Sea Ledger, July 2010

2010-07-01 to 2010-07-31 · archive

issued: 402
warning-days in force: 7,766
in force at month end: 250
sea × type cells: 174

baseline: same month, previous 5 years (2009-07, 2008-07, 2007-07, 2006-07, 2005-07)

By type

type	issued	warning-days	in force at end
Exercises	66	670.3	17
Nav aids	59	1,433.1	45
Incidents	59	968.6	31
Cable ops	46	1,251.9	41
Surveys	44	2,055.6	63
Quakes	44	131.1	5
Missiles	21	134.9	6
Ordnance	11	194.8	9
Derelicts	10	31.8	1
Other	9	263.1	9
Piracy	9	121.6	4
Spills	7	68	4
Wrecks	6	291.1	11
Restricted	6	69.7	2
Debris	4	15.4	0
Containers	1	3	0
Structures	0	31	1
Volcanic	0	31	1

By sea and type · 174 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Surveys · Beaufort Seanewlong running	16	701.4	19	2,396	new / 0
Cable ops · South Atlantic Oceanlong running	16	302.6	10	630	0.7× / 22.2
Incidents · North Atlantic Oceansurge	12	333.6	10	77	2.4× / 5
Incidents · North Pacific Ocean	12	141.7	4	48	1.6× / 7.4
Nav aids · North Atlantic Oceansurgelong running	10	166.9	6	518	3.9× / 2.6
Exercises · North Pacific Ocean	10	93.9	1	35	0.7× / 14.2
Exercises · South Atlantic Oceansurge	10	73.3	1	36	2.0× / 5
Incidents · South Atlantic Oceansurge	10	36	0	—	2.5× / 4
Nav aids · North Sea	9	170.5	5	135	1.7× / 5.2
Missiles · North Pacific Ocean	9	78.2	2	34	1.7× / 5.4
Quakes · South Pacific Ocean	9	30.3	0	—	1.0× / 9.2
Quakes · Celebes Seanew	9	24.1	1	8	new / 0
Exercises · Japan Sea	8	80.1	2	37	1.4× / 5.8
Surveys · Arctic Oceansurgelong running	7	631.2	21	2,396	18× / 0.4
Exercises · Bay of Bengal	7	38.1	1	30	1.9× / 3.6
Nav aids · South Atlantic Oceansurgelong running	6	329.7	10	710	2.3× / 2.6
Cable ops · North Atlantic Ocean	6	92.3	3	50	1.6× / 3.8
Quakes · North Pacific Ocean	6	21.1	1	33	1.0× / 6.2
Quakes · Solomon Seasurge	6	18.8	0	—	10× / 0.6
Surveys · Baffin Baynewlong running	5	155	5	2,494	new / 0
Incidents · Caribbean Seanew	5	64.9	3	63	new / 0
Restricted · Mediterranean Sea - Eastern Basinnew	5	7.7	0	—	new / 0
Cable ops · South China Seasurge	4	173.2	4	59	2.5× / 1.6
Cable ops · Mediterranean Sea - Eastern Basin	4	123	5	149	1.5× / 2.6
Cable ops · North Seasurge	4	89	5	59	5.0× / 0.8
Nav aids · English Channelsurge	4	68.1	2	100	3.3× / 1.2
Nav aids · North Pacific Oceansurge	4	66.5	2	43	4.0× / 1
Surveys · South Atlantic Ocean	4	47.4	2	62	1.5× / 2.6
Nav aids · Gulf of Mexicosurge	4	44.5	0	—	3.3× / 1.2
Exercises · Yellow Sea	4	40.1	1	37	0.9× / 4.6
Nav aids · Coral Seasurge	4	38.3	1	37	2.9× / 1.4
Exercises · Laccadive Sea	4	34.4	0	—	0.6× / 6.6
Missiles · South Atlantic Oceannew	4	27.9	2	30	new / 0
Exercises · South China Seasurge	4	26.9	2	37	6.7× / 0.6
Surveys · North Atlantic Oceansurge	4	19.1	2	9	2.0× / 2
Piracy · Red Seanew	4	17.7	3	40	new / 0
Exercises · North Atlantic Ocean	4	12.2	0	—	0.9× / 4.6
Surveys · The Northwestern Passagesnewlong running	3	149.2	3	1,379	new / 0
Wrecks · The Northwestern Passagesnewlong running	3	93	3	693	new / 0
Incidents · Gulf of Mexiconew	3	91.5	2	64	new / 0
Exercises · Philippine Seasurge	3	76.1	3	40	3.8× / 0.8
Other · South Atlantic Oceansurge	3	57.7	1	80	5.0× / 0.6
Incidents · Tyrrhenian Seasurge	3	50	3	22	5.0× / 0.6
Nav aids · Irish Sea and St. George's Channel	3	48.6	1	285	1.3× / 2.4
Ordnance · Gulf of Adennew	3	45.5	2	62	new / 0
Exercises · Arabian Seasurge	3	33.1	2	34	2.5× / 1.2
Spills · Gulf of Mexico	3	31	1	22	0.5× / 6
Piracy · South China Seasurge	3	30.7	0	—	15× / 0.2
Incidents · Coral Sea	3	18.8	0	—	1.7× / 1.8
Missiles · Bay of Bengalnew	3	11	0	—	new / 0
Nav aids · Mediterranean Sea - Western Basinsurge	3	9.6	1	7	7.5× / 0.4
Quakes · Bering Seasurge	3	9	0	—	7.5× / 0.4
Nav aids · The Coastal Waters of Southeast Alaska and British Columbiasurge	3	7.9	0	—	3.0× / 1
Nav aids · South Pacific Ocean	2	173.7	7	198	0.8× / 2.6
Cable ops · Persian Gulf	2	57.3	2	37	5.0× / 0.4
Cable ops · Sea of Okhotsk	2	44	2	30	1.3× / 1.6
Surveys · North Sea	2	42.2	1	150	1.4× / 1.4
Cable ops · Celtic Sea	2	31	1	38	1.0× / 2
Incidents · Mediterranean Sea - Western Basinnew	2	29.9	2	22	new / 0
Exercises · Gulf of Mexiconew	2	28.6	0	—	new / 0
Spills · North Atlantic Ocean	2	17	2	14	0.7× / 2.8
Exercises · Celtic Sea	2	10.2	0	—	3.3× / 0.6
Incidents · Philippine Sea	2	10	1	73	0.4× / 5.2
Missiles · Black Seanew	2	8.8	0	—	new / 0
Ordnance · North Pacific Ocean	2	7.9	1	17	5.0× / 0.4
Incidents · Indian Ocean	2	6.9	1	35	0.8× / 2.4
Exercises · Baltic Sea	2	6.5	0	—	1.7× / 1.2
Quakes · Banda Sea	2	6	0	—	3.3× / 0.6
Debris · Indian Ocean	2	6	0	—	10× / 0.2
Quakes · Philippine Sea	2	6	0	—	1.7× / 1.2
Derelicts · Gulf of Mexiconew	2	5.2	0	—	new / 0
Ordnance · Philippine Seanew	2	5.1	1	6	new / 0
Derelicts · Coral Sea	2	4.3	1	8	5.0× / 0.4
Derelicts · North Atlantic Ocean	2	3.5	0	—	1.7× / 1.2
Quakes · South Atlantic Ocean	2	3.5	1	11	1.1× / 1.8
Nav aids · Timor Sea	2	2.4	0	—	10× / 0.2
Missiles · North Atlantic Oceannew	2	1.3	2	0	new / 0
Cable ops · Gulf of Mexico	1	109	3	80	0.8× / 1.2
Incidents · South Pacific Ocean	1	64.1	1	54	0.1× / 9
Restricted · Strait of Gibraltar	1	62	2	32	5.0× / 0.2
Other · Arctic Oceanlong running	1	58.7	2	1,061	new / 0
Incidents · South China Sea	1	55.1	2	32	0.8× / 1.2
Nav aids · Celtic Sea	1	40.7	1	118	0.7× / 1.4
Other · Mediterranean Sea - Eastern Basin	1	36.5	2	200	1.7× / 0.6
Ordnance · Ionian Sea	1	33.6	2	45	new / 0
Incidents · Arabian Sea	1	31.4	1	56	1.7× / 0.6
Cable ops · Sulu Sea	1	23	1	23	2.5× / 0.4
Piracy · Gulf of Aden	1	21.6	0	—	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	18.5	1	18	0.5× / 2.2
Incidents · Eastern China Sea	1	15.3	1	15	2.5× / 0.4
Exercises · Caribbean Sea	1	14.3	0	—	1.7× / 0.6
Spills · North Pacific Ocean	1	14	0	—	0.4× / 2.6
Cable ops · Labrador Sea	1	11.3	1	11	new / 0
Piracy · Java Sea	1	10.4	0	—	new / 0
Nav aids · Arafura Sea	1	10	0	—	5.0× / 0.2
Surveys · Sea of Okhotsk	1	9.8	1	9	0.8× / 1.2
Ordnance · Black Sea	1	8.4	1	8	new / 0
Surveys · Philippine Sea	1	8.4	1	8	new / 0
Exercises · Persian Gulf	1	8.2	0	—	5.0× / 0.2
Other · Celtic Sea	1	7.7	1	93	new / 0
Incidents · Gulf of Guinea	1	7.6	0	—	5.0× / 0.2
Cable ops · Arafura Sea	1	7.3	0	—	new / 0
Spills · Gulf of Alaska	1	6	1	6	5.0× / 0.2
Wrecks · Mediterranean Sea - Eastern Basin	1	5.5	1	5	2.5× / 0.4
Cable ops · Indian Ocean	1	3.7	0	—	1.0× / 1
Wrecks · English Channel	1	3.5	1	3	1.3× / 0.8
Wrecks · Coral Sea	1	3.1	0	—	new / 0
Containers · Bay of Biscay	1	3	0	—	new / 0
Debris · Coral Sea	1	3	0	—	new / 0
Quakes · Coral Sea	1	3	0	—	0.6× / 1.8
Derelicts · Indian Ocean	1	3	0	—	0.8× / 1.2
Debris · North Atlantic Ocean	1	3	0	—	5.0× / 0.2
Derelicts · North Pacific Ocean	1	3	0	—	1.3× / 0.8
Quakes · Persian Gulf	1	3	0	—	new / 0
Quakes · Sea of Okhotsk	1	3	0	—	2.5× / 0.4
Derelicts · South China Sea	1	3	0	—	0.8× / 1.2
Other · South Pacific Ocean	1	3	0	—	2.5× / 0.4
Missiles · Laccadive Sea	1	2.2	0	—	new / 0
Ordnance · Mediterranean Sea - Eastern Basin	1	2.1	0	—	new / 0
Quakes · Southern Ocean	1	1.8	1	1	1.7× / 0.6
Other · English Channel	1	1.7	0	—	2.5× / 0.4
Quakes · Molukka Sea	1	1.5	1	1	0.7× / 1.4
Nav aids · Beaufort Sea	1	1	1	0	new / 0
Other · The Northwestern Passages	1	1	1	0	new / 0
Ordnance · Mediterranean Sea - Western Basin	1	0.9	0	—	5.0× / 0.2
Exercises · South Pacific Ocean	1	0.7	1	33	0.2× / 4.8
Cable ops · Beaufort Sea	1	0.6	1	0	new / 0
Derelicts · South Atlantic Ocean	1	0.4	0	—	0.7× / 1.4
Nav aids · Bay of Bengal	1	0.3	1	0	1.3× / 0.8
Nav aids · Gulf of Alaska	1	0.1	0	—	0.4× / 2.8
Exercises · Aegean Sea	0	93	3	213	0.0× / 0.6
Surveys · Laptev Sealong running	0	93	3	1,530	— / 0
Other · North Atlantic Ocean	0	63.4	1	77	0.0× / 1.2
Nav aids · Gulf of Suezlong running	0	62.7	2	575	— / 0
Cable ops · Gulf of Guinea	0	62	2	62	0.0× / 0.2
Nav aids · Malacca Strait	0	62	2	130	0.0× / 0.2
Wrecks · South China Sealong running	0	62	2	1,102	0.0× / 0.6
Ordnance · English Channel	0	58.5	1	137	0.0× / 0.4
Cable ops · Ceram Sea	0	39.4	0	—	— / 0
Nav aids · Arabian Sea	0	35	1	227	0.0× / 0.2
Ordnance · North Sealong running	0	32.8	1	638	0.0× / 0.8
Wrecks · Arabian Sea	0	31	1	227	0.0× / 0.8
Surveys · Bering Sealong running	0	31	1	653	— / 0
Surveys · Chukchi Sealong running	0	31	1	1,929	— / 0
Surveys · Greenland Sealong running	0	31	1	2,712	— / 0
Nav aids · Mozambique Channel	0	31	1	102	0.0× / 0.2
Surveys · Mozambique Channel	0	31	1	101	0.0× / 0.2
Wrecks · North Atlantic Oceanlong running	0	31	1	381	0.0× / 0.2
Structures · North Sea	0	31	1	103	— / 0
Wrecks · North Sea	0	31	1	71	0.0× / 0.2
Piracy · Persian Gulflong running	0	31	1	934	— / 0
Volcanic · Philippine Sea	0	31	1	155	0.0× / 1.2
Nav aids · Sea of Okhotsk	0	31	1	42	0.0× / 0.2
Wrecks · South Atlantic Ocean	0	31	1	80	0.0× / 0.2
Other · South China Sealong running	0	31	1	745	0.0× / 0.4
Cable ops · Tasman Sea	0	31	1	59	0.0× / 0.6
Surveys · South China Sea	0	30	0	—	0.0× / 0.2
Cable ops · Yellow Sea	0	25	0	—	— / 0
Surveys · South Pacific Ocean	0	16.4	0	—	0.0× / 0.2
Cable ops · Arabian Sea	0	14.7	0	—	0.0× / 0.4
Nav aids · Inner Seas off the West Coast of Scotland	0	13.8	0	—	0.0× / 4.2
Cable ops · Mediterranean Sea - Western Basin	0	12.5	0	—	0.0× / 0.6
Piracy · Singapore Strait	0	10.2	0	—	0.0× / 0.4
Derelicts · Arabian Sea	0	9.4	0	—	— / 0
Nav aids · Caribbean Sea	0	9.4	0	—	0.0× / 0.4
Nav aids · Gulf of California	0	9.4	0	—	— / 0
Incidents · Mediterranean Sea - Eastern Basin	0	9.4	0	—	0.0× / 1.2
Surveys · Gulf of California	0	9	0	—	— / 0
Missiles · Japan Sea	0	5.5	0	—	— / 0
Debris · Arctic Ocean	0	3.4	0	—	— / 0
Other · Gulf of Mexico	0	2.4	0	—	— / 0
Incidents · Ionian Sea	0	2.4	0	—	— / 0
Surveys · Gulf of Mexico	0	1	0	—	— / 0
Exercises · Black Sea	0	0.6	0	—	0.0× / 1.4

Cite: seahazards.com Sea Ledger, 2010-07, 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.