Sea Ledger, May 2006

2006-05-01 to 2006-05-31 · archive

issued: 379
warning-days in force: 12,830
in force at month end: 427
sea × type cells: 229

baseline: same month, previous 5 years (2005-05, 2004-05, 2003-05, 2002-05, 2001-05)

By type

type	issued	warning-days	in force at end
Exercises	101	1,264	42
Incidents	48	1,539.5	55
Quakes	45	160.5	4
Nav aids	38	3,775.8	121
Surveys	33	1,171	47
Cable ops	25	992.2	31
Derelicts	20	181.6	4
Icebergs	15	80.7	1
Other	14	866	30
Wrecks	10	1,727.5	60
Spills	7	140	0
Restricted	7	248.5	10
Missiles	6	62	2
Containers	5	28.8	0
Ordnance	2	190.8	6
Structures	1	146.5	5
Mines	1	0.6	1
Debris	1	68	2
Volcanic	0	124	4
Piracy	0	62	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · South Pacific Oceansurge	19	78.6	1	31	2.4× / 8
Exercises · North Pacific Oceansurge	15	117.7	2	35	2.0× / 7.4
Incidents · South Pacific Oceansurge	13	256.6	10	50	3.1× / 4.2
Exercises · North Atlantic Ocean	11	74.8	2	23	1.2× / 9.4
Incidents · Coral Seasurge	10	119.1	7	64	2.2× / 4.6
Exercises · Laccadive Sea	10	63.2	3	34	1.4× / 7.2
Exercises · South Pacific Oceansurge	10	54	2	23	4.5× / 2.2
Exercises · Aegean Seasurge	9	368.1	12	155	6.4× / 1.4
Incidents · Philippine Seasurge	8	247.5	11	75	2.4× / 3.4
Quakes · Indian Oceansurge	8	24.6	1	32	2.1× / 3.8
Derelicts · Mediterranean Sea - Eastern Basinsurge	7	61.2	1	29	5.0× / 1.4
Exercises · Bay of Bengalsurge	7	42.4	3	28	2.1× / 3.4
Exercises · Mediterranean Sea - Eastern Basin	7	26.8	2	28	1.9× / 3.6
Missiles · North Pacific Ocean	6	62	2	59	0.9× / 6.4
Icebergs · Southern Oceansurge	6	23.6	1	15	2.7× / 2.2
Quakes · North Pacific Ocean	6	18	0	—	1.3× / 4.8
Cable ops · Bay of Bengalsurge	5	274.4	7	176	5.0× / 1
Nav aids · English Channellong running	5	180.1	7	390	1.9× / 2.6
Incidents · North Pacific Ocean	5	169.4	6	89	0.5× / 9.8
Cable ops · Mediterranean Sea - Eastern Basin	5	108.8	4	97	1.9× / 2.6
Nav aids · Irish Sea and St. George's Channelsurge	5	107.3	4	83	3.1× / 1.6
Exercises · South Atlantic Ocean	5	37.6	0	—	1.8× / 2.8
Cable ops · South Atlantic Ocean	5	34.2	1	32	0.2× / 27
Nav aids · Inner Seas off the West Coast of Scotlandsurge	4	129.7	4	288	3.3× / 1.2
Nav aids · Coral Seasurgelong running	4	121.3	4	696	4.0× / 1
Exercises · Yellow Seasurge	4	85.6	3	39	4.0× / 1
Spills · North Atlantic Oceansurge	4	63	0	—	2.5× / 1.6
Incidents · North Atlantic Ocean	4	61.5	4	49	1.3× / 3
Nav aids · Indian Oceansurge	4	61.3	2	50	2.5× / 1.6
Surveys · North Seasurge	4	53.8	2	30	2.9× / 1.4
Restricted · North Atlantic Oceansurge	4	36.6	2	61	10× / 0.4
Icebergs · North Atlantic Ocean	4	26.1	0	—	1.1× / 3.6
Cable ops · Celtic Seasurge	4	12.6	1	14	2.9× / 1.4
Exercises · North Seanew	4	2.2	0	—	new / 0
Nav aids · North Sealong running	3	333.6	12	561	0.6× / 5.4
Surveys · Bay of Bengalsurge	3	97.2	4	98	7.5× / 0.4
Incidents · Tasman Sea	3	90.1	3	38	1.7× / 1.8
Exercises · Tyrrhenian Sea	3	86	2	48	0.8× / 3.6
Exercises · Japan Seasurge	3	75.6	2	37	3.8× / 0.8
Surveys · Persian Gulfsurge	3	70.6	3	70	15× / 0.2
Surveys · Mediterranean Sea - Eastern Basinsurge	3	58.7	2	52	2.1× / 1.4
Surveys · North Atlantic Ocean	3	51.8	3	56	1.3× / 2.4
Derelicts · North Atlantic Ocean	3	20.1	0	—	1.3× / 2.4
Icebergs · South Atlantic Ocean	3	17.6	0	—	1.7× / 1.8
Exercises · Arabian Sea	3	12	0	—	0.7× / 4.2
Quakes · Coral Sea	3	11.3	0	—	1.5× / 2
Surveys · English Channelsurge	3	6.9	0	—	2.5× / 1.2
Nav aids · Tasman Sealong running	2	90.3	4	647	5.0× / 0.4
Wrecks · Persian Gulfnew	2	82.4	3	143	new / 0
Other · Indian Ocean	2	78.4	3	69	10× / 0.2
Nav aids · Tyrrhenian Sealong running	2	61	1	559	1.3× / 1.6
Other · North Sea	2	48.5	1	35	1.0× / 2
Spills · Gulf of Mexico	2	42	0	—	1.1× / 1.8
Surveys · Sea of Okhotsknew	2	29	2	14	new / 0
Surveys · Celtic Sea	2	27.9	1	40	0.3× / 6.6
Other · North Atlantic Ocean	2	27.8	1	36	0.7× / 3
Wrecks · Tasman Seanew	2	19.8	2	12	new / 0
Exercises · Black Sea	2	18.2	0	—	0.8× / 2.4
Surveys · Laptev Seanew	2	17	2	8	new / 0
Icebergs · Labrador Sea	2	13.4	0	—	5.0× / 0.4
Wrecks · Bay of Bengal	2	12.1	1	23	10× / 0.2
Restricted · North Pacific Oceannew	2	11	1	11	new / 0
Derelicts · South China Sea	2	10.3	0	—	2.5× / 0.8
Other · South Atlantic Ocean	2	9.7	1	9	5.0× / 0.4
Ordnance · South China Seanew	2	8.4	1	5	new / 0
Quakes · Bering Seanew	2	7.7	0	—	new / 0
Quakes · Solomon Sea	2	5.5	1	3	2.0× / 1
Derelicts · Ionian Seanew	2	1.9	0	—	new / 0
Nav aids · Arabian Sealong running	1	311.1	10	651	1.0× / 1
Nav aids · Caribbean Sea	1	225.8	7	352	2.5× / 0.4
Nav aids · South Pacific Ocean	1	212.6	7	146	0.5× / 2.2
Wrecks · Arabian Sealong running	1	187.2	7	638	5.0× / 0.2
Nav aids · South Atlantic Oceanlong running	1	171.7	4	536	0.2× / 4.8
Nav aids · Mozambique Channellong running	1	170.4	6	414	0.5× / 2
Wrecks · Mediterranean Sea - Eastern Basinlong running	1	144.4	5	702	5.0× / 0.2
Nav aids · Gulf of Mexicolong running	1	109.3	4	415	2.5× / 0.4
Surveys · Beaufort Sealong running	1	101.5	4	874	new / 0
Wrecks · Irish Sea and St. George's Channellong running	1	95	3	632	new / 0
Exercises · Ionian Sea	1	93.6	4	155	1.0× / 1
Cable ops · Tasman Sea	1	88.5	3	122	2.5× / 0.4
Incidents · Mediterranean Sea - Eastern Basinlong running	1	87.1	3	407	0.3× / 4
Structures · Gulf of Mexico	1	84.5	3	147	new / 0
Wrecks · Caribbean Sealong running	1	70.6	3	497	new / 0
Other · Arabian Sea	1	59.4	2	166	5.0× / 0.2
Cable ops · North Atlantic Ocean	1	56.2	2	67	0.3× / 3
Surveys · Philippine Sea	1	52.6	2	32	0.8× / 1.2
Cable ops · Arabian Sea	1	50.3	2	33	0.3× / 3.2
Other · Tyrrhenian Sea	1	36.3	2	113	1.7× / 0.6
Exercises · Mediterranean Sea - Western Basin	1	36.1	1	68	0.4× / 2.8
Cable ops · South China Sea	1	35.6	2	218	0.7× / 1.4
Surveys · Sea of Marmara	1	32.2	2	74	new / 0
Nav aids · Celtic Sea	1	31.1	1	174	0.4× / 2.8
Derelicts · Arabian Sea	1	28.6	1	28	2.5× / 0.4
Cable ops · Laccadive Sea	1	28.6	1	28	0.6× / 1.6
Surveys · South Atlantic Ocean	1	24.9	1	73	0.1× / 6.8
Other · Sea of Okhotsk	1	19.5	1	19	new / 0
Cable ops · North Sea	1	18.5	0	—	0.7× / 1.4
Nav aids · Great Australian Bight	1	15.5	1	15	1.3× / 0.8
Incidents · Southern Ocean	1	15	1	14	2.5× / 0.4
Incidents · Bay of Bengal	1	14.7	0	—	2.5× / 0.4
Exercises · Caribbean Sea	1	14.5	1	14	new / 0
Spills · North Pacific Ocean	1	14	0	—	1.3× / 0.8
Restricted · Tasman Sea	1	13.4	1	13	new / 0
Exercises · South China Sea	1	7.4	1	7	5.0× / 0.2
Exercises · Malacca Strait	1	7	0	—	5.0× / 0.2
Containers · English Channel	1	6.7	0	—	new / 0
Derelicts · South Pacific Ocean	1	6.7	0	—	5.0× / 0.2
Containers · South Atlantic Ocean	1	6.6	0	—	5.0× / 0.2
Derelicts · South Atlantic Ocean	1	6.6	1	6	0.3× / 3
Containers · North Atlantic Ocean	1	6.5	0	—	2.5× / 0.4
Surveys · Eastern China Sea	1	6.4	1	6	new / 0
Derelicts · Indian Ocean	1	6.2	0	—	new / 0
Containers · Bay of Biscay	1	6.1	0	—	new / 0
Debris · North Atlantic Ocean	1	6	0	—	5.0× / 0.2
Derelicts · North Pacific Ocean	1	5.1	0	—	0.8× / 1.2
Surveys · Bay of Biscay	1	4.3	0	—	new / 0
Exercises · Norwegian Sea	1	3.2	1	3	new / 0
Quakes · Banda Sea	1	3	0	—	2.5× / 0.4
Quakes · Java Sea	1	3	0	—	new / 0
Quakes · Molukka Sea	1	3	0	—	0.7× / 1.4
Quakes · South China Sea	1	3	0	—	2.5× / 0.4
Nav aids · Bristol Channel	1	2.9	0	—	0.5× / 2.2
Containers · Mediterranean Sea - Western Basin	1	2.9	0	—	new / 0
Other · Malacca Strait	1	2.8	0	—	new / 0
Quakes · South Atlantic Ocean	1	2.8	1	2	1.0× / 1
Exercises · Irish Sea and St. George's Channel	1	2.6	0	—	new / 0
Exercises · Red Sea	1	2.6	1	2	1.0× / 1
Surveys · Ionian Sea	1	2.3	1	2	1.0× / 1
Surveys · Irish Sea and St. George's Channel	1	1.2	1	1	5.0× / 0.2
Derelicts · Laccadive Sea	1	1.2	0	—	new / 0
Other · Laccadive Sea	1	1.2	1	1	new / 0
Other · Inner Seas off the West Coast of Scotland	1	0.7	0	—	new / 0
Mines · Aegean Sea	1	0.6	1	0	new / 0
Incidents · Celtic Sea	1	0.3	0	—	1.3× / 0.8
Incidents · Timor Sea	1	0.1	0	—	1.7× / 0.6
Nav aids · Bay of Bengallong running	0	426.6	13	462	0.0× / 0.8
Incidents · South Atlantic Ocean	0	191.5	6	86	0.0× / 4
Wrecks · North Sealong running	0	186	6	586	0.0× / 0.4
Nav aids · North Pacific Oceanlong running	0	184.9	5	648	0.0× / 0.2
Surveys · Baffin Baylong running	0	155	5	972	— / 0
Nav aids · Mediterranean Sea - Western Basin	0	155	5	96	0.0× / 1.2
Nav aids · Laccadive Sea	0	147.7	4	155	0.0× / 0.6
Other · North Pacific Ocean	0	147.7	4	140	0.0× / 0.8
Ordnance · North Sea	0	124	4	348	0.0× / 0.2
Wrecks · South China Sealong running	0	124	4	641	— / 0
Incidents · Indian Oceanlong running	0	98.1	2	410	0.0× / 3.2
Nav aids · Andaman or Burma Sea	0	93	3	210	0.0× / 0.2
Surveys · Arctic Oceanlong running	0	93	3	874	— / 0
Wrecks · English Channel	0	93	3	358	— / 0
Nav aids · Gulf of Suez	0	93	3	90	0.0× / 0.2
Nav aids · Mediterranean Sea - Eastern Basinlong running	0	93	3	649	— / 0
Other · Persian Gulf	0	93	3	231	0.0× / 1
Wrecks · South Pacific Oceanlong running	0	93	3	731	0.0× / 0.2
Surveys · Arabian Sealong running	0	78.5	2	438	0.0× / 0.4
Cable ops · Persian Gulf	0	63.5	2	93	0.0× / 1
Wrecks · Coral Sea	0	62	2	126	0.0× / 0.4
Other · Eastern China Sea	0	62	2	65	0.0× / 0.2
Other · Gulf of Suez	0	62	2	89	0.0× / 0.2
Nav aids · Malacca Strait	0	62	2	244	— / 0
Restricted · Mediterranean Sea - Western Basin	0	62	2	64	0.0× / 0.2
Wrecks · Mozambique Channel	0	62	2	106	— / 0
Wrecks · North Atlantic Ocean	0	62	2	139	— / 0
Restricted · North Sea	0	62	2	169	— / 0
Piracy · Persian Gulflong running	0	62	2	477	— / 0
Structures · Persian Gulflong running	0	62	2	590	— / 0
Volcanic · Philippine Sea	0	62	2	97	0.0× / 0.4
Other · South Pacific Ocean	0	62	2	100	0.0× / 0.6
Wrecks · Yellow Sealong running	0	62	2	714	— / 0
Incidents · Gulf of Guinea	0	54.7	1	51	0.0× / 0.6
Incidents · Laccadive Sea	0	32.9	0	—	0.0× / 0.2
Incidents · Mozambique Channel	0	32.9	0	—	0.0× / 0.2
Derelicts · Adriatic Sea	0	31	1	41	— / 0
Cable ops · Andaman or Burma Sea	0	31	1	37	— / 0
Incidents · Andaman or Burma Sea	0	31	1	38	0.0× / 0.2
Wrecks · Andaman or Burma Sea	0	31	1	236	— / 0
Ordnance · Arabian Sea	0	31	1	144	0.0× / 0.2
Nav aids · Arafura Sea	0	31	1	34	— / 0
Wrecks · Arafura Sea	0	31	1	81	— / 0
Debris · Arctic Oceanlong running	0	31	1	526	— / 0
Other · Bay of Bengallong running	0	31	1	428	0.0× / 0.2
Restricted · Bay of Bengal	0	31	1	43	— / 0
Cable ops · Black Sea	0	31	1	33	0.0× / 0.2
Other · Caribbean Sea	0	31	1	63	— / 0
Surveys · Chukchi Sealong running	0	31	1	407	— / 0
Cable ops · Eastern China Sea	0	31	1	48	0.0× / 1.4
Surveys · Greenland Sealong running	0	31	1	1,190	— / 0
Other · Gulf of Mexico	0	31	1	191	0.0× / 0.2
Wrecks · Gulf of Mexico	0	31	1	246	— / 0
Restricted · Indian Oceanlong running	0	31	1	402	— / 0
Wrecks · Indian Oceanlong running	0	31	1	541	0.0× / 0.2
Nav aids · Ionian Sea	0	31	1	34	— / 0
Wrecks · Kattegat	0	31	1	193	— / 0
Surveys · Laccadive Sea	0	31	1	142	— / 0
Wrecks · Malacca Strait	0	31	1	64	— / 0
Other · Mozambique Channel	0	31	1	155	0.0× / 0.2
Nav aids · North Atlantic Ocean	0	31	1	134	0.0× / 4
Debris · North Pacific Ocean	0	31	1	350	0.0× / 0.4
Surveys · North Pacific Ocean	0	31	1	303	0.0× / 0.4
Volcanic · North Pacific Ocean	0	31	1	144	— / 0
Wrecks · North Pacific Ocean	0	31	1	146	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2006-05, 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.