Sea Ledger, July 2007

2007-07-01 to 2007-07-31 · archive

issued: 351
warning-days in force: 16,100
in force at month end: 550
sea × type cells: 249

baseline: same month, previous 5 years (2006-07, 2005-07, 2004-07, 2003-07, 2002-07)

By type

type	issued	warning-days	in force at end
Cable ops	75	1,645.8	54
Exercises	62	800.8	27
Incidents	54	1,500.7	59
Quakes	39	182.5	8
Nav aids	27	5,606	184
Surveys	22	2,204.8	77
Derelicts	13	260.9	8
Spills	13	183	5
Other	10	1,052.6	35
Icebergs	8	46	2
Restricted	7	276.4	12
Missiles	7	66.8	3
Wrecks	6	1,517.5	51
Ordnance	3	198.4	7
Structures	2	247.2	9
Containers	2	10.5	0
Debris	1	41.8	1
Volcanic	0	186	6
Towing	0	34.2	1
Piracy	0	31	1
Mines	0	7.2	0

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Oceansurge	33	107.8	4	34	2.7× / 12.4
Quakes · South Pacific Oceansurge	17	52.8	1	33	2.3× / 7.4
Incidents · South Pacific Oceansurge	15	144	9	83	2.2× / 6.8
Exercises · North Pacific Ocean	15	90.1	3	34	1.6× / 9.4
Cable ops · North Atlantic Oceansurge	14	179.2	6	81	5.4× / 2.6
Incidents · North Pacific Ocean	9	349.3	11	85	1.3× / 6.8
Incidents · South Atlantic Oceansurge	9	125.6	6	85	2.4× / 3.8
Icebergs · South Atlantic Oceansurge	8	40	2	27	4.4× / 1.8
Incidents · Philippine Sea	7	199.1	7	80	1.2× / 6
Nav aids · Inner Seas off the West Coast of Scotlandsurgelong running	7	162	6	418	3.2× / 2.2
Cable ops · Mediterranean Sea - Eastern Basinsurge	7	151.9	7	196	5.8× / 1.2
Exercises · Laccadive Sea	7	90	4	38	0.7× / 9.4
Missiles · North Pacific Ocean	6	62	2	65	1.0× / 5.8
Exercises · North Atlantic Ocean	6	16.9	1	29	0.9× / 6.4
Nav aids · North Sea	5	284.6	10	285	1.3× / 4
Spills · Gulf of Mexico	5	66	3	37	1.6× / 3.2
Surveys · South Atlantic Oceansurge	5	44.9	3	43	3.6× / 1.4
Exercises · Bay of Bengal	5	37.3	2	35	1.3× / 3.8
Exercises · South Pacific Ocean	5	25.4	1	23	1.3× / 3.8
Quakes · North Pacific Ocean	5	14.8	1	25	0.8× / 6
Incidents · North Atlantic Ocean	4	120.6	6	271	1.0× / 4
Exercises · Black Sea	4	55.9	1	103	1.7× / 2.4
Cable ops · Gulf of Mexiconew	4	40.1	1	58	new / 0
Incidents · Indian Ocean	3	204.3	8	71	0.9× / 3.2
Incidents · Bay of Bengalsurge	3	115.8	5	81	15× / 0.2
Other · South Atlantic Oceansurge	3	106.6	4	304	7.5× / 0.4
Cable ops · Sea of Okhotsksurge	3	94.1	4	48	3.0× / 1
Exercises · Japan Sea	3	59	2	34	0.8× / 4
Cable ops · Sea of Marmaranew	3	57.9	2	26	new / 0
Surveys · Sea of Okhotsksurge	3	53.5	4	65	15× / 0.2
Exercises · Baltic Seanew	3	21.7	1	32	new / 0
Quakes · Japan Seasurge	3	9	0	—	15× / 0.2
Quakes · South Atlantic Oceansurge	3	3.9	2	3	2.5× / 1.2
Nav aids · Indian Oceanlong running	2	349.3	12	442	2.5× / 0.8
Nav aids · Bass Strait	2	135.7	5	316	2.5× / 0.8
Structures · Mediterranean Sea - Eastern Basinnewlong running	2	123.2	5	404	new / 0
Nav aids · Gulf of Mexicolong running	2	96.4	3	841	10× / 0.2
Quakes · Bay of Bengal	2	77.5	3	232	2.0× / 1
Wrecks · Laccadive Sea	2	60.6	2	167	10× / 0.2
Surveys · North Sealong running	2	48.2	2	449	1.4× / 1.4
Exercises · Yellow Sea	2	38.3	2	34	1.1× / 1.8
Spills · North Atlantic Ocean	2	38	0	—	1.1× / 1.8
Restricted · North Atlantic Ocean	2	38	2	56	3.3× / 0.6
Exercises · South Atlantic Ocean	2	37	1	31	0.9× / 2.2
Surveys · Mediterranean Sea - Eastern Basin	2	33	2	60	0.6× / 3.4
Spills · North Pacific Ocean	2	32	0	—	1.3× / 1.6
Nav aids · Gulf of Alaskanew	2	31.7	1	54	new / 0
Other · English Channel	2	29.1	1	28	5.0× / 0.4
Surveys · Black Sea	2	27.2	2	19	5.0× / 0.4
Cable ops · Black Sea	2	26.8	1	26	5.0× / 0.4
Restricted · Alboran Sea	2	13	2	11	10× / 0.2
Derelicts · North Pacific Ocean	2	12.7	0	—	1.4× / 1.4
Derelicts · Indian Ocean	2	12.1	1	31	2.5× / 0.8
Exercises · Arabian Sea	2	11.2	1	32	0.8× / 2.6
Derelicts · Philippine Sea	2	8.5	1	34	3.3× / 0.6
Derelicts · Tasman Seanew	2	7	0	—	new / 0
Derelicts · Celtic Sea	2	6.5	0	—	10× / 0.2
Exercises · Mediterranean Sea - Eastern Basin	2	3.5	0	—	0.8× / 2.4
Ordnance · English Channelnew	2	0.5	0	—	new / 0
Nav aids · Coral Sealong running	1	430.8	14	1,122	0.7× / 1.4
Surveys · Arctic Oceanlong running	1	390.2	13	1,300	5.0× / 0.2
Nav aids · North Pacific Oceanlong running	1	210.3	7	741	1.3× / 0.8
Exercises · Aegean Sea	1	188.2	6	209	2.5× / 0.4
Cable ops · Bay of Bengal	1	137.9	5	246	1.7× / 0.6
Nav aids · North Atlantic Oceanlong running	1	125.4	4	560	0.3× / 3.4
Cable ops · Tasman Sealong running	1	122.9	4	548	5.0× / 0.2
Nav aids · South Atlantic Ocean	1	118.8	4	269	0.2× / 5.6
Cable ops · Indian Ocean	1	113.2	3	187	5.0× / 0.2
Cable ops · South China Sea	1	99.4	3	142	0.7× / 1.4
Nav aids · English Channellong running	1	96.3	4	653	0.8× / 1.2
Other · South Pacific Oceanlong running	1	93.3	3	400	2.5× / 0.4
Ordnance · North Sea	1	73.9	3	81	1.3× / 0.8
Other · Mediterranean Sea - Eastern Basin	1	72.5	2	103	2.5× / 0.4
Wrecks · South China Sealong running	1	68.4	3	1,013	2.5× / 0.4
Surveys · North Atlantic Oceanlong running	1	66.7	1	482	1.3× / 0.8
Nav aids · Mediterranean Sea - Eastern Basinlong running	1	63.3	2	1,075	1.3× / 0.8
Surveys · Indian Ocean	1	62	2	300	5.0× / 0.2
Surveys · Bay of Bengal	1	59.3	2	124	1.7× / 0.6
Wrecks · Indian Oceanlong running	1	58.9	2	967	5.0× / 0.2
Wrecks · Arabian Sealong running	1	57.1	2	465	1.7× / 0.6
Other · Caribbean Sea	1	51.5	2	246	new / 0
Cable ops · Gulf of Guinea	1	45	2	134	new / 0
Surveys · Gulf of Suezlong running	1	40	2	378	5.0× / 0.2
Other · Gulf of Guinea	1	35.3	2	119	new / 0
Other · Kattegat	1	29.3	1	29	new / 0
Cable ops · Norwegian Sea	1	27.5	1	27	1.7× / 0.6
Cable ops · Arabian Sea	1	25.7	1	25	2.5× / 0.4
Incidents · Tyrrhenian Sea	1	24.1	1	24	5.0× / 0.2
Cable ops · Sulu Sea	1	23.3	1	95	5.0× / 0.2
Surveys · Mozambique Channel	1	19.2	1	19	new / 0
Surveys · Aegean Sea	1	18.6	0	—	new / 0
Incidents · Tasman Sea	1	14.1	0	—	0.8× / 1.2
Spills · Bering Sea	1	14	0	—	new / 0
Spills · Philippine Sea	1	14	0	—	new / 0
Exercises · Sea of Marmara	1	12.3	0	—	new / 0
Spills · Gulf of Alaska	1	10	1	10	new / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	9	1	43	5.0× / 0.2
Incidents · Bay of Biscay	1	8.5	1	8	new / 0
Debris · North Pacific Ocean	1	7.8	0	—	new / 0
Exercises · Andaman or Burma Sea	1	7.5	0	—	1.3× / 0.8
Exercises · Red Sea	1	7.3	0	—	1.3× / 0.8
Derelicts · Coral Sea	1	6.8	0	—	5.0× / 0.2
Exercises · Malacca Strait	1	6.8	0	—	1.0× / 1
Derelicts · English Channel	1	6.7	0	—	new / 0
Derelicts · Timor Sea	1	6.6	0	—	5.0× / 0.2
Containers · Caribbean Sea	1	6.4	0	—	new / 0
Missiles · South Pacific Ocean	1	4.8	1	4	5.0× / 0.2
Restricted · Black Sea	1	4.2	0	—	2.5× / 0.4
Containers · North Atlantic Ocean	1	4.1	0	—	5.0× / 0.2
Cable ops · Bristol Channel	1	3.8	0	—	new / 0
Quakes · Banda Sea	1	3	0	—	1.7× / 0.6
Quakes · Bering Sea	1	3	0	—	5.0× / 0.2
Quakes · Bismarck Sea	1	3	0	—	0.6× / 1.8
Quakes · Coral Sea	1	3	0	—	0.6× / 1.6
Quakes · Molukka Sea	1	3	0	—	0.8× / 1.2
Quakes · North Atlantic Ocean	1	3	0	—	2.5× / 0.4
Quakes · Sea of Okhotsk	1	3	0	—	2.5× / 0.4
Quakes · Southern Ocean	1	3	0	—	1.0× / 1
Restricted · Sea of Okhotsk	1	2.7	0	—	new / 0
Wrecks · Black Sea	1	1.5	1	1	new / 0
Restricted · Strait of Gibraltar	1	1.5	1	1	new / 0
Surveys · The Coastal Waters of Southeast Alaska and British Columbia	1	0.5	1	0	new / 0
Exercises · Caribbean Sea	1	0.4	0	—	2.5× / 0.4
Quakes · Eastern China Sea	1	0.4	1	0	5.0× / 0.2
Nav aids · Eastern China Sea	1	0.4	0	—	new / 0
Incidents · Celtic Sea	1	0.1	0	—	2.5× / 0.4
Surveys · Beaufort Sealong running	0	713	23	1,300	— / 0
Nav aids · South Pacific Oceanlong running	0	651	21	572	0.0× / 2.8
Nav aids · Arabian Sealong running	0	465	15	568	0.0× / 0.6
Nav aids · Caribbean Sealong running	0	403	13	778	0.0× / 0.4
Nav aids · Bay of Bengallong running	0	248	8	778	0.0× / 2
Nav aids · Mozambique Channellong running	0	217	7	840	0.0× / 0.4
Wrecks · North Sealong running	0	217	7	672	0.0× / 0.2
Nav aids · Laccadive Sealong running	0	186	6	571	0.0× / 0.4
Wrecks · Mediterranean Sea - Eastern Basinlong running	0	186	6	1,128	0.0× / 0.8
Wrecks · Persian Gulflong running	0	186	6	367	0.0× / 0.4
Surveys · Baffin Baylong running	0	155	5	1,398	— / 0
Nav aids · Tyrrhenian Sealong running	0	155	5	985	0.0× / 1
Nav aids · Arafura Sea	0	124	4	358	0.0× / 0.2
Nav aids · Bering Sealong running	0	124	4	377	0.0× / 0.2
Nav aids · Irish Sea and St. George's Channellong running	0	124	4	509	0.0× / 2.8
Nav aids · Mediterranean Sea - Western Basinlong running	0	124	4	466	0.0× / 0.8
Cable ops · Celtic Sea	0	96	2	175	0.0× / 6.4
Derelicts · Arabian Sea	0	93	3	50	0.0× / 0.4
Surveys · Laptev Sealong running	0	93	3	434	— / 0
Other · Persian Gulflong running	0	93	3	540	0.0× / 1
Nav aids · Tasman Sealong running	0	93	3	535	0.0× / 1
Exercises · Ionian Sea	0	92	2	200	0.0× / 1.4
Incidents · Gulf of Guinea	0	75.8	2	284	0.0× / 0.6
Cable ops · North Sea	0	75.8	2	111	0.0× / 2.6
Nav aids · Gulf of Suez	0	66.9	2	229	0.0× / 0.6
Other · Indian Oceanlong running	0	65.3	2	495	0.0× / 0.8
Other · Arabian Sealong running	0	62	2	531	0.0× / 0.6
Other · Bay of Bengal	0	62	2	274	— / 0
Wrecks · Bay of Bengallong running	0	62	2	424	— / 0
Wrecks · Coral Sealong running	0	62	2	552	0.0× / 0.2
Nav aids · Great Australian Bight	0	62	2	330	0.0× / 0.2
Cable ops · Persian Gulf	0	62	2	102	0.0× / 1
Nav aids · Persian Gulf	0	62	2	346	0.0× / 0.6
Volcanic · Philippine Sea	0	62	2	300	0.0× / 1.2
Wrecks · Philippine Sealong running	0	62	2	477	— / 0
Nav aids · Sea of Okhotsklong running	0	62	2	406	— / 0
Other · South China Sealong running	0	62	2	412	0.0× / 0.2
Incidents · South China Sea	0	62	2	48	0.0× / 1.6
Volcanic · South Pacific Ocean	0	62	2	178	— / 0
Wrecks · South Pacific Ocean	0	62	2	319	0.0× / 0.4
Wrecks · Tasman Sealong running	0	62	2	438	— / 0
Surveys · The Northwestern Passages	0	62	2	283	— / 0
Ordnance · Tyrrhenian Sea	0	62	2	257	0.0× / 0.4
Wrecks · Tyrrhenian Sealong running	0	62	2	497	— / 0
Nav aids · Andaman or Burma Sealong running	0	48.1	1	636	0.0× / 0.6
Cable ops · South Pacific Ocean	0	38.2	1	109	— / 0
Nav aids · Celtic Sea	0	38	1	54	0.0× / 2.2
Other · North Atlantic Ocean	0	35	1	90	0.0× / 4.4
Towing · South Atlantic Ocean	0	34.2	1	255	— / 0
Incidents · Arabian Sea	0	31	1	42	0.0× / 1.4
Surveys · Arabian Sealong running	0	31	1	567	— / 0
Debris · Arctic Oceanlong running	0	31	1	952	— / 0
Nav aids · Baltic Sea	0	31	1	43	— / 0
Volcanic · Banda Sea	0	31	1	120	— / 0
Derelicts · Bay of Bengal	0	31	1	45	0.0× / 0.2
Restricted · Bay of Bengallong running	0	31	1	469	— / 0
Ordnance · Black Sea	0	31	1	64	— / 0
Cable ops · Caribbean Sea	0	31	1	117	0.0× / 0.2
Restricted · Caribbean Sea	0	31	1	168	— / 0
Wrecks · Caribbean Sea	0	31	1	274	— / 0
Surveys · Chukchi Sealong running	0	31	1	833	— / 0
Other · Coral Sea	0	31	1	142	0.0× / 0.6
Other · Eastern China Sealong running	0	31	1	491	— / 0
Wrecks · English Channel	0	31	1	54	0.0× / 0.2
Surveys · Greenland Sealong running	0	31	1	1,616	— / 0
Wrecks · Gulf of Guinea	0	31	1	291	— / 0
Other · Gulf of Mexicolong running	0	31	1	617	0.0× / 0.2
Structures · Gulf of Mexico	0	31	1	105	— / 0
Other · Gulf of Suezlong running	0	31	1	515	— / 0
Structures · Gulf of Suez	0	31	1	104	— / 0
Other · Gulf of Thailand	0	31	1	229	— / 0
Restricted · Indian Oceanlong running	0	31	1	828	0.0× / 0.2
Nav aids · Ionian Sealong running	0	31	1	460	— / 0
Wrecks · Irish Sea and St. George's Channellong running	0	31	1	1,055	— / 0

Cite: seahazards.com Sea Ledger, 2007-07, 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.