Sea Ledger, June 2013

2013-06-01 to 2013-06-30 · archive

issued: 485
warning-days in force: 8,116
in force at month end: 264
sea × type cells: 221

baseline: same month, previous 5 years (2012-06, 2011-06, 2010-06, 2009-06, 2008-06)

By type

type	issued	warning-days	in force at end
Incidents	129	907.7	15
Cable ops	63	1,153.3	43
Exercises	63	627.2	21
Nav aids	46	2,052.7	72
Derelicts	45	157.5	6
Icebergs	31	35.7	2
Quakes	25	74	1
Missiles	18	202.8	8
Surveys	15	1,200	39
Other	12	381.1	13
Spills	8	145	3
Containers	7	15.7	1
Towing	5	27.6	1
Ordnance	5	78.3	3
Debris	4	10	0
Restricted	2	210.5	7
Wrecks	2	700	23
Structures	2	37.3	2
Piracy	2	7.2	0
Mines	1	2.4	1
War risk	0	60	2
Volcanic	0	30	1

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	34	207.4	7	97	1.4× / 24.6
Incidents · North Pacific Oceansurge	33	94.8	2	38	2.2× / 15.2
Icebergs · Labrador Seasurge	30	32.7	2	31	5.0× / 6
Incidents · Indian Oceansurge	24	54.5	1	52	4.8× / 5
Exercises · Yellow Seasurge	13	94	3	32	2.2× / 5.8
Incidents · North Atlantic Ocean	12	184.8	6	57	0.9× / 13.2
Derelicts · Indian Oceansurge	12	28.9	2	27	7.5× / 1.6
Nav aids · South Atlantic Oceanlong running	9	540.8	18	1,775	1.1× / 8
Incidents · Mediterranean Sea - Eastern Basinsurge	9	50.9	0	—	7.5× / 1.2
Incidents · South China Sea	8	109.3	0	—	1.5× / 5.2
Incidents · Coral Seasurge	8	5.8	0	—	3.3× / 2.4
Nav aids · North Sea	7	317.1	12	359	0.7× / 9.4
Exercises · Mediterranean Sea - Eastern Basinsurge	7	23.7	1	30	3.5× / 2
Missiles · North Pacific Ocean	6	49.4	5	61	0.9× / 7
Exercises · South Atlantic Ocean	6	29.4	2	29	1.1× / 5.2
Containers · Arabian Seasurge	6	12.7	1	10	30× / 0.2
Derelicts · Arabian Seasurge	6	9.1	0	—	6.0× / 1
Nav aids · Gulf of Mexicolong running	5	153.8	7	600	1.8× / 2.8
Derelicts · North Atlantic Oceansurge	5	26.4	1	52	3.6× / 1.4
Incidents · South Pacific Ocean	5	16.5	0	—	0.7× / 7
Quakes · Philippine Seasurge	5	14	1	28	4.2× / 1.2
Surveys · South Atlantic Oceansurge	4	215	7	158	3.3× / 1.2
Incidents · Caribbean Seasurge	4	77.5	4	54	5.0× / 0.8
Incidents · Bay of Bengalsurge	4	58.3	0	—	10× / 0.4
Exercises · North Pacific Ocean	4	46.4	1	49	0.3× / 11.6
Exercises · Bay of Bengal	4	43	2	60	0.9× / 4.4
Missiles · South Pacific Oceansurge	4	25.2	1	30	20× / 0.2
Towing · Barentsz Seanew	4	24.3	1	36	new / 0
Exercises · Philippine Sea	4	22.7	1	27	0.7× / 6
Incidents · Tasman Seasurge	4	18.3	1	26	2.9× / 1.4
Exercises · South Pacific Ocean	4	14.1	1	31	1.4× / 2.8
Quakes · South Pacific Ocean	4	12	0	—	0.4× / 10.2
Derelicts · North Pacific Ocean	4	9.1	0	—	1.4× / 2.8
Nav aids · North Atlantic Ocean	3	232.1	7	274	0.6× / 4.8
Cable ops · South China Sea	3	224.2	7	151	0.7× / 4.2
Cable ops · North Atlantic Ocean	3	93.3	4	118	0.6× / 5.2
Cable ops · North Sea	3	81	3	103	1.9× / 1.6
Exercises · Arabian Sea	3	43.8	1	33	1.4× / 2.2
Nav aids · North Pacific Ocean	3	39.9	2	206	0.9× / 3.2
Derelicts · South Pacific Oceanlong running	3	37	1	368	1.9× / 1.6
Nav aids · Irish Sea and St. George's Channel	3	34.4	1	60	0.9× / 3.2
Missiles · South Atlantic Oceansurge	3	21	0	—	3.8× / 0.8
Quakes · Solomon Sea	3	9	0	—	1.7× / 1.8
Derelicts · Adriatic Seanew	3	7.3	0	—	new / 0
Ordnance · Black Seasurge	3	4.3	1	4	15× / 0.2
Exercises · Bering Seasurge	3	3.7	0	—	2.5× / 1.2
Nav aids · Coral Sea	3	1.6	0	—	1.1× / 2.8
Cable ops · Gulf of Mexico	2	84.4	4	85	1.3× / 1.6
Surveys · Mediterranean Sea - Western Basin	2	71.2	1	55	5.0× / 0.4
Exercises · South China Sea	2	63.7	2	32	0.7× / 3
Other · South Atlantic Ocean	2	50.2	2	136	5.0× / 0.4
Surveys · Gulf of Mexico	2	49.6	3	88	5.0× / 0.4
Nav aids · Bass Strait	2	30.3	1	90	5.0× / 0.4
Spills · North Pacific Ocean	2	30	0	—	1.0× / 2
Nav aids · Indian Ocean	2	28.4	1	148	2.0× / 1
Missiles · North Atlantic Ocean	2	24	0	—	0.6× / 3.2
Incidents · Davis Straitnew	2	21.7	0	—	new / 0
Spills · Caribbean Sea	2	20	1	29	10× / 0.2
Incidents · South Atlantic Ocean	2	19.6	0	—	0.4× / 4.8
Cable ops · Celtic Sea	2	18.4	0	—	1.7× / 1.2
Derelicts · Gulf of Mexico	2	16.1	0	—	10× / 0.2
Cable ops · Barentsz Sea	2	11.4	2	9	2.5× / 0.8
Incidents · Arabian Sea	2	10.5	0	—	1.4× / 1.4
Missiles · Barentsz Sea	2	8.8	1	26	2.0× / 1
Cable ops · Caribbean Sea	2	8.6	1	27	5.0× / 0.4
Other · Mediterranean Sea - Eastern Basin	2	8	0	—	10× / 0.2
Surveys · North Atlantic Ocean	2	7.1	2	5	0.7× / 3
Other · South China Seanew	2	7	1	26	new / 0
Derelicts · Celtic Sea	2	6	0	—	10× / 0.2
Quakes · Indian Ocean	2	6	0	—	0.8× / 2.6
Quakes · Mediterranean Sea - Eastern Basin	2	6	0	—	3.3× / 0.6
Quakes · Molukka Sea	2	6	0	—	5.0× / 0.4
Debris · North Pacific Ocean	2	6	0	—	5.0× / 0.4
Quakes · North Pacific Ocean	2	6	0	—	0.3× / 7.4
Quakes · South Atlantic Ocean	2	6	0	—	1.3× / 1.6
Exercises · Indian Ocean	2	4.9	1	19	3.3× / 0.6
Exercises · Baltic Sea	2	4.8	1	27	0.9× / 2.2
Exercises · Black Sea	2	3.7	0	—	10× / 0.2
Other · Indian Ocean	2	2.9	0	—	3.3× / 0.6
Nav aids · Great Australian Bight	2	2.6	0	—	2.0× / 1
Cable ops · Norwegian Sea	1	175.1	6	93	0.5× / 2.2
Nav aids · Arabian Sealong running	1	95.9	3	751	0.8× / 1.2
Other · North Sea	1	92.2	3	291	0.8× / 1.2
Exercises · Aegean Sea	1	88.7	2	179	1.7× / 0.6
Nav aids · English Channellong running	1	60.4	2	451	0.3× / 3.2
Restricted · Black Sea	1	60	2	318	5.0× / 0.2
Surveys · Mediterranean Sea - Eastern Basin	1	49.7	1	32	0.6× / 1.6
Surveys · Black Sea	1	47.3	1	37	0.8× / 1.2
Surveys · Gulf of Suez	1	46.3	1	44	5.0× / 0.2
Cable ops · Black Sea	1	40	1	66	2.5× / 0.4
Nav aids · Gulf of California	1	39.1	2	46	2.5× / 0.4
Incidents · Tyrrhenian Sealong running	1	38.8	1	532	1.7× / 0.6
Nav aids · South Pacific Ocean	1	38.3	1	51	0.5× / 2
Structures · North Sealong running	1	36.5	2	685	5.0× / 0.2
Incidents · Gulf of Mexico	1	36.3	0	—	0.8× / 1.2
Ordnance · Inner Seas off the West Coast of Scotland	1	30	1	65	new / 0
Restricted · North Atlantic Ocean	1	30	1	184	2.5× / 0.4
Cable ops · Arabian Sea	1	29.4	1	56	1.0× / 1
Cable ops · Bay of Bengal	1	25.5	0	—	0.7× / 1.4
Cable ops · Sea of Okhotsk	1	25.5	1	25	2.5× / 0.4
Incidents · Mozambique Channel	1	22.4	0	—	1.7× / 0.6
Other · Persian Gulf	1	21.7	1	21	new / 0
Spills · North Atlantic Ocean	1	21	1	31	1.0× / 1
Incidents · Laccadive Sea	1	18.1	0	—	new / 0
Spills · Gulf of Mexico	1	16	0	—	0.3× / 3.6
Spills · Gulf of Alaska	1	14	0	—	5.0× / 0.2
Incidents · Labrador Sea	1	14	0	—	new / 0
Ordnance · Philippine Sea	1	14	0	—	1.3× / 0.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	new / 0
Cable ops · Indian Ocean	1	12.5	0	—	2.5× / 0.4
Incidents · Mediterranean Sea - Western Basin	1	10.9	0	—	2.5× / 0.4
Cable ops · Mediterranean Sea - Eastern Basin	1	10.2	1	51	0.6× / 1.6
Cable ops · Eastern China Sea	1	9.2	0	—	5.0× / 0.2
Wrecks · Gulf of Mexico	1	9.1	1	9	new / 0
Surveys · Philippine Sea	1	9	0	—	new / 0
Incidents · Banda Sea	1	8.8	0	—	new / 0
Other · English Channel	1	8.8	0	—	2.5× / 0.4
Exercises · Barentsz Sea	1	7	0	—	new / 0
Exercises · Andaman or Burma Sea	1	6.9	0	—	1.7× / 0.6
Incidents · Japan Sea	1	6.8	0	—	2.5× / 0.4
Missiles · Gulf of Guinea	1	6.2	0	—	new / 0
Exercises · North Sea	1	3.7	0	—	new / 0
Piracy · Red Sea	1	3.6	0	—	0.6× / 1.6
Exercises · Celtic Sea	1	3.4	1	3	new / 0
Towing · Black Sea	1	3.3	0	—	5.0× / 0.2
Incidents · Philippine Sea	1	3.3	0	—	0.3× / 3.2
Derelicts · Bay of Biscay	1	3.2	1	3	new / 0
Exercises · Coral Sea	1	3.2	0	—	1.7× / 0.6
Piracy · Gulf of Aden	1	3.1	0	—	0.6× / 1.6
Quakes · Bismarck Sea	1	3	0	—	1.3× / 0.8
Derelicts · Coral Sea	1	3	0	—	1.7× / 0.6
Quakes · Coral Sea	1	3	0	—	0.4× / 2.4
Derelicts · Japan Sea	1	3	0	—	new / 0
Derelicts · Mediterranean Sea - Eastern Basin	1	3	0	—	new / 0
Debris · North Atlantic Ocean	1	3	0	—	5.0× / 0.2
Quakes · North Atlantic Ocean	1	3	0	—	5.0× / 0.2
Containers · North Pacific Ocean	1	3	0	—	0.8× / 1.2
Derelicts · South Atlantic Ocean	1	3	0	—	1.7× / 0.6
Icebergs · South Atlantic Ocean	1	3	0	—	0.4× / 2.6
Cable ops · Tasman Sea	1	2.8	1	2	2.5× / 0.4
Other · The Northwestern Passages	1	2.8	0	—	new / 0
Incidents · Gulf of Guinea	1	2.7	0	—	5.0× / 0.2
Cable ops · Bristol Channel	1	2.6	0	—	new / 0
Nav aids · Persian Gulf	1	2.6	1	2	new / 0
Mines · Black Sea	1	2.4	1	2	new / 0
Nav aids · Arafura Sea	1	1.8	0	—	new / 0
Surveys · Tasman Sea	1	1.8	0	—	new / 0
Derelicts · South China Sea	1	1.6	0	—	1.3× / 0.8
Incidents · Celtic Sea	1	1.4	0	—	5.0× / 0.2
Cable ops · Gulf of Guinea	1	1.3	1	1	1.3× / 0.8
Exercises · Adriatic Sea	1	1.1	0	—	1.0× / 1
Debris · Gulf of Mexico	1	1	0	—	new / 0
Structures · Mediterranean Sea - Eastern Basin	1	0.8	0	—	new / 0
Nav aids · Bristol Channel	1	0.6	0	—	2.5× / 0.4
Derelicts · Laccadive Sea	1	0.6	0	—	new / 0
Wrecks · Tasman Sea	1	0.6	1	0	new / 0
Cable ops · Inner Seas off the West Coast of Scotland	1	0.5	0	—	5.0× / 0.2
Incidents · Java Sea	1	0.2	0	—	new / 0
Derelicts · The Northwestern Passages	1	0.2	1	0	new / 0
Surveys · Arctic Oceanlong running	0	240	8	979	— / 0
Surveys · Beaufort Sealong running	0	180	6	1,054	— / 0
Wrecks · South Atlantic Oceanlong running	0	120	4	1,145	— / 0
Wrecks · Arabian Sea	0	90	3	188	0.0× / 0.8
Wrecks · Persian Gulf	0	90	3	299	0.0× / 0.6
Nav aids · Sea of Okhotsklong running	0	67.5	2	558	0.0× / 1
Surveys · Arabian Sea	0	60	2	178	0.0× / 0.2
Nav aids · Caribbean Sea	0	60	2	219	0.0× / 0.2
Nav aids · Kara Sealong running	0	60	2	662	— / 0
War risk · Mediterranean Sea - Eastern Basinlong running	0	60	2	767	— / 0
Cable ops · Mozambique Channel	0	60	2	132	— / 0
Other · North Pacific Oceanlong running	0	60	2	440	0.0× / 0.6
Restricted · North Sealong running	0	60	2	678	0.0× / 0.4
Nav aids · South China Sealong running	0	60	2	685	0.0× / 0.2
Surveys · The Northwestern Passages	0	60	2	328	— / 0
Wrecks · The Northwestern Passageslong running	0	60	2	1,029	— / 0
Exercises · Laccadive Sea	0	57.5	1	122	0.0× / 3.6
Wrecks · Baltic Sea	0	44.4	1	163	— / 0
Other · North Atlantic Ocean	0	37.5	1	314	0.0× / 0.8
Nav aids · Bay of Bengal	0	35.5	1	74	0.0× / 0.2
Surveys · North Pacific Ocean	0	33	1	331	0.0× / 0.8
Missiles · Aegean Sea	0	30	1	179	— / 0
Nav aids · Andaman or Burma Sea	0	30	1	150	— / 0
Wrecks · Andaman or Burma Sea	0	30	1	159	— / 0
Cable ops · Arafura Sea	0	30	1	32	0.0× / 0.2
Surveys · Bering Sea	0	30	1	335	— / 0
Nav aids · Celtic Sea	0	30	1	248	0.0× / 0.8
Surveys · Chukchi Sea	0	30	1	209	— / 0
Wrecks · Coral Sea	0	30	1	97	0.0× / 0.2
Nav aids · Eastern China Sealong running	0	30	1	502	— / 0
Restricted · English Channel	0	30	1	38	— / 0
Other · Gulf of Mexico	0	30	1	51	0.0× / 0.6
Surveys · Indian Ocean	0	30	1	48	0.0× / 0.2
Wrecks · Indian Ocean	0	30	1	193	0.0× / 0.2
Nav aids · Inner Seas off the West Coast of Scotland	0	30	1	79	0.0× / 2.8
Exercises · Ionian Sea	0	30	1	179	— / 0
Nav aids · Laccadive Sea	0	30	1	65	0.0× / 0.8
Wrecks · Laccadive Sea	0	30	1	55	— / 0
Other · Mediterranean Sea - Western Basin	0	30	1	135	— / 0
Wrecks · North Atlantic Oceanlong running	0	30	1	631	0.0× / 0.2
Ordnance · North Sealong running	0	30	1	585	0.0× / 1

Cite: seahazards.com Sea Ledger, 2013-06, 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.