Sea Ledger, March 2001

2001-03-01 to 2001-03-31 · archive

issued: 417
warning-days in force: 5,887
in force at month end: 180
sea × type cells: 181

baseline: same month, previous 5 years (2000-03, 1999-03, 1998-03, 1997-03)

By type

type	issued	warning-days	in force at end
Cable ops	114	783.2	25
Surveys	66	285.9	10
Incidents	55	619.5	14
Nav aids	42	2,139.2	66
Exercises	39	266.4	6
Quakes	25	90.1	3
Missiles	12	82.5	2
Ordnance	12	92.4	2
Other	11	333	12
Spills	11	117	6
Derelicts	8	77.9	2
Debris	6	31.5	0
Containers	6	32.2	1
Icebergs	4	25.9	1
Mines	4	5	1
Wrecks	2	812.6	26
Volcanic	0	31	1
War risk	0	62	2

By sea and type · 181 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Oceansurge	57	168.7	3	35	2.5× / 23.25
Surveys · Celtic Seasurge	18	28.5	1	31	6.5× / 2.75
Surveys · South Atlantic Oceannew	11	43.8	2	30	new / 0
Cable ops · Celtic Seasurge	11	41.1	1	29	44× / 0.25
Cable ops · South Pacific Oceansurge	10	42.2	2	43	40× / 0.25
Incidents · North Atlantic Oceansurge	8	49.1	1	78	6.4× / 1.25
Quakes · South Pacific Ocean	8	30.3	1	31	0.9× / 9
Incidents · South Atlantic Oceansurge	8	16.2	1	26	2.9× / 2.75
Surveys · English Channelsurge	8	9.1	0	—	6.4× / 1.25
Nav aids · English Channelsurge	7	53.8	2	166	5.6× / 1.25
Surveys · North Seasurge	7	47	1	35	28× / 0.25
Surveys · Inner Seas off the West Coast of Scotlandsurge	7	10	0	—	28× / 0.25
Cable ops · English Channelsurge	7	7.7	0	—	3.5× / 2
Nav aids · North Sealong running	6	201.2	7	376	1.5× / 4
Incidents · South Pacific Oceansurge	6	106.7	1	58	12× / 0.5
Cable ops · Arabian Seasurge	6	100.7	3	67	12× / 0.5
Missiles · North Pacific Oceansurge	6	62	2	37	2.2× / 2.75
Cable ops · North Seasurge	6	21.2	0	—	2.0× / 3
Missiles · South Pacific Oceannew	6	20.5	0	—	new / 0
Surveys · Irish Sea and St. George's Channelsurge	6	15.1	0	—	6.0× / 1
Exercises · Mediterranean Sea - Western Basinsurge	6	8.1	1	19	4.8× / 1.25
Nav aids · South Atlantic Ocean	5	154.6	4	241	1.3× / 3.75
Exercises · Aegean Sea	5	122.8	3	88	1.8× / 2.75
Cable ops · Mediterranean Sea - Eastern Basinsurge	5	76.3	3	44	3.3× / 1.5
Spills · North Atlantic Oceansurge	5	47	4	40	2.9× / 1.75
Incidents · South China Seasurge	4	108.7	2	45	4.0× / 1
Cable ops · Bay of Bengalnew	4	51.3	2	33	new / 0
Incidents · North Pacific Ocean	4	46.9	2	28	1.1× / 3.75
Spills · Gulf of Mexicosurge	4	42	2	23	2.3× / 1.75
Other · North Seasurge	4	39.8	1	362	8.0× / 0.5
Icebergs · South Atlantic Oceansurge	4	25.9	1	32	2.0× / 2
Exercises · North Atlantic Ocean	4	25.3	0	—	1.8× / 2.25
Ordnance · Persian Gulfsurge	4	22.4	1	9	8.0× / 0.5
Exercises · Bay of Bengalnew	4	17.9	0	—	new / 0
Incidents · Coral Seasurge	4	16.1	0	—	5.3× / 0.75
Quakes · North Pacific Ocean	4	14.5	1	31	0.9× / 4.25
Exercises · Adriatic Sea	4	10.8	0	—	0.4× / 9.5
Incidents · Tasman Seasurge	4	6.1	0	—	16× / 0.25
Incidents · Indian Oceansurge	3	81.6	1	61	4.0× / 0.75
Nav aids · Irish Sea and St. George's Channelsurge	3	73.5	2	332	2.4× / 1.25
Other · Japan Seanew	3	69.6	2	34	new / 0
Nav aids · Tasman Sea	3	46.3	2	332	1.2× / 2.5
Nav aids · Inner Seas off the West Coast of Scotlandsurge	3	41.1	2	340	3.0× / 1
Ordnance · North Atlantic Oceansurge	3	24.6	0	—	6.0× / 0.5
Exercises · Japan Seasurge	3	16.9	0	—	6.0× / 0.5
Exercises · Tyrrhenian Seasurge	3	12.6	0	—	2.0× / 1.5
Derelicts · North Atlantic Oceansurge	3	12.4	0	—	12× / 0.25
Cable ops · Bristol Channelsurge	3	11.2	0	—	4.0× / 0.75
Mines · North Seasurge	3	3.1	1	3	12× / 0.25
Incidents · Philippine Sea	3	1.8	1	29	1.7× / 1.75
Nav aids · Coral Sealong running	2	219.5	6	535	2.7× / 0.75
Other · South Atlantic Ocean	2	34.3	2	25	2.7× / 0.75
Incidents · Mediterranean Sea - Eastern Basin	2	25.7	1	25	8.0× / 0.25
Wrecks · South Atlantic Oceannew	2	17.4	1	15	new / 0
Exercises · North Pacific Ocean	2	15.3	0	—	0.5× / 4
Incidents · Eastern China Seanew	2	15.2	2	10	new / 0
Cable ops · North Pacific Ocean	2	13.5	2	38	4.0× / 0.5
Incidents · Arabian Sea	2	12.5	0	—	4.0× / 0.5
Containers · North Atlantic Oceannew	2	12.2	0	—	new / 0
Surveys · Tyrrhenian Sea	2	10.8	0	—	8.0× / 0.25
Surveys · North Atlantic Oceannew	2	8.9	2	8	new / 0
Quakes · Indian Ocean	2	6.3	0	—	0.8× / 2.5
Debris · North Atlantic Oceannew	2	6.2	0	—	new / 0
Quakes · Banda Sea	2	6	0	—	2.7× / 0.75
Exercises · Black Sea	2	5.4	1	5	2.7× / 0.75
Nav aids · Celtic Sea	2	5.3	1	33	4.0× / 0.5
Quakes · South Atlantic Ocean	2	4.2	1	24	4.0× / 0.5
Nav aids · Bering Seanew	2	4.1	1	11	new / 0
Incidents · North Seanew	2	0.4	0	—	new / 0
Nav aids · South Pacific Oceanlong running	1	291.6	8	602	2.0× / 0.5
Nav aids · North Atlantic Ocean	1	164.7	6	284	0.2× / 4.25
Nav aids · Mozambique Channel	1	111.1	4	233	new / 0
Nav aids · North Pacific Ocean	1	91.5	3	150	2.0× / 0.5
Nav aids · Persian Gulf	1	78.2	1	87	4.0× / 0.25
Cable ops · Persian Gulf	1	51.8	2	216	4.0× / 0.25
Other · Yellow Sea	1	33.2	1	34	new / 0
Incidents · Mozambique Channel	1	29.8	0	—	4.0× / 0.25
Nav aids · Singapore Strait	1	18.5	1	18	new / 0
Nav aids · Mediterranean Sea - Eastern Basin	1	18.4	0	—	4.0× / 0.25
Surveys · Adriatic Sea	1	17.4	1	17	4.0× / 0.25
Ordnance · Tyrrhenian Sea	1	17.3	0	—	1.0× / 1
Incidents · Gulf of Aden	1	16.5	0	—	new / 0
Incidents · Black Sea	1	15.8	1	15	new / 0
Spills · North Pacific Ocean	1	14	0	—	0.8× / 1.25
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	4.0× / 0.25
Derelicts · South Pacific Ocean	1	11.3	0	—	new / 0
Cable ops · Inner Seas off the West Coast of Scotland	1	11	0	—	new / 0
Exercises · Gulf of Mexico	1	10.5	0	—	2.0× / 0.5
Exercises · South Pacific Ocean	1	7.4	0	—	2.0× / 0.5
Derelicts · Gulf of Mexico	1	6.9	0	—	2.0× / 0.5
Containers · South Atlantic Ocean	1	6.7	0	—	new / 0
Derelicts · Arafura Sea	1	6.6	0	—	new / 0
Containers · North Pacific Ocean	1	6.6	0	—	new / 0
Debris · Arabian Sea	1	6.5	0	—	new / 0
Debris · English Channel	1	6.3	0	—	new / 0
Debris · South Atlantic Ocean	1	6.3	0	—	new / 0
Debris · Gulf of Mexico	1	6.2	0	—	new / 0
Containers · Tyrrhenian Sea	1	6.2	0	—	new / 0
Derelicts · Tasman Sea	1	6	0	—	new / 0
Surveys · Aegean Sea	1	5.6	1	5	new / 0
Quakes · Solomon Sea	1	5.4	0	—	1.0× / 1
Ordnance · Philippine Sea	1	4.9	0	—	4.0× / 0.25
Exercises · Mediterranean Sea - Eastern Basin	1	4.8	0	—	0.7× / 1.5
Ordnance · Japan Sea	1	4.5	0	—	new / 0
Derelicts · Timor Sea	1	3.7	1	3	new / 0
Exercises · Malacca Strait	1	3.4	1	3	2.0× / 0.5
Quakes · Sea of Okhotsk	1	3.2	0	—	new / 0
Exercises · South Atlantic Ocean	1	3.1	0	—	new / 0
Quakes · Andaman or Burma Sea	1	3	0	—	new / 0
Quakes · Eastern China Sea	1	3	0	—	2.0× / 0.5
Quakes · Gulf of Tomini	1	3	0	—	new / 0
Quakes · Seto Naikai or Inland Sea	1	3	0	—	new / 0
Quakes · South China Sea	1	3	0	—	new / 0
Surveys · Bristol Channel	1	2.6	0	—	4.0× / 0.25
Exercises · Ligurian Sea	1	2.1	0	—	0.6× / 1.75
Nav aids · Bass Strait	1	2	0	—	0.7× / 1.5
Nav aids · Bristol Channel	1	2	1	1	2.0× / 0.5
Mines · Inner Seas off the West Coast of Scotland	1	1.9	0	—	new / 0
Ordnance · Norwegian Sea	1	1.7	1	1	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	1.4	0	—	new / 0
Surveys · Ligurian Sea	1	1.3	0	—	2.0× / 0.5
Ordnance · Greenland Sea	1	1.1	0	—	4.0× / 0.25
Other · South Pacific Ocean	1	0.6	1	0	new / 0
Cable ops · Irish Sea and St. George's Channel	1	0.5	1	0	1.3× / 0.75
Containers · Persian Gulf	1	0.5	1	0	new / 0
Wrecks · Coral Sea	0	93	3	306	0.0× / 0.25
Cable ops · South China Sea	0	93	3	60	0.0× / 0.75
Wrecks · South China Sealong running	0	93	3	438	0.0× / 0.25
Wrecks · Tyrrhenian Sealong running	0	93	3	891	— / 0
Wrecks · English Channellong running	0	72.7	2	640	0.0× / 0.25
Nav aids · Malacca Straitlong running	0	62	2	533	0.0× / 0.25
Cable ops · North Atlantic Ocean	0	62	2	58	0.0× / 5.25
Wrecks · North Sealong running	0	62	2	391	0.0× / 0.5
War risk · Persian Gulf	0	62	2	58	— / 0
Nav aids · Solomon Sea	0	62	2	79	— / 0
Wrecks · South Pacific Ocean	0	62	2	330	— / 0
Nav aids · Laccadive Sea	0	60.6	1	68	0.0× / 0.25
Nav aids · Bay of Bengallong running	0	53.4	1	543	0.0× / 0.25
Wrecks · Persian Gulf	0	40.5	1	278	— / 0
Nav aids · Adriatic Sealong running	0	31	1	739	0.0× / 0.5
Other · Adriatic Sea	0	31	1	331	— / 0
Wrecks · Adriatic Sealong running	0	31	1	411	— / 0
Nav aids · Andaman or Burma Sea	0	31	1	60	0.0× / 0.25
Wrecks · Arabian Sea	0	31	1	184	— / 0
Wrecks · Baltic Sea	0	31	1	92	— / 0
Wrecks · Bay of Biscay	0	31	1	133	— / 0
Nav aids · Caribbean Sea	0	31	1	330	0.0× / 0.5
Cable ops · Eastern China Sea	0	31	1	38	0.0× / 0.75
Nav aids · Eastern China Sea	0	31	1	159	0.0× / 0.25
Other · Greenland Sea	0	31	1	220	— / 0
Nav aids · Gulf of Mexico	0	31	1	311	0.0× / 0.25
Wrecks · Irish Sea and St. George's Channel	0	31	1	271	— / 0
Wrecks · Kattegat	0	31	1	40	0.0× / 0.25
Surveys · Mediterranean Sea - Western Basin	0	31	1	82	0.0× / 0.75
Other · North Atlantic Ocean	0	31	1	91	0.0× / 0.5
Wrecks · North Atlantic Oceanlong running	0	31	1	662	— / 0
Other · Persian Gulf	0	31	1	102	0.0× / 0.25
Derelicts · Philippine Sea	0	31	1	34	0.0× / 0.25
Nav aids · Red Sea	0	31	1	138	— / 0
Wrecks · Red Sea	0	31	1	326	— / 0
Wrecks · Skagerrak	0	31	1	143	— / 0
Other · South China Sealong running	0	31	1	585	0.0× / 0.5
Volcanic · South Pacific Ocean	0	31	1	67	— / 0
Nav aids · Sulu Sea	0	31	1	78	— / 0
Surveys · Sulu Sea	0	31	1	104	— / 0
Nav aids · Timor Sealong running	0	31	1	431	— / 0
Nav aids · Tyrrhenian Sea	0	31	1	44	0.0× / 1.75
Incidents · Tyrrhenian Sea	0	31	1	38	— / 0
Incidents · Arafura Sea	0	29.4	0	—	— / 0
Nav aids · Japan Sea	0	29.4	0	—	— / 0
Surveys · North Pacific Ocean	0	22.4	0	—	0.0× / 0.5
Ordnance · Gulf of Mexico	0	15.9	0	—	— / 0
Nav aids · Mediterranean Sea - Western Basin	0	15.4	0	—	0.0× / 0.25
Incidents · Gulf of Guinea	0	9.5	0	—	— / 0
Quakes · The Coastal Waters of Southeast Alaska and British Columbia	0	2.8	0	—	— / 0
Quakes · Philippine Sea	0	2.4	0	—	0.0× / 1.75
Other · Aegean Sea	0	0.5	0	—	0.0× / 0.25
Incidents · Bay of Bengal	0	0.5	0	—	0.0× / 0.25
Cable ops · Indian Ocean	0	0	0	—	0.0× / 0.5
Derelicts · Mediterranean Sea - Eastern Basin	0	0	0	—	— / 0
Derelicts · South Atlantic Ocean	0	0	0	—	0.0× / 0.5

Cite: seahazards.com Sea Ledger, 2001-03, 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.