Sea Ledger, November 2008

2008-11-01 to 2008-11-30 · archive

issued: 376
warning-days in force: 9,013
in force at month end: 277
sea × type cells: 188

baseline: same month, previous 5 years (2007-11, 2006-11, 2005-11, 2004-11, 2003-11)

By type

type	issued	warning-days	in force at end
Nav aids	80	2,291	76
Incidents	67	1,108.8	27
Exercises	59	698.8	19
Quakes	48	142.6	4
Cable ops	48	808.2	27
Spills	17	284	5
Derelicts	16	77.1	3
Icebergs	10	63.6	1
Other	7	461	12
Surveys	6	2,150.9	72
Missiles	6	60	2
Wrecks	5	469.3	17
Debris	3	49.3	1
Piracy	1	43.6	2
Restricted	1	113	3
Ordnance	1	40.4	1
Towing	1	0.7	0
Volcanic	0	120	4
Structures	0	30	1
Containers	0	1	0

By sea and type · 188 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	23	135.7	5	43	1.5× / 15.8
Quakes · South Pacific Ocean	18	54.5	1	32	1.4× / 12.8
Exercises · South Atlantic Oceansurge	15	100.1	2	49	4.7× / 3.2
Spills · Gulf of Mexicosurge	13	229	4	44	4.3× / 3
Nav aids · North Atlantic Oceansurge	13	99	2	146	4.1× / 3.2
Exercises · Yellow Seasurge	12	79.2	3	32	5.5× / 2.2
Incidents · South Atlantic Oceansurge	12	58.7	0	—	2.6× / 4.6
Incidents · South Pacific Ocean	11	313.9	8	69	2.0× / 5.6
Exercises · North Pacific Oceansurge	10	67.3	2	33	2.2× / 4.6
Incidents · North Pacific Ocean	9	173.9	4	58	1.1× / 8
Icebergs · South Atlantic Oceansurge	9	59.2	0	—	4.5× / 2
Incidents · Philippine Seasurge	9	34.9	0	—	2.6× / 3.4
Nav aids · South Atlantic Oceansurgelong running	8	265.2	7	376	2.2× / 3.6
Nav aids · North Seasurge	8	158.6	5	328	2.4× / 3.4
Incidents · Indian Ocean	8	82.4	3	27	1.7× / 4.8
Nav aids · Coral Seasurge	7	42	1	271	2.3× / 3
Nav aids · Gulf of Californianewlong running	6	208	10	365	new / 0
Exercises · Bay of Bengal	6	80	3	32	0.7× / 8.6
Nav aids · Irish Sea and St. George's Channelsurge	6	63.4	2	42	2.7× / 2.2
Missiles · North Pacific Ocean	6	60	2	35	1.3× / 4.8
Quakes · North Pacific Ocean	6	16.5	2	31	0.4× / 14
Nav aids · The Coastal Waters of Southeast Alaska and British Columbiasurge	6	5.2	0	—	15× / 0.4
Quakes · Coral Seasurge	5	15	0	—	2.5× / 2
Incidents · North Atlantic Ocean	4	106.6	3	51	0.7× / 5.4
Nav aids · Celtic Seasurge	4	72.3	3	47	2.0× / 2
Quakes · Indian Ocean	4	11.6	1	27	1.3× / 3.2
Nav aids · North Pacific Oceansurgelong running	3	521.8	18	415	7.5× / 0.4
Nav aids · Persian Gulfsurge	3	87.3	5	140	15× / 0.2
Cable ops · Arabian Sea	3	74.8	3	47	1.3× / 2.4
Exercises · Laccadive Sea	3	65.2	1	33	0.3× / 9.6
Spills · North Atlantic Ocean	3	48	0	—	1.4× / 2.2
Incidents · South China Sea	3	46.5	2	67	0.8× / 4
Derelicts · North Atlantic Ocean	3	21.8	0	—	1.5× / 2
Cable ops · North Seasurge	3	20	1	32	3.8× / 0.8
Derelicts · Caribbean Seasurge	3	14.1	0	—	15× / 0.2
Incidents · Coral Sea	3	13.9	1	34	1.7× / 1.8
Quakes · Banda Sea	3	9	0	—	1.7× / 1.8
Quakes · Celebes Seasurge	3	9	0	—	15× / 0.2
Quakes · South Atlantic Oceansurge	3	9	0	—	2.5× / 1.2
Nav aids · South Pacific Oceanlong running	2	157.4	5	540	2.5× / 0.8
Cable ops · South China Sealong running	2	111.9	4	421	1.7× / 1.2
Incidents · Mediterranean Sea - Eastern Basin	2	96.1	2	64	0.6× / 3.2
Surveys · South Atlantic Ocean	2	66	3	59	0.6× / 3.2
Exercises · Japan Sea	2	60	2	32	1.3× / 1.6
Wrecks · South Atlantic Ocean	2	59.4	3	50	10× / 0.2
Exercises · North Atlantic Ocean	2	49.5	1	56	0.3× / 7.8
Exercises · Philippine Sea	2	36.1	1	32	2.5× / 0.8
Surveys · Mediterranean Sea - Eastern Basin	2	35.2	1	38	1.4× / 1.4
Nav aids · Mediterranean Sea - Eastern Basin	2	34.7	0	—	3.3× / 0.6
Nav aids · Inner Seas off the West Coast of Scotland	2	31.8	1	144	1.0× / 2
Cable ops · Bay of Bengal	2	28	1	32	1.3× / 1.6
Nav aids · Andaman or Burma Sea	2	27.2	0	—	3.3× / 0.6
Other · Coral Sea	2	14.6	1	16	10× / 0.2
Cable ops · Gulf of Guineanew	2	12.2	0	—	new / 0
Exercises · South Pacific Ocean	2	6.5	0	—	0.6× / 3.2
Quakes · Bismarck Sea	2	6	0	—	1.3× / 1.6
Derelicts · South China Sea	2	4.1	1	9	1.4× / 1.4
Derelicts · Bay of Biscay	2	3	0	—	10× / 0.2
Nav aids · Great Australian Bight	2	2.3	0	—	1.1× / 1.8
Nav aids · Gulf of Alaska	2	0.7	0	—	5.0× / 0.4
Other · Mediterranean Sea - Eastern Basinlong running	1	80.4	3	371	0.7× / 1.4
Wrecks · The Northwestern Passages	1	65.1	3	85	new / 0
Other · Indian Ocean	1	43.5	2	165	5.0× / 0.2
Cable ops · Gulf of Suez	1	40	1	100	5.0× / 0.2
Cable ops · Mediterranean Sea - Eastern Basin	1	36.4	1	38	0.3× / 3.8
Nav aids · Philippine Sea	1	35.8	1	224	new / 0
Nav aids · Indian Ocean	1	35.6	2	248	2.5× / 0.4
Wrecks · English Channel	1	32.4	2	131	new / 0
Exercises · South China Sea	1	31.9	1	32	new / 0
Incidents · Tasman Sea	1	31.9	0	—	0.5× / 2.2
Cable ops · Red Sea	1	30	1	30	5.0× / 0.2
Surveys · Mediterranean Sea - Western Basin	1	28.5	1	33	2.5× / 0.4
Cable ops · Persian Gulf	1	26.9	1	166	2.5× / 0.4
Incidents · Mediterranean Sea - Western Basin	1	23.4	1	23	2.5× / 0.4
Restricted · North Atlantic Ocean	1	23	0	—	2.5× / 0.4
Wrecks · Persian Gulf	1	16.7	1	16	new / 0
Surveys · Inner Seas off the West Coast of Scotland	1	16.6	1	16	new / 0
Cable ops · Andaman or Burma Sea	1	16.4	1	16	5.0× / 0.2
Cable ops · Singapore Strait	1	15.4	0	—	new / 0
Cable ops · North Pacific Ocean	1	14	0	—	1.3× / 0.8
Piracy · Singapore Strait	1	13.6	1	13	new / 0
Other · Bay of Biscay	1	12.6	0	—	new / 0
Other · Adriatic Sea	1	12.3	0	—	5.0× / 0.2
Exercises · Arabian Sea	1	11.6	0	—	0.3× / 3.8
Derelicts · North Pacific Ocean	1	11.3	1	30	1.3× / 0.8
Cable ops · Tasman Sea	1	10.9	0	—	new / 0
Ordnance · Laccadive Sea	1	10.4	0	—	new / 0
Exercises · Baltic Sea	1	7.3	0	—	1.3× / 0.8
Cable ops · Celebes Sea	1	7.3	1	7	new / 0
Incidents · Great Australian Bight	1	7.3	0	—	2.5× / 0.4
Nav aids · English Channel	1	7	0	—	0.3× / 3.2
Derelicts · Celtic Sea	1	6.9	1	6	1.7× / 0.6
Debris · North Pacific Ocean	1	6.9	0	—	new / 0
Other · Gulf of Mexico	1	6.8	0	—	1.3× / 0.8
Derelicts · Indian Ocean	1	6.7	0	—	0.4× / 2.6
Derelicts · South Pacific Ocean	1	6.7	0	—	1.7× / 0.6
Incidents · Arafura Sea	1	6.2	0	—	2.5× / 0.4
Debris · North Atlantic Ocean	1	6.2	0	—	2.5× / 0.4
Debris · South Atlantic Ocean	1	6.2	0	—	2.5× / 0.4
Cable ops · North Atlantic Ocean	1	6	0	—	0.6× / 1.8
Incidents · Bay of Bengal	1	5.8	0	—	2.5× / 0.4
Cable ops · Irish Sea and St. George's Channel	1	5.4	0	—	5.0× / 0.2
Exercises · Andaman or Burma Sea	1	5.2	0	—	1.0× / 1
Incidents · English Channel	1	4.5	1	4	new / 0
Cable ops · Java Sea	1	4.5	1	4	5.0× / 0.2
Icebergs · South Pacific Ocean	1	4.4	1	4	0.6× / 1.6
Cable ops · English Channel	1	3.4	0	—	1.0× / 1
Quakes · Arctic Ocean	1	3	0	—	new / 0
Quakes · Bay of Bengal	1	3	0	—	5.0× / 0.2
Spills · North Pacific Ocean	1	3	1	3	0.6× / 1.6
Quakes · Sea of Okhotsk	1	3	0	—	1.3× / 0.8
Quakes · Solomon Sea	1	3	0	—	0.4× / 2.6
Derelicts · Mediterranean Sea - Eastern Basin	1	1.2	0	—	1.7× / 0.6
Nav aids · Bristol Channel	1	0.9	0	—	2.5× / 0.4
Derelicts · South Atlantic Ocean	1	0.9	0	—	1.0× / 1
Towing · Mediterranean Sea - Eastern Basin	1	0.7	0	—	new / 0
Exercises · Gulf of Mexico	1	0.4	0	—	new / 0
Surveys · Beaufort Sealong running	0	720	24	1,788	— / 0
Surveys · Arctic Oceanlong running	0	480	16	1,788	— / 0
Surveys · Baffin Baylong running	0	180	6	1,886	— / 0
Surveys · The Northwestern Passageslong running	0	180	6	771	— / 0
Exercises · Aegean Sea	0	90	3	309	0.0× / 1.8
Cable ops · Caribbean Sea	0	90	3	199	— / 0
Nav aids · Gulf of Mexicolong running	0	90	3	415	0.0× / 0.6
Nav aids · Gulf of Suez	0	90	3	212	0.0× / 0.2
Surveys · Laptev Sealong running	0	90	3	922	— / 0
Wrecks · South China Sealong running	0	90	3	698	0.0× / 0.2
Surveys · Gulf of Guinea	0	60	2	325	0.0× / 0.4
Volcanic · Indian Ocean	0	60	2	165	— / 0
Nav aids · Malacca Strait	0	60	2	139	— / 0
Surveys · Malacca Strait	0	60	2	144	— / 0
Nav aids · South China Sea	0	60	2	252	— / 0
Wrecks · Baltic Sea	0	58.4	1	66	— / 0
Incidents · Mozambique Channel	0	58.4	1	46	0.0× / 0.6
Other · Gulf of Aden	0	44.8	0	—	— / 0
Surveys · Indian Ocean	0	30.4	1	30	0.0× / 1
Restricted · Alboran Sea	0	30	1	122	0.0× / 0.2
Nav aids · Arabian Sealong running	0	30	1	719	0.0× / 0.4
Wrecks · Arabian Sealong running	0	30	1	368	0.0× / 0.4
Debris · Arctic Oceanlong running	0	30	1	1,440	— / 0
Other · Arctic Oceanlong running	0	30	1	453	— / 0
Restricted · Baltic Sea	0	30	1	130	— / 0
Volcanic · Banda Sealong running	0	30	1	608	— / 0
Wrecks · Bay of Bengallong running	0	30	1	912	— / 0
Surveys · Bering Sea	0	30	1	45	— / 0
Surveys · Chukchi Sealong running	0	30	1	1,321	— / 0
Surveys · Greenland Sealong running	0	30	1	2,104	— / 0
Surveys · Gulf of Suez	0	30	1	305	0.0× / 0.2
Cable ops · Gulf of Thailand	0	30	1	60	— / 0
Other · Gulf of Thailandlong running	0	30	1	717	— / 0
Cable ops · Indian Ocean	0	30	1	44	0.0× / 0.6
Other · Ionian Sea	0	30	1	32	— / 0
Nav aids · Laccadive Sealong running	0	30	1	746	0.0× / 0.4
Wrecks · Laccadive Sea	0	30	1	243	— / 0
Other · North Atlantic Oceanlong running	0	30	1	578	0.0× / 0.6
Wrecks · North Atlantic Ocean	0	30	1	187	— / 0
Ordnance · North Sea	0	30	1	30	0.0× / 0.4
Other · North Sea	0	30	1	44	0.0× / 0.6
Piracy · Persian Gulf	0	30	1	326	0.0× / 0.2
Surveys · Persian Gulf	0	30	1	96	— / 0
Volcanic · Philippine Sea	0	30	1	148	0.0× / 0.4
Nav aids · Red Sea	0	30	1	72	0.0× / 1
Other · South China Sea	0	30	1	137	0.0× / 0.4
Structures · South China Sea	0	30	1	206	— / 0
Surveys · South Pacific Oceanlong running	0	30	1	394	0.0× / 0.2
Restricted · Strait of Gibraltar	0	30	1	103	— / 0
Cable ops · Sulu Sea	0	30	1	116	0.0× / 0.2
Nav aids · Tasman Sea	0	30	1	39	0.0× / 0.6
Incidents · Tyrrhenian Sea	0	30	1	33	0.0× / 0.2
Other · Davis Strait	0	28.4	0	—	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	26.5	0	—	0.0× / 0.4
Cable ops · South Pacific Ocean	0	22.4	0	—	— / 0
Other · Arabian Sea	0	17.6	0	—	— / 0
Surveys · North Sea	0	15.2	0	—	0.0× / 0.6
Other · Sea of Okhotsk	0	15	0	—	— / 0
Incidents · Arabian Sea	0	14.4	0	—	0.0× / 0.6
Exercises · Persian Gulf	0	8.5	0	—	0.0× / 0.8
Nav aids · Caribbean Sea	0	7.4	0	—	0.0× / 1
Nav aids · Gulf of Guinea	0	7.4	0	—	— / 0
Surveys · North Atlantic Ocean	0	7	0	—	0.0× / 1.6
Cable ops · Norwegian Sea	0	6.6	0	—	— / 0
Other · North Pacific Ocean	0	5	0	—	0.0× / 0.2
Spills · Bering Sea	0	4	0	—	0.0× / 0.2
Surveys · Arabian Sea	0	2	0	—	0.0× / 0.8
Containers · North Atlantic Ocean	0	1	0	—	0.0× / 1.8
Derelicts · Bay of Bengal	0	0.4	0	—	0.0× / 0.2
Wrecks · Caribbean Sea	0	0.4	0	—	— / 0
Wrecks · North Pacific Ocean	0	0.4	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2008-11, 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.