav aids · Mozambique Channel	0	90	3	115	— / 0
Nav aids · Philippine Sea	0	90	3	116	— / 0
Wrecks · Gulf of Mexicolong running	0	87	2	836	0.0× / 0.2
Wrecks · Indian Ocean	0	60	2	96	— / 0
Exercises · Ionian Sea	0	60	2	184	— / 0
Wrecks · North Pacific Oceanlong running	0	60	2	744	0.0× / 0.2
Surveys · Sea of Marmara	0	60	2	80	— / 0
Surveys · North Sea	0	55.8	1	38	0.0× / 5.8
Nav aids · Indian Ocean	0	44.8	1	96	0.0× / 2
Wrecks · Bay of Bengal	0	43.6	1	156	0.0× / 0.2
Nav aids · Aegean Sea	0	30	1	89	— / 0
Missiles · Aegean Sea	0	30	1	184	0.0× / 0.8
Nav aids · Arabian Sea	0	30	1	89	0.0× / 1.2
Nav aids · Bass Strait	0	30	1	95	0.0× / 0.6
Surveys · Bering Sea	0	30	1	86	0.0× / 0.2
Surveys · Gulf of Aden	0	30	1	76	— / 0
Wrecks · Gulf of California	0	30	1	257	— / 0
Surveys · Gulf of Guinea	0	30	1	58	0.0× / 0.4
Other · Gulf of Thailandlong running	0	30	1	473	— / 0
Other · Inner Seas off the West Coast of Scotland	0	30	1	54	— / 0
Other · Irish Sea and St. George's Channel	0	30	1	121	— / 0
Wrecks · Java Sea	0	30	1	97	— / 0
Wrecks · Kara Sea	0	30	1	142	— / 0
Wrecks · Laccadive Sea	0	30	1	118	0.0× / 0.2
Nav aids · Mediterranean Sea - Western Basin	0	30	1	150	0.0× / 0.4
Wrecks · Mediterranean Sea - Western Basin	0	30	1	208	— / 0
Nav aids · Persian Gulf	0	30	1	76	— / 0

Cite: seahazards.com Sea Ledger, 2019-06, retrieved 2026-09-03

Not for navigation. Warning-days = days each warning was in force within the month, summed. Only warnings we display are counted; the ratio compares warnings issued with the mean of the reference months.