Sea Ledger, May 2008

2008-05-01 to 2008-05-31 · archive

issued: 349
warning-days in force: 9,573
in force at month end: 321
sea × type cells: 200

baseline: same month, previous 5 years (2007-05, 2006-05, 2005-05, 2004-05, 2003-05)

By type

type	issued	warning-days	in force at end
Cable ops	62	1,383.1	41
Incidents	56	1,503.5	45
Exercises	55	528.3	22
Nav aids	50	2,051.4	68
Quakes	33	95.6	5
Surveys	16	2,177.8	72
Spills	14	159	8
Other	12	344.8	11
Icebergs	11	64.4	2
Derelicts	9	149.7	6
Debris	7	61.6	3
Restricted	6	159	7
Ordnance	6	94.6	4
Missiles	5	62	2
Wrecks	4	465.7	16
Containers	2	8.3	1
Structures	1	85.3	3
Volcanic	0	147.4	4
Piracy	0	31	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	102.6	2	156	1.1× / 21.6
Exercises · North Pacific Ocean	12	88.6	2	34	1.5× / 8
Incidents · North Pacific Ocean	10	243.8	6	61	1.0× / 9.6
Exercises · North Atlantic Ocean	9	74.2	7	23	0.8× / 11
Icebergs · South Atlantic Oceansurge	9	61.8	2	32	2.8× / 3.2
Incidents · South Pacific Ocean	8	194.4	6	70	1.2× / 6.6
Spills · Gulf of Mexicosurge	8	78	6	44	2.7× / 3
Quakes · North Pacific Ocean	8	23.9	1	32	1.9× / 4.2
Cable ops · North Atlantic Oceansurgelong running	7	71.6	2	386	3.2× / 2.2
Incidents · North Atlantic Oceansurge	6	207.9	6	67	2.5× / 2.4
Nav aids · Gulf of Mexicosurge	6	134.3	4	232	15× / 0.4
Exercises · Bay of Bengal	6	83.8	1	66	1.3× / 4.8
Incidents · Coral Sea	6	55.9	2	33	1.3× / 4.8
Incidents · South Atlantic Ocean	6	35.5	2	39	1.9× / 3.2
Quakes · Indian Ocean	6	15.8	1	13	1.2× / 5
Nav aids · Coral Seasurgelong running	5	119.1	4	536	2.5× / 2
Ordnance · North Seasurge	5	71.8	4	52	13× / 0.4
Missiles · North Pacific Ocean	5	62	2	63	0.8× / 6.4
Nav aids · Irish Sea and St. George's Channel	5	35	1	29	1.8× / 2.8
Nav aids · Inner Seas off the West Coast of Scotlandsurge	5	34.9	1	45	2.1× / 2.4
Exercises · Philippine Seasurge	5	34	0	—	8.3× / 0.6
Debris · Tasman Seasurge	5	26	0	—	25× / 0.2
Exercises · Arabian Sea	5	15	2	36	1.4× / 3.6
Incidents · South China Sea	4	144.4	4	58	1.5× / 2.6
Cable ops · South China Seasurge	4	144	5	238	4.0× / 1
Surveys · Indian Oceansurge	4	55.7	2	103	10× / 0.4
Nav aids · North Atlantic Ocean	4	46.8	1	44	1.3× / 3.2
Cable ops · English Channelsurge	4	17.5	0	—	4.0× / 1
Exercises · South Pacific Ocean	4	16.1	1	8	1.1× / 3.6
Quakes · South Pacific Ocean	4	9	1	17	0.3× / 11.6
Incidents · Philippine Sea	3	168	2	70	0.7× / 4.4
Cable ops · Mediterranean Sea - Eastern Basin	3	131	4	113	0.8× / 3.8
Cable ops · Japan Seasurge	3	115.9	3	177	15× / 0.2
Nav aids · North Sea	3	105.2	3	145	0.8× / 4
Cable ops · Eastern China Seasurge	3	51	2	33	7.5× / 0.4
Exercises · Yellow Sea	3	47.1	2	34	1.4× / 2.2
Cable ops · Norwegian Seanew	3	44.2	1	48	new / 0
Spills · North Pacific Oceansurge	3	42	0	—	2.1× / 1.4
Other · South Atlantic Oceansurge	3	28.3	1	28	3.8× / 0.8
Exercises · South Atlantic Ocean	3	24.2	1	37	0.8× / 3.8
Quakes · North Atlantic Oceansurge	3	8.3	1	8	5.0× / 0.6
Nav aids · North Pacific Ocean	2	470.9	15	232	10× / 0.2
Nav aids · South Pacific Ocean	2	133.2	4	357	1.1× / 1.8
Surveys · North Atlantic Ocean	2	105.1	3	298	0.8× / 2.6
Incidents · Mediterranean Sea - Eastern Basin	2	96.6	4	45	0.8× / 2.6
Cable ops · Caribbean Seanewlong running	2	93.8	3	422	new / 0
Nav aids · South Atlantic Ocean	2	89	4	193	1.0× / 2
Surveys · South Atlantic Ocean	2	45.6	2	22	0.3× / 5.8
Nav aids · Arabian Sealong running	2	33.7	3	536	1.7× / 1.2
Nav aids · Tasman Sea	2	32.2	0	—	2.0× / 1
Surveys · Alboran Seanew	2	32	2	16	new / 0
Surveys · Mozambique Channelnew	2	31.2	1	25	new / 0
Cable ops · North Pacific Oceannew	2	30	2	24	new / 0
Spills · North Atlantic Ocean	2	25	2	40	0.8× / 2.6
Restricted · Arctic Oceannew	2	23.2	2	11	new / 0
Exercises · Japan Sea	2	20.3	2	34	1.3× / 1.6
Exercises · Baltic Sea	2	13.5	0	—	5.0× / 0.4
Derelicts · South Pacific Ocean	2	11.2	1	21	3.3× / 0.6
Nav aids · English Channel	2	9.9	0	—	0.8× / 2.4
Other · North Sea	2	9.8	0	—	1.4× / 1.4
Exercises · Laccadive Sea	2	9.4	1	21	0.2× / 8.4
Quakes · Coral Sea	2	7.6	0	—	0.8× / 2.4
Quakes · Philippine Sea	2	6	0	—	1.1× / 1.8
Quakes · Solomon Sea	2	6	0	—	1.1× / 1.8
Quakes · South Atlantic Ocean	2	5.2	1	33	1.3× / 1.6
Icebergs · North Atlantic Ocean	2	2.6	0	—	0.7× / 3
Nav aids · Gulf of Suez	1	91.2	3	66	5.0× / 0.2
Other · Mediterranean Sea - Eastern Basin	1	62.6	3	188	0.6× / 1.8
Other · North Atlantic Oceanlong running	1	52.4	2	395	0.4× / 2.6
Nav aids · South China Sea	1	51.6	2	69	new / 0
Incidents · Laccadive Sea	1	50.5	2	31	5.0× / 0.2
Surveys · Arabian Sea	1	48.6	2	169	2.5× / 0.4
Cable ops · Arabian Sea	1	44.5	1	173	0.4× / 2.6
Restricted · North Atlantic Ocean	1	39.9	1	61	0.8× / 1.2
Cable ops · South Pacific Ocean	1	37.3	1	37	new / 0
Cable ops · Gulf of Mexico	1	35.6	1	207	5.0× / 0.2
Incidents · Southern Ocean	1	33.7	1	76	5.0× / 0.2
Nav aids · Celtic Sea	1	33	1	100	0.5× / 2
Other · South China Sealong running	1	31.2	1	640	new / 0
Cable ops · Andaman or Burma Sea	1	31	1	52	new / 0
Restricted · South Atlantic Ocean	1	30.8	1	36	2.5× / 0.4
Cable ops · Gulf of Suez	1	30	0	—	2.5× / 0.4
Nav aids · Mozambique Channel	1	29.1	1	29	1.0× / 1
Wrecks · South Atlantic Ocean	1	28.8	1	186	5.0× / 0.2
Incidents · Sea of Okhotsk	1	25.4	1	25	new / 0
Derelicts · Bay of Biscay	1	24.9	1	24	new / 0
Cable ops · Philippine Sea	1	24.5	1	48	new / 0
Structures · South China Sea	1	23.3	1	23	new / 0
Surveys · Sea of Marmara	1	21.3	1	21	1.3× / 0.8
Surveys · Tasman Sea	1	21.3	1	112	2.5× / 0.4
Restricted · Laccadive Sea	1	19.5	1	19	new / 0
Incidents · Persian Gulf	1	18.1	1	18	5.0× / 0.2
Wrecks · North Sea	1	16.2	1	16	new / 0
Spills · Philippine Sea	1	14	0	—	new / 0
Derelicts · South China Sea	1	13.5	0	—	2.5× / 0.4
Surveys · Gulf of Mexico	1	13.4	0	—	new / 0
Restricted · Persian Gulf	1	12.2	1	12	2.5× / 0.4
Derelicts · Bay of Bengal	1	11.8	0	—	1.7× / 0.6
Cable ops · Mozambique Channel	1	11.1	1	11	new / 0
Ordnance · Gulf of Thailand	1	8.8	0	—	1.7× / 0.6
Nav aids · Great Australian Bight	1	7.6	0	—	2.5× / 0.4
Incidents · Arafura Sea	1	7.4	0	—	1.7× / 0.6
Other · Philippine Sea	1	6.7	0	—	5.0× / 0.2
Derelicts · Andaman or Burma Sea	1	6.6	0	—	new / 0
Derelicts · Sulu Sea	1	6.6	1	6	new / 0
Incidents · Indian Ocean	1	6.2	0	—	0.4× / 2.6
Derelicts · Gulf of Mexico	1	6	0	—	1.3× / 0.8
Exercises · Andaman or Burma Sea	1	4.9	0	—	1.3× / 0.8
Quakes · Banda Sea	1	4.8	0	—	1.7× / 0.6
Containers · Celtic Sea	1	4.8	0	—	new / 0
Derelicts · South Atlantic Ocean	1	4.7	1	33	0.4× / 2.4
Wrecks · Caribbean Sea	1	4.5	1	4	5.0× / 0.2
Wrecks · North Atlantic Ocean	1	4.5	1	4	new / 0
Cable ops · Celebes Sea	1	4.4	1	4	new / 0
Exercises · Gulf of Mexico	1	4.2	0	—	2.5× / 0.4
Containers · Bay of Biscay	1	3.5	1	3	5.0× / 0.2
Incidents · Red Sea	1	3.5	1	3	new / 0
Quakes · Bering Sea	1	3	0	—	2.5× / 0.4
Quakes · Gulf of Alaska	1	3	0	—	new / 0
Quakes · Japan Sea	1	3	0	—	5.0× / 0.2
Other · Great Australian Bight	1	2.7	0	—	new / 0
Other · Bering Sea	1	2.5	0	—	new / 0
Nav aids · Bristol Channel	1	1.9	0	—	0.6× / 1.6
Nav aids · Japan Sea	1	1.8	1	1	new / 0
Debris · Philippine Sea	1	1.4	1	1	5.0× / 0.2
Incidents · Great Australian Bight	1	1.3	0	—	5.0× / 0.2
Incidents · Java Sea	1	1.3	1	1	new / 0
Other · English Channel	1	1.2	0	—	5.0× / 0.2
Debris · South Atlantic Ocean	1	1.2	1	1	new / 0
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	1	1.2	0	—	new / 0
Nav aids · Gulf of Alaska	1	0.6	0	—	new / 0
Nav aids · Bass Strait	1	0.2	1	0	5.0× / 0.2
Incidents · Eastern China Sea	1	0.2	0	—	new / 0
Incidents · Tasman Sea	1	0	0	—	0.6× / 1.6
Surveys · Beaufort Sealong running	0	713	23	1,605	0.0× / 0.2
Surveys · Arctic Oceanlong running	0	465	15	1,605	— / 0
Cable ops · Bay of Bengal	0	246.7	7	193	0.0× / 1.6
Nav aids · Gulf of California	0	186	6	182	— / 0
Surveys · Baffin Baylong running	0	155	5	1,703	— / 0
Nav aids · Caribbean Sealong running	0	124	4	500	0.0× / 1
Nav aids · Indian Oceanlong running	0	124	4	729	0.0× / 2.2
Exercises · Aegean Sea	0	93	3	126	0.0× / 2.4
Wrecks · Arabian Sealong running	0	93	3	770	0.0× / 0.2
Surveys · Laptev Sealong running	0	93	3	739	0.0× / 0.4
Wrecks · South China Sealong running	0	93	3	515	— / 0
Derelicts · Arabian Sea	0	62	2	340	0.0× / 0.4
Incidents · Bay of Bengal	0	62	2	44	0.0× / 0.8
Surveys · Gulf of Guinea	0	62	2	142	0.0× / 0.2
Nav aids · Laccadive Sealong running	0	62	2	563	0.0× / 0.6
Wrecks · Laccadive Sealong running	0	62	2	472	— / 0
Surveys · The Northwestern Passageslong running	0	62	2	588	— / 0
Incidents · Arabian Sea	0	54.4	1	52	0.0× / 0.2
Wrecks · Persian Gulf	0	39.7	0	—	0.0× / 0.4
Incidents · Adriatic Sea	0	31	1	47	0.0× / 0.2
Nav aids · Andaman or Burma Sea	0	31	1	302	— / 0
Surveys · Andaman or Burma Sea	0	31	1	44	— / 0
Debris · Arctic Oceanlong running	0	31	1	1,257	— / 0
Other · Arctic Ocean	0	31	1	270	— / 0
Volcanic · Banda Sealong running	0	31	1	425	— / 0
Restricted · Bay of Bengallong running	0	31	1	774	— / 0
Wrecks · Bay of Bengallong running	0	31	1	729	0.0× / 0.6
Incidents · Bay of Biscay	0	31	1	42	0.0× / 0.8
Surveys · Bering Sea	0	31	1	256	— / 0
Other · Caribbean Sea	0	31	1	325	— / 0
Surveys · Chukchi Sealong running	0	31	1	1,138	— / 0
Surveys · Greenland Sealong running	0	31	1	1,921	— / 0
Structures · Gulf of Mexico	0	31	1	261	0.0× / 0.2
Structures · Gulf of Suezlong running	0	31	1	409	— / 0
Surveys · Gulf of Suez	0	31	1	122	— / 0
Other · Gulf of Thailandlong running	0	31	1	534	— / 0
Cable ops · Indian Ocean	0	31	1	33	0.0× / 0.8
Other · Irish Sea and St. George's Channel	0	31	1	36	0.0× / 0.4
Surveys · Mediterranean Sea - Eastern Basin	0	31	1	127	0.0× / 2.2
Volcanic · North Pacific Ocean	0	31	1	88	— / 0
Wrecks · North Pacific Oceanlong running	0	31	1	444	0.0× / 0.2
Cable ops · Persian Gulf	0	31	1	87	0.0× / 0.2
Nav aids · Persian Gulf	0	31	1	297	0.0× / 0.6
Piracy · Persian Gulf	0	31	1	143	— / 0
Surveys · Persian Gulf	0	31	1	37	0.0× / 0.8
Nav aids · Philippine Sea	0	31	1	41	0.0× / 0.2
Volcanic · Philippine Sea	0	31	1	102	— / 0
Wrecks · Philippine Sealong running	0	31	1	369	0.0× / 0.2
Volcanic · Red Sea	0	31	1	243	— / 0
Wrecks · Red Sealong running	0	31	1	710	— / 0
Cable ops · Singapore Strait	0	31	1	50	— / 0
Surveys · South Pacific Ocean	0	31	1	211	0.0× / 0.2
Incidents · Tyrrhenian Sea	0	31	1	48	0.0× / 0.4
Volcanic · Savu Sea	0	23.4	0	—	— / 0
Other · South Pacific Ocean	0	23.4	0	—	0.0× / 0.4
Cable ops · Timor Sea	0	23.4	0	—	— / 0
Ordnance · Baltic Sea	0	14	0	—	— / 0
Surveys · Celtic Sea	0	4.6	0	—	0.0× / 1
Derelicts · Indian Ocean	0	2.4	0	—	0.0× / 0.6
Restricted · Sea of Marmara	0	2.4	0	—	— / 0
Debris · Indian Ocean	0	2	0	—	— / 0
Surveys · Black Sea	0	1	0	—	0.0× / 0.2
Cable ops · Black Sea	0	0	0	—	0.0× / 0.4
Cable ops · Gulf of Aden	0	0	0	—	— / 0
Cable ops · Laccadive Sea	0	0	0	—	0.0× / 1
Debris · Mediterranean Sea - Eastern Basin	0	0	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2008-05, 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.