Sea Ledger, June 2012

2012-06-01 to 2012-06-30 · archive

issued: 526
warning-days in force: 7,244
in force at month end: 258
sea × type cells: 210

baseline: same month, previous 5 years (2011-06, 2010-06, 2009-06, 2008-06, 2007-06)

By type

type	issued	warning-days	in force at end
Incidents	130	984.2	27
Exercises	81	812.8	27
Cable ops	67	893.1	35
Nav aids	54	1,485.6	58
Icebergs	40	62.6	2
Quakes	31	91.9	2
Surveys	30	1,089.2	43
Missiles	24	177.1	9
Derelicts	21	83.1	5
Piracy	10	58.6	2
Other	9	230.2	9
Wrecks	7	598.3	19
Spills	7	156	3
Debris	4	37	0
Towing	3	14.8	2
Restricted	3	222	8
Containers	3	9.8	0
Ordnance	2	79.4	2
Structures	0	30	1
Mines	0	30	1
Volcanic	0	38.4	1
War risk	0	60	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Incidents · North Pacific Oceansurge	35	157.1	9	51	3.5× / 10
Cable ops · South Atlantic Ocean	29	157	6	156	1.1× / 25.6
Icebergs · Labrador Seasurge	27	32.3	0	—	45× / 0.6
Incidents · North Atlantic Oceansurge	22	246.4	6	62	2.2× / 10.2
Nav aids · South Atlantic Oceansurgelong running	13	344.6	16	1,410	2.1× / 6.2
Incidents · South Pacific Oceansurge	12	139.7	3	44	2.1× / 5.8
Incidents · South China Seasurge	12	82.3	1	28	3.8× / 3.2
Nav aids · North Sea	11	217.3	8	226	1.2× / 9.2
Cable ops · North Atlantic Oceansurge	10	75.7	3	36	2.2× / 4.6
Incidents · Indian Oceansurge	10	11.5	0	—	2.8× / 3.6
Cable ops · South China Seasurge	9	193.1	7	92	3.5× / 2.6
Exercises · Philippine Seasurge	9	111.4	3	32	2.0× / 4.4
Missiles · North Atlantic Oceansurge	9	15.6	4	17	6.4× / 1.4
Exercises · Mediterranean Sea - Eastern Basinsurge	8	26.6	1	31	13× / 0.6
Quakes · South Pacific Ocean	8	24.4	1	32	0.8× / 9.8
Exercises · South Atlantic Ocean	7	37.3	1	45	1.4× / 5
Derelicts · North Pacific Oceansurge	7	15.9	1	22	5.0× / 1.4
Incidents · Coral Seasurge	7	10.7	0	—	7.0× / 1
Exercises · North Pacific Ocean	6	63.6	1	36	0.5× / 12
Missiles · North Pacific Ocean	6	58.7	1	61	0.9× / 6.6
Exercises · Sea of Okhotsknew	6	33.5	3	12	new / 0
Exercises · Japan Sea	6	28.1	3	9	0.8× / 7.6
Icebergs · South Atlantic Oceansurge	6	18	0	—	2.7× / 2.2
Exercises · Bay of Bengal	5	81.1	2	51	1.0× / 4.8
Incidents · South Atlantic Ocean	5	47.8	2	39	1.1× / 4.4
Exercises · North Atlantic Ocean	5	41.2	0	—	0.9× / 5.4
Exercises · Yellow Sea	5	37.8	1	36	1.0× / 5.2
Quakes · North Pacific Ocean	5	15	0	—	0.7× / 7
Cable ops · Norwegian Seasurge	4	121.2	2	70	2.9× / 1.4
Exercises · South China Sea	4	83.4	2	38	1.8× / 2.2
Surveys · Sea of Okhotsksurge	4	53.8	4	26	6.7× / 0.6
Exercises · Arabian Seasurge	4	53.2	2	38	2.2× / 1.8
Nav aids · Irish Sea and St. George's Channel	4	49.1	3	44	1.4× / 2.8
Cable ops · Barentsz Seanew	4	43.6	4	11	new / 0
Exercises · Baltic Sea	4	24.8	0	—	1.8× / 2.2
Incidents · Philippine Sea	4	14.8	0	—	0.9× / 4.2
Quakes · Indian Ocean	4	12	0	—	1.7× / 2.4
Icebergs · Davis Straitnew	4	5.2	2	10	new / 0
Surveys · South Atlantic Oceansurge	3	94.1	2	164	3.8× / 0.8
Incidents · Gulf of Mexicosurge	3	65.3	1	62	5.0× / 0.6
Surveys · Mediterranean Sea - Eastern Basin	3	60.5	3	154	1.5× / 2
Surveys · South China Seasurge	3	54.6	2	23	15× / 0.2
Other · North Seasurge	3	51.2	3	64	5.0× / 0.6
Spills · North Pacific Ocean	3	45	1	40	1.9× / 1.6
Surveys · North Atlantic Ocean	3	24	2	18	0.8× / 3.6
Surveys · Black Seasurge	3	23.8	1	33	5.0× / 0.6
Piracy · Arabian Seasurge	3	22.8	0	—	2.5× / 1.2
Piracy · Gulf of Adensurge	3	22.8	0	—	3.0× / 1
Surveys · English Channelsurge	3	16.6	1	24	3.0× / 1
Nav aids · Norwegian Seanew	3	11.4	0	—	new / 0
Derelicts · South Pacific Oceansurge	3	9.8	1	24	2.1× / 1.4
Quakes · Bering Seanew	3	9.1	0	—	new / 0
Quakes · Philippine Seasurge	3	9	0	—	3.0× / 1
Derelicts · Indian Ocean	3	8.9	0	—	1.9× / 1.6
Incidents · Caribbean Seasurge	3	6.4	1	28	15× / 0.2
Exercises · Coral Seanew	3	6.3	0	—	new / 0
Surveys · North Seasurge	3	6.2	1	21	5.0× / 0.6
Piracy · Gulf of Guineanew	3	4.4	2	29	new / 0
Nav aids · Tasman Seasurge	3	2.1	0	—	7.5× / 0.4
Nav aids · Great Australian Bightsurge	3	1.1	0	—	7.5× / 0.4
Incidents · Great Australian Bightsurge	3	0.5	0	—	7.5× / 0.4
Nav aids · North Atlantic Oceanlong running	2	123.3	4	760	0.4× / 5
Restricted · North Seanew	2	120	4	313	new / 0
Nav aids · English Channel	2	91.4	4	112	0.6× / 3.6
Nav aids · Celtic Sea	2	90	3	131	2.0× / 1
Incidents · Mozambique Channel	2	49.9	2	41	10× / 0.2
Nav aids · Coral Sea	2	32.3	1	33	0.7× / 2.8
Cable ops · Laccadive Sea	2	29.4	1	52	5.0× / 0.4
Missiles · Norwegian Seanew	2	28	1	17	new / 0
Cable ops · Sea of Okhotsk	2	27.2	2	23	5.0× / 0.4
Incidents · Ionian Sea	2	23.4	0	—	5.0× / 0.4
Missiles · South Atlantic Ocean	2	19.8	0	—	5.0× / 0.4
Exercises · South Pacific Ocean	2	16	2	31	0.7× / 2.8
Wrecks · English Channel	2	14.2	0	—	10× / 0.2
Wrecks · Irish Sea and St. George's Channel	2	11.5	1	11	10× / 0.2
Missiles · Black Sea	2	11.1	1	36	5.0× / 0.4
Missiles · Sea of Okhotsknew	2	8.9	1	6	new / 0
Derelicts · Coral Sea	2	6.9	0	—	10× / 0.2
Icebergs · Chukchi Seanew	2	6	0	—	new / 0
Containers · South China Seanew	2	6	0	—	new / 0
Debris · Indian Ocean	2	4.7	0	—	10× / 0.2
Exercises · Bering Sea	2	4.6	1	24	2.5× / 0.8
Quakes · South Atlantic Ocean	2	4.4	1	17	1.1× / 1.8
Incidents · Timor Sea	2	2.1	0	—	5.0× / 0.4
Derelicts · North Atlantic Ocean	2	1.1	1	28	0.8× / 2.4
Incidents · Hudson Baynew	2	0.4	0	—	new / 0
Ordnance · North Sealong running	1	65.4	2	1,338	1.0× / 1
Nav aids · Arabian Sealong running	1	63.1	3	694	1.0× / 1
Other · North Pacific Ocean	1	60.1	2	75	1.7× / 0.6
Nav aids · Sea of Okhotsk	1	56.5	2	193	1.0× / 1
Nav aids · Mediterranean Sea - Western Basin	1	56.3	2	316	new / 0
Wrecks · Arabian Sea	1	45.9	1	82	1.7× / 0.6
Spills · Gulf of Mexico	1	43	0	—	0.2× / 4.6
Cable ops · Gulf of Guinea	1	40.9	2	30	1.7× / 0.6
Cable ops · North Sea	1	35.2	2	48	0.6× / 1.8
Cable ops · Mediterranean Sea - Eastern Basin	1	33.7	1	31	0.6× / 1.6
Incidents · Tyrrhenian Sea	1	32.4	1	167	2.5× / 0.4
Cable ops · Arafura Sea	1	30	1	34	new / 0
Debris · South Pacific Ocean	1	29.3	0	—	new / 0
Nav aids · Inner Seas off the West Coast of Scotland	1	24.7	1	242	0.3× / 3.2
Wrecks · Indian Ocean	1	22.8	1	22	new / 0
Surveys · Gulf of Suez	1	21.3	0	—	new / 0
Incidents · Adriatic Sea	1	17.6	0	—	new / 0
Spills · Gulf of Alaska	1	14	0	—	new / 0
Spills · North Atlantic Ocean	1	14	0	—	0.6× / 1.6
Ordnance · Philippine Sea	1	14	0	—	1.7× / 0.6
Nav aids · Bay of Bengal	1	13.4	0	—	new / 0
Restricted · North Atlantic Ocean	1	12	1	12	1.7× / 0.6
Surveys · North Pacific Ocean	1	11.3	1	11	1.3× / 0.8
Incidents · Bering Sea	1	10.5	0	—	2.5× / 0.4
Spills · Caribbean Sea	1	10	1	10	new / 0
Surveys · Mediterranean Sea - Western Basin	1	9.4	1	9	5.0× / 0.2
Surveys · Celtic Sea	1	8.6	1	8	5.0× / 0.2
Piracy · Gulf of Oman	1	8.6	0	—	new / 0
Towing · Sea of Okhotsk	1	8.6	1	8	5.0× / 0.2
Other · Ionian Sea	1	8.5	0	—	new / 0
Incidents · Arabian Sea	1	8.4	0	—	0.7× / 1.4
Surveys · Gulf of Mexico	1	8.2	1	8	5.0× / 0.2
Other · South Atlantic Ocean	1	5.9	0	—	5.0× / 0.2
Towing · South Atlantic Ocean	1	5.2	1	5	5.0× / 0.2
Cable ops · Aegean Sea	1	5	1	4	new / 0
Missiles · Laccadive Sea	1	5	0	—	2.5× / 0.4
Cable ops · Philippine Sea	1	4.7	0	—	1.7× / 0.6
Exercises · Adriatic Sea	1	4.5	0	—	1.3× / 0.8
Exercises · Alboran Sea	1	4.2	0	—	5.0× / 0.2
Other · Caribbean Sea	1	4.2	1	4	new / 0
Exercises · Celebes Sea	1	3.7	1	3	new / 0
Nav aids · Bass Strait	1	3.4	0	—	1.3× / 0.8
Derelicts · South Atlantic Ocean	1	3.3	1	3	1.3× / 0.8
Derelicts · Celtic Sea	1	3	0	—	new / 0
Quakes · Java Sea	1	3	0	—	new / 0
Nav aids · Laccadive Sea	1	3	0	—	1.7× / 0.6
Quakes · Mediterranean Sea - Eastern Basin	1	3	0	—	2.5× / 0.4
Quakes · Molukka Sea	1	3	0	—	2.5× / 0.4
Debris · North Pacific Ocean	1	3	0	—	1.7× / 0.6
Derelicts · Philippine Sea	1	3	0	—	2.5× / 0.4
Quakes · Solomon Sea	1	3	0	—	0.5× / 2.2
Quakes · South China Sea	1	3	0	—	5.0× / 0.2
Quakes · Southern Ocean	1	3	0	—	2.5× / 0.4
Containers · Tasman Sea	1	3	0	—	new / 0
Cable ops · Kara Sea	1	2.4	1	2	new / 0
Incidents · Andaman or Burma Sea	1	2.2	1	2	new / 0
Exercises · Indian Ocean	1	1.7	0	—	1.7× / 0.6
Nav aids · Indian Ocean	1	1.6	0	—	1.3× / 0.8
Other · The Coastal Waters of Southeast Alaska and British Columbia	1	1.6	0	—	new / 0
Exercises · Andaman or Burma Sea	1	1.3	0	—	2.5× / 0.4
Derelicts · Tasman Sea	1	1.2	0	—	5.0× / 0.2
Icebergs · North Atlantic Ocean	1	1.1	0	—	0.6× / 1.6
Towing · Indian Ocean	1	1	0	—	new / 0
Other · Great Australian Bight	1	0.3	0	—	new / 0
Nav aids · South Pacific Ocean	1	0.3	1	0	0.4× / 2.4
Incidents · Tasman Sea	1	0.2	0	—	0.7× / 1.4
Wrecks · Coral Sea	1	0.1	0	—	new / 0
Surveys · Arctic Oceanlong running	0	300	10	729	— / 0
Surveys · Beaufort Sealong running	0	120	4	689	— / 0
Wrecks · The Northwestern Passageslong running	0	120	4	664	— / 0
Exercises · Aegean Sea	0	90	3	182	0.0× / 0.8
Nav aids · North Pacific Oceanlong running	0	90	3	412	0.0× / 3.2
Wrecks · South China Sealong running	0	90	3	593	— / 0
Surveys · Baffin Baylong running	0	60	2	729	— / 0
Nav aids · Gulf of Mexico	0	60	2	235	0.0× / 3
War risk · Mediterranean Sea - Eastern Basinlong running	0	60	2	402	— / 0
Wrecks · North Atlantic Ocean	0	60	2	316	0.0× / 0.2
Cable ops · Persian Gulf	0	60	2	163	0.0× / 1
Nav aids · South China Sea	0	60	2	320	0.0× / 0.2
Surveys · The Northwestern Passages	0	60	2	322	— / 0
Nav aids · Bristol Channel	0	30.7	1	143	0.0× / 0.4
Missiles · Aegean Sea	0	30	1	182	— / 0
Surveys · Bering Sealong running	0	30	1	686	— / 0
Surveys · Chukchi Sea	0	30	1	204	— / 0
Nav aids · Eastern China Sea	0	30	1	137	— / 0
Surveys · Greenland Sea	0	30	1	162	— / 0
Derelicts · Gulf of Oman	0	30	1	180	— / 0
Exercises · Ionian Sea	0	30	1	182	0.0× / 0.2
Nav aids · Kara Sea	0	30	1	297	— / 0
Mines · Kara Sea	0	30	1	183	— / 0
Surveys · Mozambique Channel	0	30	1	68	0.0× / 0.6
Structures · North Sea	0	30	1	320	0.0× / 0.2
Wrecks · North Sea	0	30	1	271	0.0× / 0.4
Other · Persian Gulf	0	30	1	293	— / 0
Restricted · Persian Gulflong running	0	30	1	576	— / 0
Surveys · Persian Gulflong running	0	30	1	416	— / 0
Wrecks · Persian Gulflong running	0	30	1	554	0.0× / 0.6
Volcanic · Philippine Sea	0	30	1	62	— / 0
Wrecks · Philippine Sea	0	30	1	47	— / 0
Restricted · Sea of Okhotsk	0	30	1	261	0.0× / 0.2
Wrecks · Sea of Okhotsk	0	30	1	200	— / 0
Spills · South Atlantic Ocean	0	30	1	232	— / 0
Restricted · South Atlantic Ocean	0	30	1	141	0.0× / 0.2
Wrecks · South Atlantic Oceanlong running	0	30	1	780	— / 0
Other · South China Sea	0	30	1	30	— / 0
Wrecks · South Pacific Oceanlong running	0	30	1	484	— / 0
Other · The Northwestern Passageslong running	0	30	1	700	— / 0
Wrecks · Yellow Sea	0	30	1	194	— / 0
Exercises · Laccadive Sea	0	28.5	0	—	0.0× / 4.4
Incidents · Gulf of Guinea	0	22.4	0	—	0.0× / 0.2
Wrecks · Mediterranean Sea - Eastern Basin	0	22.4	0	—	0.0× / 0.2
Cable ops · Makassar Strait	0	19	0	—	— / 0
Incidents · Bay of Bengal	0	15.4	0	—	0.0× / 0.8
Cable ops · Black Sea	0	15	0	—	0.0× / 0.4

Cite: seahazards.com Sea Ledger, 2012-06, 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.