Sea Ledger, August 2008

2008-08-01 to 2008-08-31 · archive

issued: 306
warning-days in force: 8,433
in force at month end: 276
sea × type cells: 198

baseline: same month, previous 5 years (2007-08, 2006-08, 2005-08, 2004-08, 2003-08)

By type

type	issued	warning-days	in force at end
Incidents	70	1,227.9	42
Exercises	50	543.7	15
Nav aids	47	2,030.9	63
Quakes	36	107.3	2
Cable ops	31	934.7	36
Derelicts	16	116.8	4
Spills	14	200	6
Other	11	356.5	13
Surveys	11	1,972.9	62
Missiles	7	62	2
Piracy	5	54.9	6
Wrecks	3	412	14
Restricted	2	122.6	4
Structures	1	66.2	1
Containers	1	12.3	0
Debris	1	57.5	1
Volcanic	0	124	4
Icebergs	0	0	0
Ordnance	0	31	1

By sea and type · 198 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Incidents · South Pacific Oceansurge	16	484.3	16	64	2.1× / 7.6
Exercises · North Pacific Ocean	11	88.4	2	35	1.1× / 10.4
Incidents · North Pacific Ocean	9	138.5	6	51	0.7× / 12.4
Spills · Gulf of Mexicosurge	9	112	4	45	2.3× / 4
Nav aids · The Coastal Waters of Southeast Alaska and British Columbiasurge	9	14.6	0	—	45× / 0.2
Quakes · South Pacific Ocean	8	24.9	0	—	0.8× / 10.2
Missiles · North Pacific Ocean	7	62	2	63	1.3× / 5.6
Incidents · Philippine Sea	7	48.5	2	72	1.1× / 6.2
Nav aids · South Atlantic Ocean	6	140.9	6	285	1.5× / 4
Cable ops · North Atlantic Ocean	6	103.6	3	75	1.8× / 3.4
Derelicts · North Pacific Oceansurge	6	23	1	23	15× / 0.4
Cable ops · South China Sea	5	136.3	6	330	1.9× / 2.6
Cable ops · Singapore Straitsurge	5	116.1	6	89	25× / 0.2
Incidents · North Atlantic Ocean	5	110.9	2	60	1.4× / 3.6
Nav aids · North Sea	5	110.6	3	237	1.1× / 4.6
Cable ops · South Atlantic Ocean	5	96.7	5	61	0.6× / 8.4
Exercises · Yellow Seasurge	5	68.5	2	36	2.5× / 2
Incidents · South Atlantic Ocean	5	41.3	1	36	1.7× / 3
Exercises · Bay of Bengal	5	38.2	1	28	1.0× / 4.8
Exercises · South Atlantic Ocean	5	28.1	0	—	1.1× / 4.4
Piracy · Gulf of Adennew	5	23.9	5	5	new / 0
Incidents · Coral Sea	5	1.8	0	—	1.5× / 3.4
Incidents · Mediterranean Sea - Eastern Basinsurge	4	77.3	3	75	2.9× / 1.4
Exercises · Japan Seasurge	4	74.8	2	35	2.0× / 2
Nav aids · Indian Oceansurgelong running	4	55.6	2	500	2.9× / 1.4
Other · Gulf of Adennew	4	21.6	4	5	new / 0
Quakes · South Atlantic Oceansurge	4	13.8	0	—	2.2× / 1.8
Quakes · Indian Oceansurge	4	12	0	—	2.9× / 1.4
Nav aids · North Atlantic Ocean	3	94.8	3	136	1.1× / 2.8
Exercises · Laccadive Sea	3	50.8	2	32	0.3× / 9.2
Incidents · Arabian Seasurge	3	44	3	17	2.5× / 1.2
Surveys · South Atlantic Ocean	3	42.8	0	—	1.5× / 2
Nav aids · Celtic Seasurge	3	36	2	192	3.8× / 0.8
Exercises · North Atlantic Ocean	3	18.3	0	—	0.2× / 12.4
Derelicts · Philippine Seasurge	3	15.1	1	14	7.5× / 0.4
Nav aids · Gulf of Alaskanew	3	9.6	1	38	new / 0
Quakes · North Pacific Ocean	3	9	0	—	0.4× / 7.6
Quakes · Philippine Seasurge	3	9	0	—	2.5× / 1.2
Exercises · Indian Oceansurge	3	8.3	1	26	2.1× / 1.4
Nav aids · English Channelsurge	3	8.2	1	26	5.0× / 0.6
Quakes · Southern Ocean	3	6.9	1	22	1.3× / 2.4
Exercises · Arabian Seasurge	3	4.6	1	28	2.1× / 1.4
Incidents · Southern Oceansurge	3	0.4	0	—	3.8× / 0.8
Spills · North Atlantic Ocean	2	39	0	—	2.0× / 1
Cable ops · Red Sea	2	35.1	2	23	10× / 0.2
Incidents · Bay of Biscay	2	27.5	2	19	5.0× / 0.4
Exercises · Baltic Sea	2	16.5	0	—	3.3× / 0.6
Incidents · Indian Ocean	2	16.5	0	—	0.8× / 2.6
Incidents · Mozambique Channel	2	11.6	2	7	5.0× / 0.4
Exercises · South Pacific Ocean	2	11.4	0	—	0.8× / 2.4
Exercises · Philippine Sea	2	8.4	1	29	0.8× / 2.6
Nav aids · Great Australian Bight	2	6.4	0	—	2.0× / 1
Quakes · Bay of Bengalnew	2	6	0	—	new / 0
Quakes · Bering Seanew	2	6	0	—	new / 0
Surveys · Arctic Oceanlong running	1	476.2	16	1,697	5.0× / 0.2
Nav aids · South Pacific Oceanlong running	1	152.4	4	449	0.4× / 2.6
Nav aids · Gulf of Mexico	1	150.2	3	324	1.7× / 0.6
Other · Mediterranean Sea - Eastern Basin	1	71.5	3	280	0.8× / 1.2
Incidents · South China Sea	1	62.1	2	34	0.6× / 1.8
Nav aids · Caribbean Sea	1	62	2	222	new / 0
Surveys · Malacca Strait	1	62	2	53	5.0× / 0.2
Nav aids · Coral Sea	1	60.4	1	180	0.6× / 1.8
Cable ops · Celebes Sea	1	50.6	1	32	new / 0
Wrecks · English Channel	1	49.5	2	40	1.7× / 0.6
Cable ops · Bay of Bengal	1	47	1	144	new / 0
Other · South China Sealong running	1	43.5	1	732	1.3× / 0.8
Surveys · Gulf of Guinea	1	34.7	2	234	1.7× / 0.6
Incidents · Tyrrhenian Sea	1	34	1	55	5.0× / 0.2
Nav aids · Irish Sea and St. George's Channel	1	31.6	1	121	0.6× / 1.8
Surveys · Persian Gulf	1	31	1	129	5.0× / 0.2
Restricted · Black Sea	1	30.4	1	30	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	28.7	0	—	0.7× / 1.4
Derelicts · Tyrrhenian Sea	1	28	1	27	1.3× / 0.8
Surveys · Irish Sea and St. George's Channel	1	26.6	1	26	new / 0
Incidents · Bay of Bengal	1	25.6	1	45	0.7× / 1.4
Cable ops · Sulu Sea	1	25.6	1	25	5.0× / 0.2
Restricted · Strait of Gibraltar	1	24.7	1	62	5.0× / 0.2
Cable ops · Eastern China Sea	1	23.4	1	23	2.5× / 0.4
Incidents · Sea of Okhotsk	1	23.2	0	—	5.0× / 0.2
Debris · Bering Sea	1	21.5	0	—	new / 0
Nav aids · Tasman Sea	1	20.2	0	—	1.0× / 1
Cable ops · North Pacific Ocean	1	14.6	1	14	new / 0
Spills · Gulf of Alaska	1	14	0	—	1.3× / 0.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	1	14	1.3× / 0.8
Nav aids · Andaman or Burma Sea	1	13.9	0	—	0.8× / 1.2
Spills · North Pacific Ocean	1	13	1	13	1.0× / 1
Derelicts · Mediterranean Sea - Western Basin	1	12.9	1	12	2.5× / 0.4
Incidents · North Sea	1	12.4	0	—	2.5× / 0.4
Derelicts · North Atlantic Ocean	1	11	0	—	0.5× / 2
Wrecks · Eastern China Sea	1	10.6	1	10	new / 0
Cable ops · South Pacific Ocean	1	10	1	10	2.5× / 0.4
Cable ops · Gulf of Suez	1	9.5	1	9	new / 0
Derelicts · Caribbean Sea	1	6.8	0	—	new / 0
Surveys · Bass Strait	1	6.7	0	—	new / 0
Nav aids · Mediterranean Sea - Western Basin	1	6.4	1	6	1.3× / 0.8
Containers · Arabian Sea	1	6.3	0	—	1.7× / 0.6
Nav aids · Gulf of Guinea	1	6.3	1	6	new / 0
Other · Gulf of Guinea	1	6.2	0	—	new / 0
Structures · Mediterranean Sea - Eastern Basin	1	5.8	0	—	new / 0
Exercises · Caribbean Sea	1	4.2	0	—	5.0× / 0.2
Cable ops · Bristol Channel	1	3.4	0	—	5.0× / 0.2
Quakes · Arctic Ocean	1	3	0	—	5.0× / 0.2
Quakes · Banda Sea	1	3	0	—	1.0× / 1
Quakes · Coral Sea	1	3	0	—	0.6× / 1.8
Quakes · Flores Sea	1	3	0	—	new / 0
Quakes · Gulf of California	1	3	0	—	new / 0
Quakes · Solomon Sea	1	3	0	—	1.0× / 1
Surveys · North Sea	1	2.6	1	2	0.8× / 1.2
Other · Caribbean Sea	1	2.5	0	—	1.3× / 0.8
Derelicts · Bay of Bengal	1	2.4	0	—	1.7× / 0.6
Derelicts · Laccadive Sea	1	2.2	0	—	new / 0
Exercises · Bering Sea	1	1.8	0	—	2.5× / 0.4
Incidents · Great Australian Bight	1	1.8	0	—	5.0× / 0.2
Quakes · Bismarck Sea	1	1.7	1	1	2.5× / 0.4
Wrecks · South Pacific Ocean	1	1.4	0	—	new / 0
Incidents · Mediterranean Sea - Western Basin	1	1	0	—	2.5× / 0.4
Other · Inner Seas off the West Coast of Scotland	1	0.9	0	—	2.5× / 0.4
Other · Irish Sea and St. George's Channel	1	0.9	0	—	5.0× / 0.2
Other · English Channel	1	0.7	0	—	1.7× / 0.6
Derelicts · South China Sea	1	0.3	0	—	1.3× / 0.8
Surveys · Beaufort Sealong running	0	713	23	1,697	— / 0
Nav aids · North Pacific Ocean	0	465	15	324	0.0× / 0.2
Nav aids · Gulf of California	0	186	6	274	— / 0
Surveys · Baffin Baylong running	0	155	5	1,795	— / 0
Exercises · Aegean Sea	0	93	3	218	0.0× / 1.4
Cable ops · Caribbean Sea	0	93	3	108	0.0× / 0.4
Surveys · Laptev Sealong running	0	93	3	831	— / 0
Wrecks · South China Sealong running	0	93	3	607	0.0× / 0.8
Nav aids · Laccadive Sealong running	0	91.4	2	655	— / 0
Nav aids · Gulf of Suez	0	62	2	129	0.0× / 0.2
Volcanic · Indian Ocean	0	62	2	74	— / 0
Cable ops · Persian Gulf	0	62	2	179	0.0× / 0.6
Wrecks · Persian Gulf	0	62	2	51	0.0× / 0.4
Nav aids · South China Sea	0	62	2	161	— / 0
Surveys · The Northwestern Passageslong running	0	62	2	680	— / 0
Nav aids · Arabian Sealong running	0	60.4	1	628	0.0× / 1.8
Incidents · Tasman Sea	0	47.4	1	58	0.0× / 2
Restricted · Alboran Sea	0	31	1	31	— / 0
Surveys · Alboran Sea	0	31	1	32	— / 0
Wrecks · Arabian Sea	0	31	1	277	0.0× / 0.8
Debris · Arctic Oceanlong running	0	31	1	1,349	— / 0
Other · Arctic Ocean	0	31	1	362	0.0× / 0.4
Restricted · Baltic Sea	0	31	1	39	— / 0
Volcanic · Banda Sealong running	0	31	1	517	— / 0
Wrecks · Bay of Bengallong running	0	31	1	821	0.0× / 0.6
Surveys · Bering Sea	0	31	1	348	— / 0
Surveys · Chukchi Sealong running	0	31	1	1,230	— / 0
Surveys · Greenland Sealong running	0	31	1	2,013	— / 0
Surveys · Gulf of Suez	0	31	1	214	— / 0
Other · Gulf of Thailandlong running	0	31	1	626	— / 0
Other · Indian Ocean	0	31	1	74	— / 0
Nav aids · Inner Seas off the West Coast of Scotland	0	31	1	53	0.0× / 3.2
Wrecks · Laccadive Sea	0	31	1	152	— / 0
Nav aids · Malacca Strait	0	31	1	48	0.0× / 0.2
Cable ops · Mozambique Channel	0	31	1	61	— / 0
Other · North Atlantic Oceanlong running	0	31	1	487	0.0× / 2.4
Wrecks · North Atlantic Ocean	0	31	1	96	— / 0
Wrecks · North Pacific Oceanlong running	0	31	1	536	— / 0
Ordnance · North Sea	0	31	1	77	0.0× / 0.6
Nav aids · Persian Gulf	0	31	1	49	0.0× / 0.6
Piracy · Persian Gulf	0	31	1	235	— / 0
Nav aids · Philippine Sea	0	31	1	133	— / 0
Volcanic · Philippine Sea	0	31	1	57	0.0× / 0.2
Cable ops · Sea of Okhotsk	0	31	1	36	0.0× / 1
Other · Sea of Okhotsk	0	31	1	37	0.0× / 0.2
Wrecks · South Atlantic Ocean	0	31	1	111	0.0× / 0.2
Structures · South China Sea	0	31	1	115	— / 0
Surveys · South Pacific Ocean	0	31	1	303	— / 0
Surveys · Japan Sea	0	30.6	0	—	— / 0
Other · North Pacific Ocean	0	30.4	0	—	0.0× / 1
Structures · Gulf of Suez	0	29.4	0	—	— / 0
Exercises · South China Sea	0	28.4	0	—	0.0× / 0.2
Other · Norwegian Sea	0	18.3	0	—	— / 0
Surveys · Indian Ocean	0	18	0	—	0.0× / 0.2
Derelicts · Bay of Biscay	0	12.3	0	—	0.0× / 0.4
Incidents · Eastern China Sea	0	12.3	0	—	— / 0
Cable ops · Mediterranean Sea - Eastern Basin	0	12.3	0	—	0.0× / 2.6
Cable ops · Japan Sea	0	12	0	—	0.0× / 0.4
Cable ops · Java Sea	0	10	0	—	0.0× / 0.2
Wrecks · Mediterranean Sea - Eastern Basin	0	6.5	0	—	0.0× / 0.2
Cable ops · Bay of Biscay	0	5.7	0	—	— / 0
Restricted · Mediterranean Sea - Eastern Basin	0	5.5	0	—	— / 0
Cable ops · Timor Sea	0	5.3	0	—	— / 0
Spills · Bering Sea	0	5	0	—	0.0× / 0.2
Incidents · Celtic Sea	0	5	0	—	— / 0
Containers · Indian Ocean	0	5	0	—	— / 0
Other · Mediterranean Sea - Western Basin	0	5	0	—	0.0× / 0.2
Debris · North Atlantic Ocean	0	5	0	—	0.0× / 0.6
Surveys · South China Sea	0	4	0	—	0.0× / 0.8
Wrecks · North Sea	0	3	0	—	0.0× / 1.4
Spills · Philippine Sea	0	3	0	—	— / 0
Derelicts · Arabian Sea	0	1.4	0	—	0.0× / 0.2
Derelicts · Coral Sea	0	1.4	0	—	0.0× / 0.4
Containers · South Pacific Ocean	0	1	0	—	— / 0
Cable ops · Celtic Sea	0	0.5	0	—	0.0× / 0.6
Incidents · Timor Sea	0	0.5	0	—	0.0× / 0.2
Surveys · North Atlantic Ocean	0	0	0	—	0.0× / 1.8
Icebergs · South Pacific Ocean	0	0	0	—	0.0× / 0.6

Cite: seahazards.com Sea Ledger, 2008-08, 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.