Sea Ledger, June 2009

2009-06-01 to 2009-06-30 · archive

issued: 313
warning-days in force: 7,378
in force at month end: 249
sea × type cells: 169

baseline: same month, previous 5 years (2008-06, 2007-06, 2006-06, 2005-06, 2004-06)

By type

type	issued	warning-days	in force at end
Exercises	69	677.8	23
Cable ops	60	755.7	28
Incidents	52	776.6	26
Nav aids	41	1,420	51
Quakes	31	94.8	1
Surveys	15	2,260.6	76
Icebergs	11	43.5	0
Spills	7	95	4
Missiles	5	60	2
Piracy	5	57.9	4
Other	4	378.7	12
Derelicts	3	21.4	0
Debris	3	37.1	2
Restricted	3	55	1
Wrecks	2	390	12
Structures	1	74.4	2
Containers	1	6.1	0
Volcanic	0	90	3
Ordnance	0	83.6	2

By sea and type · 169 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Oceansurge	32	226.4	8	234	2.4× / 13.2
Incidents · North Atlantic Oceansurge	17	165.6	3	56	3.9× / 4.4
Exercises · North Pacific Ocean	13	89.3	3	34	1.5× / 8.6
Nav aids · South Atlantic Oceansurgelong running	12	278	11	588	3.3× / 3.6
Exercises · North Atlantic Ocean	10	68	4	47	1.6× / 6.4
Exercises · Japan Sea	9	70.8	2	34	2.0× / 4.6
Incidents · North Pacific Ocean	7	122.1	5	58	0.8× / 8.2
Exercises · Yellow Seasurge	7	61.6	2	34	2.3× / 3
Quakes · South Pacific Ocean	7	21	0	—	0.8× / 8.6
Exercises · Philippine Seasurge	6	76.2	2	26	4.3× / 1.4
Icebergs · Southern Oceansurge	6	38.8	0	—	3.3× / 1.8
Incidents · South Atlantic Ocean	6	28.7	2	30	1.9× / 3.2
Quakes · Coral Seasurge	6	18.3	0	—	3.8× / 1.6
Quakes · North Pacific Ocean	6	18	0	—	1.0× / 5.8
Nav aids · North Sea	5	259.6	9	325	0.7× / 7.4
Incidents · South Pacific Ocean	5	78.6	4	43	0.9× / 5.8
Missiles · North Pacific Ocean	5	60	2	30	0.9× / 5.4
Icebergs · North Atlantic Oceansurge	5	4.7	0	—	13× / 0.4
Exercises · Laccadive Sea	4	48.5	2	33	0.7× / 6
Spills · Gulf of Mexico	4	48	3	40	0.9× / 4.2
Surveys · Irish Sea and St. George's Channelsurge	4	45.8	2	32	20× / 0.2
Exercises · Bay of Bengal	4	24.9	2	30	0.6× / 6.6
Exercises · South Atlantic Ocean	4	23.9	1	38	1.1× / 3.6
Nav aids · North Atlantic Ocean	3	122	5	332	0.9× / 3.4
Cable ops · Arabian Seasurge	3	89.1	2	117	3.8× / 0.8
Incidents · Indian Ocean	3	82.4	3	63	1.1× / 2.6
Cable ops · Mediterranean Sea - Western Basinsurge	3	43	1	56	3.8× / 0.8
Cable ops · North Atlantic Ocean	3	18.5	2	9	0.8× / 3.6
Exercises · South Pacific Ocean	3	13.2	0	—	1.5× / 2
Piracy · South China Seasurge	3	12.9	3	32	15× / 0.2
Incidents · South China Sea	2	78.1	1	52	1.4× / 1.4
Incidents · Arabian Sea	2	58.3	1	62	1.4× / 1.4
Cable ops · Norwegian Sea	2	54	2	59	2.5× / 0.8
Nav aids · English Channel	2	50	2	111	0.7× / 3
Cable ops · South China Sea	2	46.3	2	65	2.5× / 0.8
Cable ops · Gulf of Mexico	2	43.3	3	189	2.0× / 1
Incidents · Bay of Bengal	2	40.1	3	37	3.3× / 0.6
Cable ops · Indian Ocean	2	39	1	37	10× / 0.2
Nav aids · Indian Oceanlong running	2	34.9	2	460	1.3× / 1.6
Nav aids · Inner Seas off the West Coast of Scotland	2	34.9	1	200	0.5× / 3.8
Nav aids · Irish Sea and St. George's Channel	2	33.6	1	254	0.8× / 2.4
Cable ops · Laccadive Sea	2	29	1	33	3.3× / 0.6
Surveys · Sea of Okhotsk	2	27.7	2	26	5.0× / 0.4
Nav aids · Arabian Sea	2	26	1	26	2.5× / 0.8
Incidents · Mediterranean Sea - Western Basinnew	2	24.8	1	24	new / 0
Spills · North Pacific Ocean	2	24	1	22	1.4× / 1.4
Restricted · Japan Seanew	2	22.7	0	—	new / 0
Surveys · North Atlantic Ocean	2	22.3	1	24	0.8× / 2.4
Surveys · Inner Seas off the West Coast of Scotlandnew	2	18.2	1	38	new / 0
Cable ops · English Channel	2	8.5	0	—	1.4× / 1.4
Quakes · Philippine Sea	2	6.8	0	—	5.0× / 0.4
Quakes · Indian Ocean	2	6	0	—	0.8× / 2.6
Quakes · South Atlantic Ocean	2	6	0	—	1.7× / 1.2
Exercises · Gulf of Mexico	2	3.6	0	—	10× / 0.2
Nav aids · Gulf of Suezlong running	1	97	3	424	5.0× / 0.2
Other · Indian Oceanlong running	1	88.2	3	377	2.5× / 0.4
Wrecks · Inner Seas off the West Coast of Scotland	1	60	2	193	new / 0
Surveys · North Sea	1	50.7	1	33	1.3× / 0.8
Nav aids · Sea of Okhotsk	1	47.6	2	169	1.7× / 0.6
Surveys · Mediterranean Sea - Eastern Basin	1	41.4	2	208	0.4× / 2.6
Surveys · Gulf of Guinea	1	35.4	2	138	new / 0
Exercises · South China Sea	1	33.8	1	34	2.5× / 0.4
Restricted · North Atlantic Ocean	1	32.3	1	61	2.5× / 0.4
Nav aids · South Pacific Ocean	1	29.5	1	41	0.5× / 2.2
Nav aids · North Pacific Ocean	1	29.3	1	29	1.7× / 0.6
Incidents · Bay of Biscay	1	23.9	1	23	new / 0
Cable ops · Bay of Bengal	1	23.3	0	—	1.0× / 1
Surveys · Black Sea	1	22.3	1	22	new / 0
Incidents · Japan Sea	1	19.5	0	—	5.0× / 0.2
Cable ops · Gulf of Suez	1	19	0	—	1.3× / 0.8
Structures · North Sea	1	18	1	17	1.7× / 0.6
Exercises · Arabian Sea	1	17.7	0	—	0.6× / 1.8
Spills · South Pacific Ocean	1	14	0	—	new / 0
Cable ops · Inner Seas off the West Coast of Scotland	1	12.3	1	12	new / 0
Wrecks · Irish Sea and St. George's Channel	1	10.6	0	—	5.0× / 0.2
Piracy · Gulf of Aden	1	10.2	0	—	new / 0
Nav aids · Great Australian Bight	1	9.1	0	—	1.3× / 0.8
Surveys · North Pacific Ocean	1	7.9	0	—	1.7× / 0.6
Exercises · Baltic Sea	1	7.3	0	—	0.7× / 1.4
Exercises · Andaman or Burma Sea	1	6.8	0	—	5.0× / 0.2
Derelicts · North Atlantic Ocean	1	6.4	0	—	0.5× / 2.2
Containers · North Atlantic Ocean	1	6.1	0	—	new / 0
Derelicts · Sea of Okhotsk	1	6	0	—	new / 0
Cable ops · Singapore Strait	1	5.5	1	5	1.3× / 0.8
Exercises · Persian Gulf	1	5.3	0	—	2.5× / 0.4
Cable ops · Tasman Sea	1	4.9	0	—	new / 0
Exercises · Bering Sea	1	4.8	0	—	2.5× / 0.4
Piracy · Red Sea	1	4.8	0	—	new / 0
Quakes · Southern Ocean	1	4.3	0	—	1.7× / 0.6
Other · South Pacific Ocean	1	4.2	1	4	5.0× / 0.2
Derelicts · Timor Sea	1	4	0	—	2.5× / 0.4
Debris · North Sea	1	3.8	0	—	new / 0
Cable ops · North Sea	1	3.3	0	—	0.6× / 1.6
Nav aids · Gulf of Alaska	1	3.2	0	—	1.7× / 0.6
Quakes · Flores Sea	1	3	0	—	1.7× / 0.6
Quakes · Mediterranean Sea - Eastern Basin	1	3	0	—	5.0× / 0.2
Quakes · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Quakes · Solomon Sea	1	3	0	—	0.7× / 1.4
Incidents · Tasman Sea	1	3	0	—	0.7× / 1.4
Nav aids · Mediterranean Sea - Eastern Basin	1	2.9	0	—	2.5× / 0.4
Debris · North Pacific Ocean	1	2.8	1	2	1.3× / 0.8
Incidents · Tyrrhenian Sea	1	2.6	1	2	1.7× / 0.6
Quakes · Celebes Sea	1	2.4	1	2	5.0× / 0.2
Other · North Atlantic Ocean	1	2.2	0	—	0.6× / 1.6
Exercises · Gulf of Alaska	1	2.1	0	—	new / 0
Nav aids · Bristol Channel	1	1.9	0	—	5.0× / 0.2
Incidents · Philippine Sea	1	1.1	0	—	0.2× / 6
Nav aids · Celtic Sea	1	0.5	0	—	0.5× / 2
Debris · Tasman Sea	1	0.5	0	—	new / 0
Cable ops · Tyrrhenian Sea	1	0.3	1	0	new / 0
Incidents · English Channel	1	0.1	0	—	5.0× / 0.2
Other · North Sea	1	0.1	0	—	1.7× / 0.6
Nav aids · Bass Strait	1	0	0	—	1.7× / 0.6
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	1	0	0	—	0.8× / 1.2
Surveys · Beaufort Sealong running	0	720	24	2,000	— / 0
Surveys · Arctic Oceanlong running	0	480	16	2,000	— / 0
Surveys · Baffin Baylong running	0	180	6	2,098	— / 0
Surveys · The Northwestern Passageslong running	0	180	6	983	— / 0
Exercises · Aegean Sea	0	120	4	158	0.0× / 1.8
Nav aids · Coral Sealong running	0	90	3	483	0.0× / 2.2
Nav aids · Gulf of California	0	90	3	221	0.0× / 0.2
Surveys · Laptev Sealong running	0	90	3	1,134	— / 0
Wrecks · Persian Gulf	0	90	3	228	0.0× / 0.2
Wrecks · The Northwestern Passages	0	90	3	297	— / 0
Surveys · Indian Ocean	0	60	2	81	0.0× / 0.4
Volcanic · Indian Oceanlong running	0	60	2	377	0.0× / 0.8
Nav aids · Malacca Strait	0	60	2	351	— / 0
Other · Mediterranean Sea - Eastern Basin	0	60	2	265	0.0× / 0.6
Nav aids · Red Sea	0	60	2	284	0.0× / 0.2
Ordnance · North Sea	0	53.6	1	242	0.0× / 1.2
Surveys · Malacca Strait	0	48	1	356	— / 0
Incidents · Mozambique Channel	0	42.3	1	60	0.0× / 0.2
Debris · Arctic Oceanlong running	0	30	1	1,652	— / 0
Other · Arctic Oceanlong running	0	30	1	665	— / 0
Wrecks · Bay of Bengal	0	30	1	130	0.0× / 0.2
Surveys · Bering Sea	0	30	1	257	— / 0
Other · Bismarck Sea	0	30	1	195	— / 0
Cable ops · Caribbean Sea	0	30	1	30	0.0× / 0.4
Other · Caribbean Sea	0	30	1	118	— / 0
Surveys · Chukchi Sealong running	0	30	1	1,533	— / 0
Other · Coral Sea	0	30	1	222	0.0× / 0.6
Surveys · Greenland Sealong running	0	30	1	2,316	— / 0
Ordnance · Gulf of Aden	0	30	1	106	— / 0
Surveys · Gulf of Suezlong running	0	30	1	517	0.0× / 0.4
Wrecks · Laccadive Sealong running	0	30	1	455	— / 0
Cable ops · Mediterranean Sea - Eastern Basin	0	30	1	36	0.0× / 3.4
Structures · North Atlantic Ocean	0	30	1	140	0.0× / 0.2
Wrecks · North Atlantic Oceanlong running	0	30	1	399	0.0× / 0.4
Nav aids · Persian Gulf	0	30	1	224	0.0× / 0.2
Piracy · Persian Gulflong running	0	30	1	538	— / 0
Surveys · Persian Gulf	0	30	1	308	— / 0
Volcanic · Philippine Sea	0	30	1	52	0.0× / 0.2
Other · South Atlantic Ocean	0	30	1	127	0.0× / 1.2
Nav aids · South China Sealong running	0	30	1	464	0.0× / 0.4
Other · South China Sea	0	30	1	349	0.0× / 0.2
Wrecks · South China Sealong running	0	30	1	706	0.0× / 0.6
Surveys · Tasman Sea	0	30	1	71	— / 0
Cable ops · Yellow Sea	0	30	1	37	— / 0
Surveys · Caribbean Sea	0	29.9	0	—	— / 0
Structures · Gulf of Mexico	0	26.4	0	—	— / 0
Other · English Channel	0	24.6	0	—	0.0× / 0.6
Other · Gulf of Aqaba	0	19.4	0	—	— / 0
Wrecks · South Atlantic Ocean	0	19.4	0	—	— / 0
Surveys · Philippine Sea	0	13	0	—	0.0× / 0.8
Spills · Gulf of Alaska	0	9	0	—	— / 0
Surveys · South Atlantic Ocean	0	8	0	—	0.0× / 1
Incidents · Celtic Sea	0	5.4	0	—	0.0× / 0.4
Derelicts · South Pacific Ocean	0	5	0	—	0.0× / 1.8
Surveys · Arabian Sea	0	0	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2009-06, 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.