Sea Ledger, July 2006

2006-07-01 to 2006-07-31 · archive

issued: 336
warning-days in force: 11,853
in force at month end: 406
sea × type cells: 223

baseline: same month, previous 5 years (2005-07, 2004-07, 2003-07, 2002-07, 2001-07)

By type

type	issued	warning-days	in force at end
Exercises	58	857	24
Incidents	56	1,647	67
Quakes	51	151	5
Nav aids	40	3,596.7	120
Cable ops	39	629	21
Derelicts	22	158.1	10
Surveys	19	1,196.1	42
Spills	12	164	5
Other	8	732.3	23
Icebergs	8	45.1	2
Missiles	6	62	2
Wrecks	5	1,670.4	57
Containers	5	25.6	0
Restricted	2	247.5	8
Ordnance	2	110.1	3
Debris	2	67.9	2
Volcanic	1	121.6	3
Structures	0	310	10
Piracy	0	62	2

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	21	136.3	4	53	1.5× / 14.2
Quakes · Indian Oceansurge	20	58.9	1	19	6.3× / 3.2
Exercises · North Pacific Oceansurge	18	100.9	4	36	2.3× / 8
Incidents · North Pacific Ocean	13	495.3	20	60	1.9× / 6.8
Exercises · Laccadive Sea	12	63.2	2	32	1.7× / 7
Incidents · South Pacific Ocean	10	109.7	6	74	1.6× / 6.4
Derelicts · Mediterranean Sea - Eastern Basinsurge	9	64.6	2	37	3.0× / 3
Quakes · South Pacific Ocean	9	26.9	1	28	1.1× / 7.8
Incidents · Philippine Sea	8	249.5	11	63	1.1× / 7.4
Icebergs · Southern Oceansurge	8	45.1	2	33	6.7× / 1.2
Nav aids · North Sealong running	7	252.4	9	451	1.6× / 4.4
Quakes · North Pacific Ocean	7	18.9	1	30	1.4× / 5
Nav aids · South Pacific Oceansurge	6	384.9	14	207	2.7× / 2.2
Missiles · North Pacific Ocean	6	62	2	62	1.1× / 5.6
Exercises · South Pacific Oceansurge	6	22.6	0	—	2.1× / 2.8
Spills · North Atlantic Oceansurge	4	56	0	—	4.0× / 1
Incidents · Mediterranean Sea - Eastern Basinlong running	4	55.1	4	468	1.8× / 2.2
Surveys · Celtic Sea	4	44.1	2	31	1.7× / 2.4
Spills · North Pacific Oceansurge	4	38	2	20	4.0× / 1
Cable ops · English Channelsurge	4	30.2	1	31	4.0× / 1
Derelicts · Arafura Seasurge	4	20.4	2	17	10× / 0.4
Nav aids · Inner Seas off the West Coast of Scotland	3	208.9	7	349	1.3× / 2.4
Nav aids · Indian Oceansurge	3	129.2	5	77	7.5× / 0.4
Incidents · Tasman Seasurge	3	96.4	3	60	3.0× / 1
Nav aids · Irish Sea and St. George's Channel	3	95.4	3	144	1.4× / 2.2
Exercises · Yellow Seasurge	3	82.2	2	36	2.5× / 1.2
Incidents · Coral Sea	3	79.8	2	65	0.6× / 5
Exercises · Japan Sea	3	77.8	2	36	0.8× / 3.6
Nav aids · Celtic Sea	3	76.4	3	235	1.3× / 2.4
Exercises · Bay of Bengal	3	39.2	1	32	0.8× / 3.8
Spills · Gulf of Mexico	3	38	1	41	0.9× / 3.4
Exercises · South Atlantic Ocean	3	25.3	0	—	1.9× / 1.6
Incidents · Adriatic Seasurge	3	15.5	1	14	7.5× / 0.4
Quakes · Bismarck Seasurge	3	9	0	—	2.5× / 1.2
Other · North Atlantic Ocean	3	8	0	—	0.7× / 4.6
Wrecks · Arabian Sealong running	2	209.8	8	699	10× / 0.2
Surveys · North Sea	2	92.2	4	84	0.3× / 6
Incidents · Indian Oceanlong running	2	88.9	4	471	0.6× / 3.2
Nav aids · South Atlantic Oceanlong running	2	83.7	3	597	0.3× / 6.6
Incidents · North Atlantic Ocean	2	80.6	2	73	0.4× / 5.4
Incidents · Eastern China Seanew	2	47.9	2	60	new / 0
Surveys · Mediterranean Sea - Eastern Basin	2	45.9	2	113	0.6× / 3.6
Nav aids · North Atlantic Ocean	2	32.8	1	195	0.5× / 4.2
Exercises · North Atlantic Ocean	2	19.4	0	—	0.2× / 8.2
Cable ops · Norwegian Sea	2	14	2	10	2.0× / 1
Cable ops · Mediterranean Sea - Eastern Basin	2	13.5	1	63	1.7× / 1.2
Containers · Arabian Sea	2	13.1	0	—	5.0× / 0.4
Derelicts · North Pacific Ocean	2	12.2	1	22	1.4× / 1.4
Surveys · Bay of Biscay	2	11.5	0	—	5.0× / 0.4
Derelicts · South Atlantic Ocean	2	11	2	5	0.6× / 3.4
Derelicts · South Pacific Ocean	2	8.9	1	22	1.1× / 1.8
Containers · South Atlantic Ocean	2	6.4	0	—	10× / 0.2
Quakes · Molukka Sea	2	6	0	—	2.0× / 1
Cable ops · Celtic Sea	2	5.5	0	—	0.3× / 6.6
Exercises · Celtic Seanew	2	1.5	0	—	new / 0
Nav aids · Bay of Bengallong running	1	445.5	14	523	0.6× / 1.8
Nav aids · Arabian Sealong running	1	282.1	9	712	1.7× / 0.6
Nav aids · English Channellong running	1	186	6	451	0.7× / 1.4
Wrecks · Mediterranean Sea - Eastern Basinlong running	1	182.3	6	763	1.7× / 0.6
Wrecks · South China Sealong running	1	159.7	6	702	5.0× / 0.2
Nav aids · Laccadive Sea	1	140.5	4	216	5.0× / 0.2
Incidents · South Atlantic Ocean	1	125.1	4	131	0.2× / 5
Nav aids · Gulf of Mexicolong running	1	104.6	3	476	new / 0
Other · Persian Gulf	1	100.1	4	292	1.3× / 0.8
Nav aids · Coral Sealong running	1	72.4	3	757	0.6× / 1.8
Volcanic · Philippine Sea	1	59.6	1	158	1.0× / 1
Surveys · Bay of Bengal	1	54.5	2	159	2.5× / 0.4
Cable ops · Sea of Okhotsk	1	50.9	1	47	1.3× / 0.8
Other · South Pacific Ocean	1	49.1	2	35	2.5× / 0.4
Nav aids · Tyrrhenian Sealong running	1	44.6	2	620	1.0× / 1
Other · South China Sea	1	37.9	1	47	2.5× / 0.4
Cable ops · Persian Gulf	1	37	1	154	0.8× / 1.2
Wrecks · Persian Gulf	1	33.6	2	204	2.5× / 0.4
Surveys · South Pacific Ocean	1	33.4	2	105	1.7× / 0.6
Surveys · North Pacific Ocean	1	31.6	2	364	2.5× / 0.4
Cable ops · Gulf of Thailand	1	31.3	2	38	new / 0
Incidents · Celtic Sea	1	31.2	1	31	5.0× / 0.2
Nav aids · Great Australian Bight	1	31.2	1	39	new / 0
Surveys · English Channel	1	28.9	0	—	0.3× / 3
Restricted · Alboran Sea	1	28.4	1	28	new / 0
Incidents · Southern Ocean	1	28.4	1	75	new / 0
Exercises · Black Sea	1	27.1	1	60	0.5× / 2.2
Derelicts · North Atlantic Ocean	1	21.6	1	35	0.6× / 1.8
Cable ops · North Sea	1	21.6	0	—	0.3× / 3.6
Cable ops · Eastern China Sea	1	17.5	1	17	0.6× / 1.6
Surveys · Tyrrhenian Sea	1	13.5	0	—	0.8× / 1.2
Surveys · Gulf of Suez	1	13.3	1	13	new / 0
Derelicts · Indian Ocean	1	13.2	1	13	1.7× / 0.6
Incidents · Bering Sea	1	13	1	12	new / 0
Surveys · Yellow Sea	1	12.9	1	12	new / 0
Nav aids · Bering Sea	1	12.6	1	12	new / 0
Other · Tyrrhenian Sea	1	12.1	0	—	5.0× / 0.2
Other · Coral Sea	1	11.8	0	—	2.5× / 0.4
Cable ops · Irish Sea and St. George's Channel	1	11	0	—	0.6× / 1.6
Ordnance · North Pacific Ocean	1	9.1	0	—	2.5× / 0.4
Cable ops · Indian Ocean	1	7.1	1	7	new / 0
Surveys · Black Sea	1	6.7	1	6	5.0× / 0.2
Incidents · Tyrrhenian Sea	1	6.6	1	6	new / 0
Derelicts · Mediterranean Sea - Western Basin	1	6.2	0	—	5.0× / 0.2
Containers · Tyrrhenian Sea	1	6.1	0	—	new / 0
Surveys · Indian Ocean	1	5.6	0	—	new / 0
Quakes · Solomon Sea	1	5.3	0	—	0.7× / 1.4
Exercises · Caribbean Sea	1	3.7	0	—	5.0× / 0.2
Debris · Irish Sea and St. George's Channel	1	3.2	0	—	5.0× / 0.2
Quakes · Banda Sea	1	3	0	—	1.3× / 0.8
Quakes · Coral Sea	1	3	0	—	0.6× / 1.6
Quakes · Gulf of Tomini	1	3	0	—	5.0× / 0.2
Quakes · Java Sea	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	0.4× / 2.8
Quakes · South Atlantic Ocean	1	3	0	—	0.8× / 1.2
Quakes · Southern Ocean	1	3	0	—	1.3× / 0.8
Exercises · Arabian Sea	1	2.8	0	—	0.4× / 2.4
Debris · English Channel	1	2.7	0	—	2.5× / 0.4
Quakes · North Atlantic Ocean	1	2.2	1	2	2.5× / 0.4
Ordnance · Tyrrhenian Sea	1	2.2	0	—	2.5× / 0.4
Restricted · Ionian Sea	1	2.1	0	—	new / 0
Exercises · Andaman or Burma Sea	1	2	0	—	1.7× / 0.6
Quakes · Gulf of California	1	1.9	1	1	new / 0
Spills · Mediterranean Sea - Eastern Basin	1	1	1	1	new / 0
Exercises · Bay of Biscay	1	0.5	0	—	new / 0
Nav aids · Bass Strait	1	0.4	0	—	1.3× / 0.8
Exercises · North Sea	1	0.3	0	—	new / 0
Cable ops · South China Sea	1	0.1	1	279	0.4× / 2.6
Incidents · Arafura Sea	1	0	0	—	1.0× / 1
Nav aids · Bristol Channel	1	0	0	—	new / 0
Exercises · Aegean Sea	0	279	9	216	0.0× / 0.6
Nav aids · Caribbean Sealong running	0	186	6	413	0.0× / 1.2
Surveys · Baffin Baylong running	0	155	5	1,033	— / 0
Nav aids · North Pacific Oceanlong running	0	155	5	709	0.0× / 1
Surveys · Beaufort Sealong running	0	124	4	935	— / 0
Nav aids · Mozambique Channellong running	0	124	4	475	0.0× / 0.6
Wrecks · North Sealong running	0	124	4	595	0.0× / 0.2
Nav aids · Andaman or Burma Sea	0	93	3	271	0.0× / 0.6
Surveys · Arctic Oceanlong running	0	93	3	935	0.0× / 0.2
Wrecks · Caribbean Sealong running	0	93	3	558	— / 0
Structures · Gulf of Mexico	0	93	3	208	— / 0
Exercises · Ionian Sea	0	93	3	216	0.0× / 2.2
Wrecks · Irish Sea and St. George's Channellong running	0	93	3	693	— / 0
Nav aids · Mediterranean Sea - Western Basin	0	93	3	157	0.0× / 0.8
Structures · North Sea	0	93	3	56	0.0× / 0.2
Incidents · South China Sea	0	93	3	42	0.0× / 2.2
Wrecks · South Pacific Oceanlong running	0	93	3	792	0.0× / 0.6
Cable ops · Tasman Sea	0	93	3	183	0.0× / 0.4
Nav aids · Tasman Sealong running	0	93	3	708	0.0× / 1.4
Ordnance · North Sealong running	0	67.8	2	409	0.0× / 0.8
Nav aids · Mediterranean Sea - Eastern Basinlong running	0	66	2	710	0.0× / 0.8
Other · Arabian Sea	0	62	2	166	0.0× / 0.6
Surveys · Arabian Sealong running	0	62	2	499	— / 0
Wrecks · Coral Sea	0	62	2	187	0.0× / 0.2
Other · Eastern China Sea	0	62	2	126	— / 0
Surveys · Laptev Sea	0	62	2	69	— / 0
Wrecks · North Atlantic Ocean	0	62	2	200	0.0× / 0.2
Piracy · Persian Gulflong running	0	62	2	538	— / 0
Structures · Persian Gulflong running	0	62	2	651	— / 0
Other · Sea of Okhotsk	0	62	2	80	0.0× / 0.2
Surveys · Sea of Okhotsk	0	62	2	75	0.0× / 0.4
Wrecks · Tasman Sea	0	62	2	73	— / 0
Wrecks · Yellow Sealong running	0	62	2	775	— / 0
Surveys · Philippine Sea	0	58	1	93	0.0× / 0.2
Cable ops · Gulf of Suez	0	47	0	—	0.0× / 0.2
Other · Gulf of Suez	0	36.7	1	150	— / 0
Wrecks · Andaman or Burma Sea	0	31	1	297	— / 0
Ordnance · Arabian Sea	0	31	1	205	0.0× / 0.2
Spills · Arabian Sea	0	31	1	34	— / 0
Incidents · Arabian Sea	0	31	1	53	0.0× / 1.6
Debris · Arctic Oceanlong running	0	31	1	587	— / 0
Cable ops · Bay of Bengal	0	31	1	125	0.0× / 1
Restricted · Bay of Bengal	0	31	1	104	— / 0
Wrecks · Bay of Bengal	0	31	1	59	0.0× / 0.2
Surveys · Chukchi Sealong running	0	31	1	468	— / 0
Wrecks · Eastern China Sea	0	31	1	42	— / 0
Wrecks · English Channel	0	31	1	326	0.0× / 0.2
Surveys · Greenland Sealong running	0	31	1	1,251	— / 0
Other · Gulf of Aden	0	31	1	49	— / 0
Surveys · Gulf of Aqaba	0	31	1	40	— / 0
Cable ops · Gulf of Mexico	0	31	1	34	0.0× / 0.4
Other · Gulf of Mexico	0	31	1	252	0.0× / 0.4
Wrecks · Gulf of Mexico	0	31	1	307	— / 0
Other · Indian Ocean	0	31	1	130	0.0× / 0.8
Restricted · Indian Oceanlong running	0	31	1	463	0.0× / 0.2
Wrecks · Indian Oceanlong running	0	31	1	602	0.0× / 0.2
Nav aids · Ionian Sea	0	31	1	95	— / 0
Other · Ionian Sea	0	31	1	35	0.0× / 0.2
Nav aids · Malacca Strait	0	31	1	305	— / 0
Wrecks · Malacca Strait	0	31	1	125	— / 0
Other · Mediterranean Sea - Eastern Basin	0	31	1	35	0.0× / 0.4
Restricted · Mediterranean Sea - Eastern Basin	0	31	1	55	— / 0
Structures · Mediterranean Sea - Eastern Basin	0	31	1	39	— / 0
Restricted · Mediterranean Sea - Western Basin	0	31	1	112	— / 0
Other · Mozambique Channel	0	31	1	216	0.0× / 0.2
Wrecks · Mozambique Channel	0	31	1	165	— / 0
Surveys · North Atlantic Ocean	0	31	1	117	0.0× / 1.4
Debris · North Pacific Oceanlong running	0	31	1	411	— / 0
Other · North Pacific Ocean	0	31	1	41	0.0× / 0.6
Restricted · North Pacific Ocean	0	31	1	70	0.0× / 0.2
Volcanic · North Pacific Ocean	0	31	1	205	— / 0
Wrecks · North Pacific Ocean	0	31	1	207	0.0× / 0.2
Other · North Sea	0	31	1	87	0.0× / 1.4
Surveys · Persian Gulf	0	31	1	90	0.0× / 0.2
Wrecks · Philippine Sea	0	31	1	112	— / 0

Cite: seahazards.com Sea Ledger, 2006-07, 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.