Sea Ledger, February 2001

2001-02-01 to 2001-02-28 · archive

issued: 417
warning-days in force: 5,519
in force at month end: 191
sea × type cells: 176

baseline: same month, previous 5 years (2000-02, 1999-02, 1998-02, 1997-02)

By type

type	issued	warning-days	in force at end
Cable ops	97	641.8	21
Nav aids	60	2,117.5	75
Surveys	55	218	7
Incidents	53	609.9	21
Exercises	43	281.6	5
Quakes	41	105.5	9
Derelicts	19	98.4	4
Other	14	358.8	10
Ordnance	8	99.4	4
Wrecks	8	710.4	27
Missiles	5	56	2
Containers	4	24.7	0
Spills	4	81	2
Icebergs	3	18.5	1
War risk	2	58.9	2
Debris	1	10.3	0
Volcanic	0	28	1

By sea and type · 176 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	54	170.5	5	34	1.8× / 29.5
Surveys · English Channelsurge	18	46.3	0	—	36× / 0.5
Incidents · South Pacific Oceansurge	11	125.2	5	63	7.3× / 1.5
Surveys · Celtic Seasurge	11	26.4	1	28	4.4× / 2.5
Exercises · North Atlantic Oceansurge	10	44.3	2	26	3.1× / 3.25
Quakes · South Pacific Ocean	10	23.4	3	30	1.7× / 6
Nav aids · Coral Seasurgelong running	9	215.6	8	504	5.1× / 1.75
Surveys · Inner Seas off the West Coast of Scotlandnew	9	19	0	—	new / 0
Exercises · North Pacific Ocean	8	33.8	0	—	1.6× / 5
Quakes · North Pacific Oceansurge	8	21.2	1	27	2.0× / 4
Nav aids · North Sea	7	199.5	6	345	1.1× / 6.25
Nav aids · South Atlantic Oceansurge	7	151.7	7	210	2.8× / 2.5
Exercises · Aegean Seasurge	7	121.1	3	57	2.8× / 2.5
Incidents · North Pacific Ocean	7	45.4	0	—	1.9× / 3.75
Surveys · North Seasurge	7	12.2	2	17	4.7× / 1.5
Surveys · Irish Sea and St. George's Channelsurge	7	9.2	1	19	9.3× / 0.75
Cable ops · North Atlantic Ocean	6	73.6	2	30	1.0× / 6.25
Nav aids · English Channel	6	52.7	2	135	1.9× / 3.25
Quakes · Indian Oceansurge	6	17.7	1	15	4.0× / 1.5
Cable ops · Irish Sea and St. George's Channelsurge	6	14.7	0	—	2.4× / 2.5
Cable ops · English Channelsurge	6	13.9	0	—	3.0× / 2
Nav aids · South Pacific Oceansurgelong running	5	319.4	12	571	5.0× / 1
Cable ops · South Pacific Oceansurge	5	62.6	1	28	4.0× / 1.25
Missiles · North Pacific Oceansurge	5	56	2	34	2.0× / 2.5
Incidents · South Atlantic Oceansurge	5	25.6	0	—	3.3× / 1.5
Ordnance · North Atlantic Oceansurge	5	25.3	2	51	20× / 0.25
Exercises · Mediterranean Sea - Western Basinsurge	5	21.6	0	—	4.0× / 1.25
Incidents · Indian Oceansurge	4	64	3	67	16× / 0.25
Incidents · North Atlantic Ocean	4	64	2	68	1.8× / 2.25
Incidents · South China Seasurge	4	41.1	2	50	3.2× / 1.25
Nav aids · Celtic Sea	4	29.9	1	48	1.8× / 2.25
Quakes · Philippine Sea	4	9.6	1	20	1.8× / 2.25
Exercises · Adriatic Sea	4	5.5	0	—	0.7× / 5.5
Wrecks · Coral Seanew	3	58.9	3	275	new / 0
Incidents · Coral Seasurge	3	35.6	2	43	4.0× / 0.75
Nav aids · Inner Seas off the West Coast of Scotland	3	31.2	1	309	1.1× / 2.75
Cable ops · North Pacific Oceansurge	3	28	1	37	2.4× / 1.25
Cable ops · North Sea	3	22.8	1	31	1.1× / 2.75
Icebergs · South Atlantic Ocean	3	18.5	1	30	1.5× / 2
Nav aids · Great Australian Bightsurge	3	14.6	0	—	12× / 0.25
Derelicts · Mediterranean Sea - Eastern Basinnew	3	13.4	1	18	new / 0
Cable ops · Celtic Sea	3	12.8	0	—	1.7× / 1.75
Other · Tyrrhenian Seasurge	3	10.3	0	—	6.0× / 0.5
Quakes · Molukka Seasurge	3	9	0	—	6.0× / 0.5
Quakes · Sea of Okhotsksurge	3	8.8	1	21	6.0× / 0.5
Quakes · Solomon Sea	3	6.6	1	19	1.1× / 2.75
Cable ops · Bristol Channelnew	3	5.3	0	—	new / 0
Wrecks · Tyrrhenian Seanewlong running	2	77.9	3	860	new / 0
Nav aids · Tasman Sea	2	68.2	2	301	8.0× / 0.25
Other · Japan Sea	2	61.3	2	30	8.0× / 0.25
War risk · Persian Gulflong running	2	58.9	2	391	2.0× / 1
Nav aids · Irish Sea and St. George's Channel	2	56.7	4	301	0.9× / 2.25
Spills · North Pacific Ocean	2	47	1	33	2.0× / 1
Other · Yellow Seanew	2	39.9	1	33	new / 0
Nav aids · Tyrrhenian Sea	2	25.7	1	33	2.7× / 0.75
Incidents · Tasman Sea	2	25	0	—	4.0× / 0.5
Incidents · Arabian Sea	2	22	1	56	8.0× / 0.25
Incidents · Mozambique Channelnew	2	15.6	1	15	new / 0
Derelicts · North Atlantic Ocean	2	12.7	0	—	1.0× / 2
Containers · North Atlantic Ocean	2	12.4	0	—	2.0× / 1
Derelicts · South Atlantic Oceannew	2	12.4	1	22	new / 0
Nav aids · South China Seanew	2	11.7	0	—	new / 0
Derelicts · North Pacific Oceannew	2	11.2	0	—	new / 0
Exercises · Mediterranean Sea - Eastern Basin	2	9.9	0	—	4.0× / 0.5
Wrecks · Kattegatnew	2	9.5	1	9	new / 0
Cable ops · Inner Seas off the West Coast of Scotlandnew	2	8.5	0	—	new / 0
Incidents · Tyrrhenian Seanew	2	8.2	1	7	new / 0
Other · North Pacific Ocean	2	7.9	0	—	4.0× / 0.5
Derelicts · South Pacific Ocean	2	6.1	1	6	8.0× / 0.25
Exercises · Ligurian Sea	2	5.6	0	—	2.0× / 1
Surveys · North Atlantic Ocean	2	5.5	0	—	2.0× / 1
Incidents · Philippine Sea	2	1.6	0	—	2.7× / 0.75
Nav aids · North Atlantic Ocean	1	140.5	5	253	1.0× / 1
Cable ops · South China Sea	1	67.5	3	69	1.0× / 1
Wrecks · English Channellong running	1	64.1	3	609	new / 0
Nav aids · Persian Gulf	1	60.1	2	56	2.0× / 0.5
Cable ops · Arabian Sea	1	51.5	2	36	2.0× / 0.5
Nav aids · Laccadive Sea	1	46.5	2	37	new / 0
Other · North Sea	1	34.9	1	331	4.0× / 0.25
Nav aids · Japan Sea	1	33.6	1	55	new / 0
Other · North Atlantic Ocean	1	29.6	1	72	new / 0
Exercises · Bay of Bengal	1	19.1	0	—	4.0× / 0.25
Incidents · Arafura Sea	1	18.1	1	18	4.0× / 0.25
Spills · Gulf of Mexico	1	14	0	—	0.3× / 3.5
Cable ops · Mediterranean Sea - Eastern Basin	1	13.9	1	13	1.0× / 1
Exercises · Black Sea	1	12.6	0	—	new / 0
Ordnance · Gulf of Mexico	1	11.4	1	33	new / 0
Debris · North Atlantic Ocean	1	10.3	0	—	1.3× / 0.75
Spills · North Atlantic Ocean	1	9	1	9	0.4× / 2.75
Nav aids · Bass Strait	1	8.5	0	—	1.0× / 1
Cable ops · Eastern China Sea	1	7.5	1	7	4.0× / 0.25
Derelicts · Tasman Sea	1	6.9	0	—	4.0× / 0.25
Derelicts · Adriatic Sea	1	6.6	0	—	new / 0
Cable ops · Indian Ocean	1	6.5	1	6	4.0× / 0.25
Derelicts · Ionian Sea	1	6.3	0	—	new / 0
Containers · Celtic Sea	1	6.2	0	—	new / 0
Derelicts · Arafura Sea	1	6.1	0	—	new / 0
Derelicts · Celtic Sea	1	6.1	0	—	new / 0
Containers · North Sea	1	6.1	0	—	4.0× / 0.25
Derelicts · North Sea	1	6	0	—	new / 0
Exercises · Ionian Sea	1	5.2	0	—	new / 0
Nav aids · Indian Ocean	1	4.8	0	—	2.0× / 0.5
Ordnance · Yellow Sea	1	4.7	0	—	new / 0
Nav aids · Bristol Channel	1	3.9	0	—	2.0× / 0.5
Derelicts · Philippine Sea	1	3.7	1	3	4.0× / 0.25
Quakes · Bismarck Sea	1	3	0	—	4.0× / 0.25
Quakes · Caribbean Sea	1	3	0	—	4.0× / 0.25
Quakes · Java Sea	1	3	0	—	new / 0
Cable ops · Bay of Bengal	1	2.5	1	2	new / 0
Other · English Channel	1	2.4	0	—	new / 0
Incidents · Great Australian Bight	1	2	0	—	4.0× / 0.25
Exercises · Tyrrhenian Sea	1	1.7	0	—	0.5× / 2
Surveys · Bristol Channel	1	1.6	0	—	new / 0
Ordnance · Japan Sea	1	1.6	0	—	new / 0
Exercises · Gulf of Mexico	1	1.2	0	—	2.0× / 0.5
Incidents · Caribbean Sea	1	1	0	—	4.0× / 0.25
Derelicts · Coral Sea	1	0.9	0	—	2.0× / 0.5
Incidents · Mediterranean Sea - Eastern Basin	1	0.5	0	—	4.0× / 0.25
Other · Celtic Sea	1	0.4	0	—	new / 0
Nav aids · Arafura Sea	1	0.2	0	—	new / 0
Other · Bass Strait	1	0.2	0	—	new / 0
Quakes · The Coastal Waters of Southeast Alaska and British Columbia	1	0.2	1	0	new / 0
Incidents · Bali Sea	1	0.1	0	—	new / 0
Nav aids · Mozambique Channel	0	84	3	202	0.0× / 0.25
Wrecks · South China Sealong running	0	84	3	407	0.0× / 0.25
Nav aids · North Pacific Ocean	0	81.4	2	351	— / 0
Wrecks · Persian Gulf	0	71.5	2	247	— / 0
Nav aids · Bay of Bengallong running	0	56	2	512	0.0× / 0.25
Nav aids · Malacca Straitlong running	0	56	2	502	— / 0
Wrecks · North Sea	0	56	2	360	— / 0
Cable ops · Persian Gulf	0	56	2	185	— / 0
Nav aids · Solomon Sea	0	56	2	48	0.0× / 0.25
Wrecks · South Pacific Ocean	0	56	2	299	— / 0
Nav aids · Andaman or Burma Sea	0	47.1	1	140	0.0× / 0.25
Wrecks · Red Sea	0	36.5	1	295	— / 0
Other · Adriatic Sealong running	0	32.2	1	1,535	— / 0
Nav aids · Adriatic Sealong running	0	28	1	708	— / 0
Wrecks · Adriatic Sealong running	0	28	1	380	0.0× / 0.25
Other · Aegean Sea	0	28	1	43	— / 0
Wrecks · Arabian Sea	0	28	1	153	— / 0
Wrecks · Baltic Sea	0	28	1	61	— / 0
Incidents · Bay of Bengal	0	28	1	46	— / 0
Wrecks · Bay of Biscay	0	28	1	102	— / 0
Nav aids · Caribbean Sea	0	28	1	299	0.0× / 0.25
Nav aids · Eastern China Sea	0	28	1	128	— / 0
Other · Greenland Sea	0	28	1	189	— / 0
Incidents · Gulf of Aden	0	28	1	32	— / 0
Incidents · Gulf of Guinea	0	28	1	40	— / 0
Nav aids · Gulf of Mexico	0	28	1	280	— / 0
Wrecks · Irish Sea and St. George's Channel	0	28	1	240	0.0× / 0.25
Nav aids · Mediterranean Sea - Eastern Basin	0	28	1	32	— / 0
Nav aids · Mediterranean Sea - Western Basin	0	28	1	35	0.0× / 0.75
Surveys · Mediterranean Sea - Western Basin	0	28	1	51	— / 0
Wrecks · North Atlantic Oceanlong running	0	28	1	631	— / 0
Surveys · North Pacific Ocean	0	28	1	340	— / 0
Other · Persian Gulf	0	28	1	71	0.0× / 0.5
Nav aids · Red Sea	0	28	1	107	— / 0
Wrecks · Skagerrak	0	28	1	112	— / 0
Other · South China Sealong running	0	28	1	554	— / 0
Volcanic · South Pacific Ocean	0	28	1	36	— / 0
Nav aids · Sulu Sea	0	28	1	47	— / 0
Surveys · Sulu Sea	0	28	1	73	— / 0
Nav aids · Timor Sealong running	0	28	1	400	— / 0
Ordnance · Tyrrhenian Sealong running	0	28	1	482	0.0× / 0.5
Other · Red Sea	0	27.7	0	—	— / 0
Ordnance · North Pacific Ocean	0	22.5	0	—	0.0× / 0.5
Incidents · Adriatic Sea	0	22.4	0	—	— / 0
Cable ops · Gulf of Suez	0	14.1	0	—	— / 0
Surveys · Mediterranean Sea - Eastern Basin	0	13.8	0	—	0.0× / 0.25
Spills · The Coastal Waters of Southeast Alaska and British Columbia	0	11	0	—	0.0× / 0.25
Nav aids · Gulf of Suez	0	8.5	0	—	— / 0
Incidents · Ionian Sea	0	8.5	0	—	— / 0
Cable ops · Caribbean Sea	0	6.5	0	—	— / 0
Ordnance · Persian Gulf	0	5.9	0	—	0.0× / 0.25
Cable ops · Tasman Sea	0	3.1	0	—	0.0× / 0.5
Nav aids · Arabian Sea	0	1.5	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2001-02, 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.