Sea Ledger, July 2008

2008-07-01 to 2008-07-31 · archive

issued: 323
warning-days in force: 8,374
in force at month end: 272
sea × type cells: 209

baseline: same month, previous 5 years (2007-07, 2006-07, 2005-07, 2004-07, 2003-07)

By type

type	issued	warning-days	in force at end
Incidents	67	976.2	37
Exercises	53	563.9	14
Nav aids	39	2,055.9	65
Quakes	35	108.3	2
Cable ops	24	921.7	28
Surveys	22	2,063.1	66
Spills	16	258	8
Other	15	358.4	15
Derelicts	14	106.8	4
Containers	9	52.5	2
Wrecks	7	407.8	14
Icebergs	7	49.4	1
Debris	6	65.9	2
Missiles	4	62	2
Volcanic	2	97.6	4
Restricted	2	74.4	4
Piracy	1	38.5	1
Structures	0	62	2
Towing	0	20.1	0
Ordnance	0	31	1

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Incidents · South Pacific Ocean	15	277.9	14	52	1.8× / 8.4
Exercises · North Pacific Ocean	14	88.1	3	35	1.3× / 11.2
Exercises · Yellow Seasurge	11	79	2	32	5.0× / 2.2
Incidents · North Atlantic Oceansurge	10	132.5	4	32	3.1× / 3.2
Incidents · North Pacific Ocean	9	86.1	4	70	1.6× / 5.8
Quakes · North Pacific Ocean	9	28.4	0	—	1.4× / 6.2
Spills · Gulf of Mexico	8	160	5	39	1.9× / 4.2
Cable ops · South Atlantic Ocean	8	76.8	3	35	0.6× / 14.4
Quakes · South Pacific Ocean	8	23.1	1	28	0.8× / 10
Surveys · North Atlantic Oceansurge	7	47.5	1	29	8.8× / 0.8
Exercises · Japan Sea	6	88.7	2	33	1.4× / 4.4
Icebergs · South Atlantic Oceansurge	6	42.7	0	—	2.0× / 3
Nav aids · Inner Seas off the West Coast of Scotlandsurge	6	33.3	1	32	2.3× / 2.6
Nav aids · South Pacific Oceansurgelong running	5	158	6	418	2.3× / 2.2
Nav aids · North Atlantic Ocean	5	67.9	3	105	1.7× / 3
Incidents · Philippine Sea	5	37.2	1	71	0.8× / 6
Derelicts · South China Seasurge	5	34	0	—	6.3× / 0.8
Incidents · Coral Sea	5	24.4	0	—	1.6× / 3.2
Missiles · North Pacific Ocean	4	62	2	32	0.7× / 6
Nav aids · Irish Sea and St. George's Channel	4	33.8	1	90	1.7× / 2.4
Exercises · South Pacific Ocean	4	21.9	0	—	0.8× / 4.8
Containers · English Channelnew	4	21.7	0	—	new / 0
Nav aids · Gulf of Alaskasurge	4	13.6	2	14	10× / 0.4
Quakes · South Atlantic Oceansurge	4	12.4	1	31	2.9× / 1.4
Nav aids · Coral Seasurgelong running	3	121.9	2	597	2.5× / 1.2
Nav aids · North Sea	3	104.8	3	206	0.7× / 4.2
Incidents · Tasman Seasurge	3	56.8	2	48	2.1× / 1.4
Incidents · Arabian Seasurge	3	50.6	0	—	3.8× / 0.8
Spills · North Atlantic Ocean	3	36	1	43	1.4× / 2.2
Surveys · Japan Seanew	3	31.9	1	27	new / 0
Other · North Pacific Oceansurge	3	21.8	2	29	5.0× / 0.6
Incidents · South Atlantic Ocean	3	19.2	1	33	0.8× / 4
Derelicts · North Atlantic Oceansurge	3	14.4	1	29	3.8× / 0.8
Wrecks · English Channelsurge	3	14.3	1	25	15× / 0.2
Quakes · Bismarck Sea	3	9	0	—	1.9× / 1.6
Quakes · Coral Sea	3	9	0	—	1.7× / 1.8
Incidents · Bay of Biscaysurge	3	0.8	0	—	15× / 0.2
Cable ops · South China Sea	2	124	4	299	1.4× / 1.4
Cable ops · North Atlantic Ocean	2	78.8	3	44	0.5× / 3.8
Other · North Atlantic Oceanlong running	2	61.1	2	456	0.7× / 3
Surveys · Malacca Straitnew	2	45.1	2	22	new / 0
Exercises · South China Seanew	2	31.4	1	27	new / 0
Spills · North Pacific Ocean	2	28	0	—	1.0× / 2
Exercises · Bay of Bengal	2	27.1	0	—	0.5× / 4.2
Exercises · North Atlantic Ocean	2	27.1	0	—	0.3× / 6.6
Exercises · Baltic Sea	2	23.9	0	—	3.3× / 0.6
Wrecks · Persian Gulf	2	21	2	20	5.0× / 0.4
Debris · Gulf of Mexico	2	18.2	0	—	10× / 0.2
Cable ops · Sea of Okhotsk	2	9.9	1	9	1.3× / 1.6
Incidents · South China Sea	2	8.5	2	70	3.3× / 0.6
Exercises · South Atlantic Ocean	2	7.9	1	13	0.8× / 2.6
Surveys · English Channel	2	6.6	0	—	5.0× / 0.4
Quakes · South China Sea	2	6	0	—	5.0× / 0.4
Exercises · Indian Ocean	2	3.5	0	—	5.0× / 0.4
Nav aids · North Pacific Ocean	1	450.5	15	293	1.0× / 1
Nav aids · Gulf of Mexico	1	155.6	5	293	1.7× / 0.6
Surveys · Mediterranean Sea - Eastern Basin	1	73.4	2	188	0.3× / 3.2
Other · Mediterranean Sea - Eastern Basin	1	67.2	3	249	5.0× / 0.2
Cable ops · Mediterranean Sea - Eastern Basin	1	62.7	1	174	0.5× / 2.2
Exercises · Laccadive Sea	1	50.5	1	35	0.1× / 9.6
Incidents · Tyrrhenian Sea	1	49.8	1	47	2.5× / 0.4
Cable ops · Singapore Strait	1	49.5	2	58	new / 0
Other · South China Sealong running	1	46.5	2	701	5.0× / 0.2
Wrecks · North Sea	1	39.8	1	77	new / 0
Other · Indian Ocean	1	31.2	1	43	1.3× / 0.8
Volcanic · Indian Ocean	1	31.2	2	43	new / 0
Cable ops · Java Sea	1	31	1	42	new / 0
Volcanic · Philippine Sea	1	31	1	163	0.8× / 1.2
Cable ops · Gulf of Mexico	1	30.6	0	—	1.3× / 0.8
Cable ops · Mozambique Channel	1	30.2	1	30	new / 0
Cable ops · Bay of Biscay	1	21.5	1	21	new / 0
Surveys · Mediterranean Sea - Western Basin	1	21.5	0	—	2.5× / 0.4
Nav aids · Persian Gulf	1	18.7	1	18	5.0× / 0.2
Nav aids · Malacca Strait	1	17.5	1	17	new / 0
Surveys · North Pacific Ocean	1	16.5	0	—	2.5× / 0.4
Incidents · Indian Ocean	1	16.2	1	35	0.3× / 3.2
Incidents · Sea of Okhotsk	1	14.9	1	14	5.0× / 0.2
Incidents · Bay of Bengal	1	14.4	1	14	1.3× / 0.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	2.5× / 0.4
Spills · Philippine Sea	1	11	1	11	5.0× / 0.2
Containers · Celtic Sea	1	10.6	0	—	new / 0
Spills · Bering Sea	1	9	1	9	5.0× / 0.2
Derelicts · Indian Ocean	1	8.5	0	—	0.8× / 1.2
Restricted · Baltic Sea	1	8.4	1	8	new / 0
Cable ops · Indian Ocean	1	7.5	0	—	2.5× / 0.4
Piracy · South China Sea	1	7.5	0	—	new / 0
Exercises · Philippine Sea	1	7.4	0	—	2.5× / 0.4
Exercises · Barentsz Sea	1	7.3	0	—	new / 0
Debris · South Pacific Ocean	1	7	0	—	5.0× / 0.2
Other · Bass Strait	1	6.8	0	—	new / 0
Containers · Bass Strait	1	6.7	0	—	new / 0
Icebergs · South Pacific Ocean	1	6.7	1	6	new / 0
Derelicts · Mediterranean Sea - Western Basin	1	6.5	0	—	5.0× / 0.2
Other · Sea of Okhotsk	1	6.5	1	6	5.0× / 0.2
Containers · Tasman Sea	1	6.5	0	—	new / 0
Cable ops · Black Sea	1	6.1	0	—	1.7× / 0.6
Debris · Bay of Biscay	1	6	0	—	new / 0
Derelicts · South Atlantic Ocean	1	5.8	0	—	0.3× / 3
Containers · South Pacific Ocean	1	5.4	1	5	2.5× / 0.4
Surveys · South China Sea	1	4.5	1	4	new / 0
Nav aids · Bass Strait	1	4.2	0	—	1.3× / 0.8
Exercises · Arabian Sea	1	3.8	0	—	0.6× / 1.8
Quakes · Eastern China Sea	1	3	0	—	2.5× / 0.4
Nav aids · English Channel	1	3	0	—	0.8× / 1.2
Quakes · Indian Ocean	1	3	0	—	0.1× / 6.6
Quakes · Mediterranean Sea - Eastern Basin	1	3	0	—	new / 0
Quakes · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Quakes · Philippine Sea	1	3	0	—	0.8× / 1.2
Quakes · Sea of Okhotsk	1	3	0	—	2.5× / 0.4
Nav aids · Great Australian Bight	1	2.9	0	—	5.0× / 0.2
Surveys · Sea of Okhotsk	1	2.9	0	—	1.7× / 0.6
Derelicts · Solomon Sea	1	2.7	0	—	new / 0
Debris · South Atlantic Ocean	1	2.5	0	—	new / 0
Exercises · Gulf of Alaska	1	2.3	0	—	new / 0
Cable ops · Celtic Sea	1	2.2	1	2	0.8× / 1.2
Derelicts · Bay of Biscay	1	2.1	1	2	new / 0
Other · Inner Seas off the West Coast of Scotland	1	1.9	0	—	5.0× / 0.2
Derelicts · Coral Sea	1	1.8	1	1	2.5× / 0.4
Other · Mediterranean Sea - Western Basin	1	1.7	1	1	new / 0
Other · North Sea	1	1.7	0	—	1.7× / 0.6
Containers · Indian Ocean	1	1.6	1	1	new / 0
Cable ops · Celebes Sea	1	1.4	1	1	new / 0
Incidents · Solomon Sea	1	1.3	0	—	new / 0
Incidents · Southern Ocean	1	1.3	0	—	5.0× / 0.2
Surveys · Alboran Sea	1	1.2	1	1	new / 0
Debris · North Atlantic Ocean	1	1.2	1	37	5.0× / 0.2
Surveys · Caribbean Sea	1	1.1	0	—	new / 0
Incidents · Celtic Sea	1	1.1	1	1	1.7× / 0.6
Surveys · Bass Strait	1	1	0	—	5.0× / 0.2
Exercises · Bering Sea	1	1	1	1	5.0× / 0.2
Incidents · Timor Sea	1	0.8	1	0	new / 0
Other · Bering Sea	1	0.7	0	—	new / 0
Restricted · Alboran Sea	1	0.4	1	0	1.7× / 0.6
Wrecks · South Pacific Ocean	1	0.4	0	—	5.0× / 0.2
Nav aids · Bristol Channel	1	0.3	0	—	5.0× / 0.2
Incidents · Great Australian Bight	1	0.3	0	—	5.0× / 0.2
Other · Norwegian Sea	1	0.3	1	0	new / 0
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	1	0.3	0	—	new / 0
Surveys · Beaufort Sealong running	0	713	23	1,666	— / 0
Surveys · Arctic Oceanlong running	0	465	15	1,666	0.0× / 0.4
Nav aids · Gulf of California	0	186	6	243	— / 0
Surveys · Baffin Baylong running	0	155	5	1,764	— / 0
Nav aids · South Atlantic Ocean	0	139.4	3	254	0.0× / 3.6
Cable ops · Caribbean Sealong running	0	118.4	3	483	0.0× / 0.2
Exercises · Aegean Sea	0	93	3	187	0.0× / 0.6
Nav aids · Laccadive Sealong running	0	93	3	624	0.0× / 0.4
Surveys · Laptev Sealong running	0	93	3	800	— / 0
Wrecks · South China Sealong running	0	93	3	576	0.0× / 0.6
Nav aids · Caribbean Sealong running	0	87.4	2	561	0.0× / 0.4
Nav aids · Indian Oceanlong running	0	80.4	2	469	0.0× / 1
Incidents · Mediterranean Sea - Eastern Basin	0	67.7	1	53	0.0× / 2.4
Nav aids · Arabian Sealong running	0	62	2	597	0.0× / 0.4
Cable ops · Bay of Bengal	0	62	2	113	0.0× / 0.6
Nav aids · Gulf of Suez	0	62	2	98	0.0× / 0.6
Cable ops · Persian Gulf	0	62	2	148	0.0× / 0.4
Surveys · South Atlantic Ocean	0	62	2	83	0.0× / 2.4
Nav aids · South China Sea	0	62	2	130	— / 0
Surveys · The Northwestern Passageslong running	0	62	2	649	— / 0
Wrecks · Arabian Sealong running	0	42.3	1	831	0.0× / 0.8
Cable ops · Philippine Sea	0	42.3	0	—	— / 0
Nav aids · Celtic Sea	0	35.4	1	161	0.0× / 1.6
Cable ops · Japan Sea	0	35	1	238	— / 0
Derelicts · Arabian Sealong running	0	31	1	401	— / 0
Debris · Arctic Oceanlong running	0	31	1	1,318	— / 0
Other · Arctic Ocean	0	31	1	331	— / 0
Volcanic · Banda Sealong running	0	31	1	486	— / 0
Wrecks · Bay of Bengallong running	0	31	1	790	— / 0
Surveys · Bering Sea	0	31	1	317	— / 0
Surveys · Chukchi Sealong running	0	31	1	1,199	— / 0
Incidents · Eastern China Sea	0	31	1	37	0.0× / 0.4
Surveys · Greenland Sealong running	0	31	1	1,982	— / 0
Surveys · Gulf of Guinea	0	31	1	203	— / 0
Structures · Gulf of Suezlong running	0	31	1	470	— / 0
Surveys · Gulf of Suez	0	31	1	183	0.0× / 0.4
Other · Gulf of Thailandlong running	0	31	1	595	— / 0
Surveys · Indian Ocean	0	31	1	35	0.0× / 0.4
Wrecks · Laccadive Sea	0	31	1	121	0.0× / 0.6
Restricted · Mediterranean Sea - Eastern Basin	0	31	1	38	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	31	1	35	0.0× / 0.4
Wrecks · North Atlantic Ocean	0	31	1	65	— / 0
Wrecks · North Pacific Oceanlong running	0	31	1	505	— / 0
Ordnance · North Sea	0	31	1	46	0.0× / 1
Incidents · North Sea	0	31	1	38	0.0× / 0.2
Piracy · Persian Gulf	0	31	1	204	— / 0
Surveys · Persian Gulf	0	31	1	98	— / 0
Nav aids · Philippine Sea	0	31	1	102	0.0× / 0.6
Wrecks · South Atlantic Ocean	0	31	1	80	0.0× / 0.2
Structures · South China Sea	0	31	1	84	— / 0
Surveys · South Pacific Ocean	0	31	1	272	0.0× / 0.2
Restricted · Strait of Gibraltar	0	31	1	31	0.0× / 0.2
Nav aids · Tasman Sea	0	31	1	38	0.0× / 0.4
Cable ops · Timor Sea	0	31	1	55	— / 0
Cable ops · Norwegian Sea	0	29.6	0	—	0.0× / 0.8
Other · Irish Sea and St. George's Channel	0	27.6	0	—	— / 0
Incidents · Japan Sea	0	25.4	0	—	— / 0
Towing · Black Sea	0	20.1	0	—	— / 0
Other · Coral Sea	0	11.3	0	—	0.0× / 0.6
Incidents · Ionian Sea	0	11.3	0	—	0.0× / 0.2
Incidents · Java Sea	0	11.3	0	—	— / 0
Wrecks · Caribbean Sea	0	11	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2008-07, 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.