Sea Ledger, October 2008

2008-10-01 to 2008-10-31 · archive

issued: 400
warning-days in force: 9,221
in force at month end: 317
sea × type cells: 204

baseline: same month, previous 5 years (2007-10, 2006-10, 2005-10, 2004-10, 2003-10)

By type

type	issued	warning-days	in force at end
Exercises	81	748.7	29
Incidents	68	1,076.2	39
Nav aids	63	2,150	74
Cable ops	49	759.6	29
Quakes	32	95.7	3
Spills	21	249	10
Other	19	565	17
Surveys	19	2,307	79
Derelicts	12	66	3
Icebergs	12	73.4	2
Wrecks	7	491.4	16
Missiles	5	62	2
Piracy	4	127.6	1
Ordnance	4	101.3	1
Restricted	2	141.4	5
Debris	1	32.9	1
Containers	1	5.6	1
Volcanic	0	124	4
Structures	0	44.5	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	23	127.4	4	109	1.7× / 13.2
Exercises · South Atlantic Oceansurge	17	122.5	4	37	3.9× / 4.4
Spills · Gulf of Mexicosurge	15	161	8	45	5.0× / 3
Quakes · South Pacific Ocean	12	35.9	2	32	1.9× / 6.2
Incidents · South Pacific Ocean	11	300.2	11	70	1.1× / 10
Incidents · North Pacific Ocean	11	180.9	6	65	1.7× / 6.4
Exercises · North Pacific Oceansurge	11	86.6	3	35	2.0× / 5.4
Nav aids · North Seasurge	10	129.4	7	298	2.2× / 4.6
Exercises · Bay of Bengal	10	61.8	4	38	1.4× / 7
Icebergs · South Atlantic Oceansurge	10	60.8	2	30	2.8× / 3.6
Incidents · Philippine Sea	9	53.5	2	37	1.9× / 4.8
Nav aids · South Atlantic Oceansurge	8	250.5	10	346	3.1× / 2.6
Exercises · Yellow Seasurge	7	66.9	1	34	3.9× / 1.8
Exercises · Japan Seasurge	6	86.5	2	34	2.5× / 2.4
Incidents · South Atlantic Ocean	6	37.9	4	17	1.9× / 3.2
Nav aids · Irish Sea and St. George's Channelsurge	6	24.4	2	19	5.0× / 1.2
Derelicts · North Pacific Oceansurge	6	9.3	1	21	10× / 0.6
Nav aids · North Atlantic Oceansurge	5	65.8	2	116	3.6× / 1.4
Nav aids · English Channelsurge	5	65.3	1	61	2.1× / 2.4
Missiles · North Pacific Ocean	5	62	2	33	0.9× / 5.8
Exercises · Philippine Seasurge	5	22	1	12	25× / 0.2
Other · North Seasurge	5	17.2	1	24	3.6× / 1.4
Exercises · Arabian Sea	5	11.5	2	33	1.6× / 3.2
Incidents · Coral Sea	5	11.4	1	27	1.7× / 3
Ordnance · North Seasurge	4	101.3	1	138	10× / 0.4
Nav aids · Gulf of Mexicosurgelong running	4	97.2	3	385	2.5× / 1.6
Cable ops · Mediterranean Sea - Eastern Basin	4	61.1	1	32	1.4× / 2.8
Exercises · North Atlantic Ocean	4	57.6	3	44	0.7× / 6
Surveys · South Atlantic Ocean	4	38.7	3	29	0.8× / 4.8
Nav aids · Celtic Seasurge	4	22.9	1	36	2.5× / 1.6
Surveys · Indian Oceansurge	4	5.8	2	8	10× / 0.4
Nav aids · The Coastal Waters of Southeast Alaska and British Columbianew	4	4.7	1	29	new / 0
Incidents · Mediterranean Sea - Eastern Basinsurge	3	138.3	5	59	2.1× / 1.4
Incidents · South China Sea	3	74.5	2	53	1.3× / 2.4
Incidents · Tasman Sea	3	44.9	1	53	1.4× / 2.2
Incidents · North Atlantic Ocean	3	43.6	3	58	1.1× / 2.8
Piracy · South China Seanew	3	41.5	0	—	new / 0
Exercises · Laccadive Sea	3	40.4	3	33	0.3× / 9
Spills · Bering Seasurge	3	38	1	30	7.5× / 0.4
Nav aids · Inner Seas off the West Coast of Scotlandsurge	3	34.2	1	114	2.5× / 1.2
Surveys · Mediterranean Sea - Eastern Basin	3	31.6	2	37	1.7× / 1.8
Exercises · South China Seanew	3	30.8	1	23	new / 0
Quakes · North Atlantic Oceansurge	3	9	0	—	7.5× / 0.4
Quakes · North Pacific Ocean	3	7.9	1	15	0.4× / 7.6
Incidents · Arafura Seasurge	3	4.8	0	—	5.0× / 0.6
Other · Inner Seas off the West Coast of Scotlandsurge	3	3.5	0	—	5.0× / 0.6
Nav aids · Gulf of Alaskasurge	3	1.1	0	—	7.5× / 0.4
Nav aids · North Pacific Oceanlong running	2	500.3	17	385	1.7× / 1.2
Cable ops · South China Sealong running	2	117.4	4	391	0.7× / 3
Other · North Atlantic Oceanlong running	2	45.8	1	548	2.5× / 0.8
Nav aids · Coral Sea	2	44.1	1	241	1.7× / 1.2
Incidents · Mozambique Channel	2	39.4	2	68	3.3× / 0.6
Cable ops · Arabian Sea	2	38.8	1	24	1.1× / 1.8
Cable ops · Indian Ocean	2	34.3	1	22	5.0× / 0.4
Incidents · Indian Ocean	2	25.5	0	—	0.7× / 2.8
Wrecks · Mediterranean Sea - Eastern Basin	2	21.5	1	21	5.0× / 0.4
Exercises · Baltic Sea	2	20.3	0	—	3.3× / 0.6
Restricted · North Atlantic Ocean	2	19.9	2	18	1.1× / 1.8
Cable ops · North Sea	2	16.4	1	58	2.0× / 1
Exercises · Caribbean Sea	2	11.7	0	—	3.3× / 0.6
Exercises · Andaman or Burma Sea	2	9.1	1	16	2.5× / 0.8
Surveys · North Atlantic Ocean	2	6.1	1	9	3.3× / 0.6
Quakes · Bismarck Sea	2	6	0	—	2.5× / 0.8
Quakes · Coral Sea	2	6	0	—	1.7× / 1.2
Quakes · Gulf of Tomininew	2	6	0	—	new / 0
Quakes · Philippine Sea	2	6	0	—	0.8× / 2.6
Derelicts · Bay of Bengal	2	5.5	1	28	10× / 0.2
Incidents · Tyrrhenian Seanew	2	3.6	1	28	new / 0
Nav aids · Gulf of Suez	1	111.4	3	190	1.3× / 0.8
Nav aids · Caribbean Sea	1	69	1	283	0.8× / 1.2
Surveys · North Sea	1	64.4	2	63	1.7× / 0.6
Cable ops · Caribbean Sea	1	63	3	169	2.5× / 0.4
Other · Mediterranean Sea - Eastern Basin	1	56.3	2	341	1.7× / 0.6
Cable ops · Singapore Strait	1	46.7	2	62	5.0× / 0.2
Other · Sea of Okhotsk	1	46	1	47	new / 0
Wrecks · Baltic Sea	1	41.6	2	36	new / 0
Nav aids · Persian Gulf	1	39.6	2	110	1.7× / 0.6
Cable ops · Gulf of Suez	1	38.6	2	70	1.7× / 0.6
Nav aids · Malacca Strait	1	38.6	2	109	new / 0
Other · Indian Ocean	1	35.1	1	135	1.3× / 0.8
Wrecks · South Atlantic Ocean	1	34.8	1	172	new / 0
Nav aids · Indian Ocean	1	32.5	1	218	2.5× / 0.4
Wrecks · North Atlantic Ocean	1	31.8	1	157	new / 0
Surveys · Bering Sealong running	1	31	1	409	new / 0
Cable ops · Gulf of Thailand	1	30.5	1	30	5.0× / 0.2
Cable ops · Adriatic Sea	1	28	0	—	new / 0
Spills · North Atlantic Ocean	1	22	1	43	0.6× / 1.8
Derelicts · North Atlantic Ocean	1	21.6	1	36	0.6× / 1.6
Incidents · Celtic Sea	1	17	0	—	5.0× / 0.2
Wrecks · Alboran Sea	1	16.7	0	—	new / 0
Cable ops · South Pacific Ocean	1	16.7	1	16	new / 0
Cable ops · North Atlantic Ocean	1	15.5	1	71	0.4× / 2.4
Spills · Caribbean Sea	1	14	0	—	1.7× / 0.6
Spills · North Pacific Ocean	1	14	0	—	2.5× / 0.4
Piracy · Singapore Strait	1	13.6	0	—	new / 0
Surveys · Arabian Sea	1	11.4	1	11	new / 0
Cable ops · North Pacific Ocean	1	11.3	1	11	new / 0
Nav aids · Tasman Sea	1	9.8	1	9	5.0× / 0.2
Cable ops · Tasman Sea	1	9.5	1	9	new / 0
Cable ops · Andaman or Burma Sea	1	9.4	0	—	new / 0
Exercises · South Pacific Ocean	1	8.9	0	—	0.3× / 3.6
Exercises · Persian Gulf	1	8.5	1	8	0.7× / 1.4
Other · Gulf of Mexico	1	7.1	0	—	new / 0
Derelicts · Philippine Sea	1	6.8	0	—	new / 0
Derelicts · Tyrrhenian Sea	1	6.8	0	—	1.7× / 0.6
Derelicts · Yellow Sea	1	6.6	0	—	new / 0
Icebergs · South Pacific Ocean	1	6.4	0	—	1.7× / 0.6
Icebergs · Indian Ocean	1	6.2	0	—	new / 0
Containers · North Atlantic Ocean	1	5.6	1	5	1.3× / 0.8
Exercises · Bering Sea	1	5.5	0	—	new / 0
Other · Norwegian Sea	1	4.6	0	—	5.0× / 0.2
Incidents · Arabian Sea	1	4.4	1	4	1.0× / 1
Incidents · Laccadive Sea	1	4.3	0	—	new / 0
Surveys · Celtic Sea	1	3.6	0	—	0.7× / 1.4
Exercises · Sea of Okhotsk	1	3.6	0	—	1.7× / 0.6
Surveys · Mediterranean Sea - Western Basin	1	3.5	1	3	5.0× / 0.2
Surveys · English Channel	1	3.4	0	—	2.5× / 0.4
Quakes · Arctic Ocean	1	3	0	—	new / 0
Quakes · Banda Sea	1	3	0	—	0.8× / 1.2
Quakes · Bay of Bengal	1	3	0	—	new / 0
Quakes · Solomon Sea	1	3	0	—	0.5× / 2.2
Quakes · South Atlantic Ocean	1	3	0	—	1.0× / 1
Quakes · Sulu Sea	1	3	0	—	new / 0
Other · Ionian Sea	1	2.6	1	2	5.0× / 0.2
Other · English Channel	1	2.5	0	—	2.5× / 0.4
Cable ops · Bay of Bengal	1	2.3	1	38	0.8× / 1.2
Debris · South Atlantic Ocean	1	1.9	0	—	new / 0
Incidents · Great Australian Bight	1	1.7	0	—	5.0× / 0.2
Other · Arabian Sea	1	1.4	1	1	5.0× / 0.2
Other · North Pacific Ocean	1	1.2	1	1	2.5× / 0.4
Cable ops · Japan Sea	1	0.7	0	—	new / 0
Wrecks · Inner Seas off the West Coast of Scotland	1	0.6	0	—	5.0× / 0.2
Nav aids · Bristol Channel	1	0.4	0	—	2.5× / 0.4
Cable ops · Norwegian Sea	1	0.2	1	0	new / 0
Cable ops · Red Sea	1	0.1	1	84	new / 0
Incidents · Timor Sea	1	0	0	—	0.8× / 1.2
Surveys · Beaufort Sealong running	0	775	25	1,758	0.0× / 3.8
Surveys · Arctic Oceanlong running	0	527	17	1,758	0.0× / 2
Surveys · Baffin Baylong running	0	186	6	1,856	0.0× / 0.6
Nav aids · Gulf of California	0	186	6	335	— / 0
Surveys · The Northwestern Passageslong running	0	186	6	741	0.0× / 0.4
Other · Gulf of Aden	0	165.5	4	66	— / 0
Nav aids · South Pacific Oceanlong running	0	141.4	4	510	0.0× / 2
Exercises · Aegean Sea	0	93	3	279	0.0× / 2
Surveys · Laptev Sealong running	0	93	3	892	0.0× / 0.2
Wrecks · South China Sealong running	0	93	3	668	0.0× / 0.4
Surveys · Gulf of Suez	0	77.1	1	275	0.0× / 0.8
Nav aids · South China Sea	0	71.4	2	222	0.0× / 0.2
Surveys · Gulf of Guinea	0	62	2	295	0.0× / 0.2
Volcanic · Indian Ocean	0	62	2	135	— / 0
Surveys · Malacca Strait	0	62	2	114	— / 0
Wrecks · The Northwestern Passages	0	62	2	55	— / 0
Nav aids · Laccadive Sealong running	0	55	1	716	— / 0
Piracy · Gulf of Aden	0	41.5	0	—	0.0× / 0.8
Other · South Pacific Ocean	0	34.8	0	—	0.0× / 0.4
Restricted · Alboran Sea	0	31	1	92	— / 0
Nav aids · Arabian Sealong running	0	31	1	689	0.0× / 0.8
Wrecks · Arabian Sea	0	31	1	338	— / 0
Debris · Arctic Oceanlong running	0	31	1	1,410	— / 0
Other · Arctic Oceanlong running	0	31	1	423	— / 0
Restricted · Baltic Sea	0	31	1	100	— / 0
Volcanic · Banda Sealong running	0	31	1	578	— / 0
Wrecks · Bay of Bengallong running	0	31	1	882	— / 0
Wrecks · Caribbean Sea	0	31	1	44	0.0× / 0.4
Surveys · Chukchi Sealong running	0	31	1	1,291	— / 0
Other · Davis Strait	0	31	1	33	— / 0
Wrecks · English Channel	0	31	1	101	— / 0
Surveys · Greenland Sealong running	0	31	1	2,074	— / 0
Nav aids · Gulf of Guinea	0	31	1	67	— / 0
Other · Gulf of Thailandlong running	0	31	1	687	— / 0
Wrecks · Laccadive Sea	0	31	1	213	— / 0
Nav aids · Mediterranean Sea - Eastern Basin	0	31	1	32	0.0× / 0.2
Wrecks · North Pacific Oceanlong running	0	31	1	597	— / 0
Cable ops · Persian Gulf	0	31	1	136	— / 0
Piracy · Persian Gulf	0	31	1	296	— / 0
Surveys · Persian Gulf	0	31	1	66	0.0× / 0.2
Nav aids · Philippine Sea	0	31	1	194	— / 0
Volcanic · Philippine Sea	0	31	1	118	0.0× / 0.4
Nav aids · Red Sea	0	31	1	42	— / 0
Other · South China Sea	0	31	1	107	— / 0
Structures · South China Sea	0	31	1	176	— / 0
Surveys · South Pacific Ocean	0	31	1	364	0.0× / 0.4
Restricted · Strait of Gibraltar	0	31	1	73	— / 0
Cable ops · Sulu Sea	0	31	1	86	— / 0
Restricted · Mediterranean Sea - Eastern Basin	0	28.5	0	—	— / 0
Incidents · Southern Ocean	0	24.4	0	—	— / 0
Other · Celtic Sea	0	17.4	0	—	— / 0
Incidents · Gulf of Aden	0	17.4	0	—	— / 0
Incidents · Singapore Strait	0	17.4	0	—	— / 0
Incidents · Sulu Sea	0	17.4	0	—	— / 0
Cable ops · Sea of Okhotsk	0	15	0	—	0.0× / 0.6
Structures · Black Sea	0	13.5	0	—	— / 0
Incidents · Japan Sea	0	10.4	0	—	0.0× / 0.6
Surveys · Black Sea	0	10	0	—	0.0× / 0.8
Derelicts · South China Sea	0	9.4	0	—	0.0× / 0.4
Cable ops · Eastern China Sea	0	9.2	0	—	0.0× / 0.8
Cable ops · Black Sea	0	5.5	0	—	0.0× / 0.4
Surveys · Irish Sea and St. George's Channel	0	5.4	0	—	0.0× / 0.2
Wrecks · Persian Gulf	0	3.4	0	—	0.0× / 0.4
Incidents · Bay of Biscay	0	3.3	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2008-10, 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.