Sea Ledger, May 2001

2001-05-01 to 2001-05-31 · archive

issued: 391
warning-days in force: 6,404
in force at month end: 199
sea × type cells: 190

baseline: same month, previous 5 years (2000-05, 1999-05, 1998-05, 1997-05)

By type

type	issued	warning-days	in force at end
Cable ops	80	832.7	28
Nav aids	67	2,287.5	73
Incidents	56	576.7	18
Surveys	49	451.7	12
Exercises	40	326.6	7
Quakes	25	76.4	3
Other	24	485.7	15
Ordnance	14	71.2	0
Derelicts	9	52.4	2
Debris	7	27.3	3
Missiles	6	62	2
Wrecks	6	982.2	32
Icebergs	3	8.8	0
Volcanic	2	33.2	1
Spills	2	61	0
Containers	1	6.9	1
War risk	0	62	2

By sea and type · 190 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	34	100.8	4	32	2.0× / 17.25
Surveys · Celtic Seasurge	27	63.9	2	29	3.2× / 8.5
Nav aids · South Atlantic Oceansurge	17	226.9	9	302	4.0× / 4.25
Incidents · North Pacific Oceansurge	11	96.3	5	71	2.6× / 4.25
Incidents · South Pacific Oceansurge	9	46.9	1	62	2.8× / 3.25
Quakes · South Pacific Ocean	9	27.2	0	—	1.1× / 8.25
Exercises · North Atlantic Ocean	9	19.4	0	—	1.5× / 6
Cable ops · Irish Sea and St. George's Channelsurge	8	20.4	1	21	16× / 0.5
Nav aids · North Sealong running	7	195.5	6	437	1.9× / 3.75
Nav aids · English Channelsurge	7	95	2	227	4.0× / 1.75
Ordnance · North Atlantic Oceansurge	7	33.6	0	—	28× / 0.25
Quakes · North Pacific Ocean	7	24.2	1	32	1.0× / 6.75
Missiles · North Pacific Oceansurge	6	62	2	35	2.2× / 2.75
Cable ops · English Channelsurge	6	27.8	0	—	4.8× / 1.25
Nav aids · Mozambique Channelsurge	5	164.8	7	294	20× / 0.25
Exercises · Aegean Sea	5	114.9	4	149	1.5× / 3.25
Cable ops · Persian Gulfsurge	5	84.9	4	234	10× / 0.5
Other · North Atlantic Ocean	5	67.2	2	152	1.3× / 4
Surveys · English Channelsurge	5	48.1	2	49	3.3× / 1.5
Nav aids · Celtic Seasurge	5	40	2	51	4.0× / 1.25
Exercises · South Atlantic Oceansurge	5	29	0	—	20× / 0.25
Incidents · North Atlantic Ocean	4	43.8	2	40	1.6× / 2.5
Incidents · Philippine Seasurge	4	37.2	1	61	3.2× / 1.25
Other · North Seasurgelong running	4	33.8	2	423	5.3× / 0.75
Nav aids · Mediterranean Sea - Western Basinsurge	4	12.8	0	—	5.3× / 0.75
Cable ops · North Sea	4	10.1	2	33	1.1× / 3.5
Quakes · Solomon Seasurge	4	10	2	22	2.3× / 1.75
Exercises · Adriatic Sea	4	9.6	0	—	1.8× / 2.25
Surveys · South Atlantic Oceansurge	4	9.6	0	—	8.0× / 0.5
Cable ops · North Atlantic Ocean	3	126.4	2	119	0.5× / 6.25
Surveys · North Atlantic Ocean	3	51.8	1	69	1.7× / 1.75
Exercises · Tyrrhenian Sea	3	43.3	1	31	1.7× / 1.75
Cable ops · Arabian Seanew	3	35.8	1	72	new / 0
Incidents · Coral Sea	3	31.7	1	34	1.7× / 1.75
Cable ops · Laccadive Seanew	3	30.1	0	—	new / 0
Ordnance · Greenland Seasurge	3	15.9	0	—	12× / 0.25
Cable ops · Eastern China Sea	3	10	2	9	1.5× / 2
Exercises · North Pacific Ocean	3	8.8	0	—	0.4× / 8.25
Incidents · Adriatic Seanew	3	5	0	—	new / 0
Nav aids · South Pacific Oceanlong running	2	248.9	4	391	2.7× / 0.75
Nav aids · North Atlantic Ocean	2	130.3	5	278	1.0× / 2
Wrecks · Coral Sealong running	2	98.2	3	367	8.0× / 0.25
Wrecks · Red Sealong running	2	88.2	3	387	8.0× / 0.25
Cable ops · Bay of Bengalnew	2	70	2	69	new / 0
Incidents · Indian Ocean	2	68.4	0	—	1.0× / 2
Other · Japan Seanew	2	66.1	2	34	new / 0
Surveys · North Sea	2	50.5	2	96	0.5× / 4
Incidents · Japan Seanew	2	42.2	2	23	new / 0
Exercises · Black Sea	2	41.2	1	43	2.7× / 0.75
Other · Tyrrhenian Sea	2	33.4	1	28	8.0× / 0.25
Nav aids · Persian Gulf	2	32.7	2	80	2.0× / 1
Cable ops · Indian Ocean	2	28.1	1	24	4.0× / 0.5
Other · Coral Sea	2	24.1	0	—	8.0× / 0.25
Surveys · Ligurian Sea	2	19	0	—	2.7× / 0.75
Cable ops · Celtic Sea	2	17	0	—	0.7× / 2.75
Exercises · Mediterranean Sea - Western Basin	2	15.6	0	—	0.8× / 2.5
Ordnance · Persian Gulf	2	13.8	0	—	2.7× / 0.75
Exercises · Bay of Bengal	2	13.3	1	17	8.0× / 0.25
Derelicts · Arabian Seanew	2	10.1	1	7	new / 0
Derelicts · North Atlantic Ocean	2	9.2	0	—	4.0× / 0.5
Ordnance · Tyrrhenian Sea	2	7.9	0	—	2.7× / 0.75
Quakes · Indian Ocean	2	6	0	—	0.7× / 3
Volcanic · Philippine Seanew	2	2.2	0	—	new / 0
Icebergs · North Atlantic Ocean	2	2	0	—	1.0× / 2
Nav aids · Bass Strait	2	1.5	0	—	2.7× / 0.75
Incidents · Tasman Sea	2	0.7	0	—	8.0× / 0.25
Incidents · Timor Seanew	2	0.3	0	—	new / 0
Incidents · Mediterranean Sea - Eastern Basinnew	2	0.2	0	—	new / 0
Incidents · Southern Oceannew	2	0.2	0	—	new / 0
Nav aids · Coral Sealong running	1	186.7	6	596	new / 0
Cable ops · South China Sea	1	127.2	4	121	0.8× / 1.25
Nav aids · Solomon Sea	1	113.4	4	140	new / 0
Nav aids · North Pacific Ocean	1	108.3	4	211	1.0× / 1
Nav aids · Irish Sea and St. George's Channellong running	1	80.1	2	393	4.0× / 0.25
Wrecks · South Atlantic Ocean	1	62	2	53	new / 0
Nav aids · Andaman or Burma Sea	1	54.8	2	121	new / 0
Wrecks · Arabian Sea	1	48.4	2	245	4.0× / 0.25
Surveys · Philippine Sea	1	45.6	1	36	4.0× / 0.25
Nav aids · Tyrrhenian Sea	1	43.8	2	52	0.7× / 1.5
Incidents · South Atlantic Ocean	1	41.4	1	39	0.4× / 2.5
Nav aids · Singapore Strait	1	39.5	1	79	new / 0
Nav aids · Tasman Sealong running	1	38.7	1	393	1.0× / 1
Spills · Gulf of Mexico	1	35	0	—	0.5× / 2
Nav aids · Inner Seas off the West Coast of Scotlandlong running	1	33.7	1	401	0.4× / 2.5
Other · Yellow Sea	1	32.1	1	35	new / 0
Nav aids · Great Australian Bight	1	31.8	1	42	2.0× / 0.5
Nav aids · Bristol Channel	1	31.2	1	62	4.0× / 0.25
Nav aids · Caribbean Sealong running	1	31	1	391	4.0× / 0.25
Nav aids · Bismarck Sea	1	28.6	1	28	new / 0
Cable ops · Philippine Sea	1	28.6	1	36	4.0× / 0.25
Incidents · South China Sea	1	24.6	0	—	2.0× / 0.5
Surveys · Adriatic Sea	1	24	0	—	1.3× / 0.75
Spills · North Atlantic Ocean	1	24	0	—	0.5× / 2
Other · English Channel	1	22.5	1	22	4.0× / 0.25
Surveys · Inner Seas off the West Coast of Scotland	1	20.1	1	40	4.0× / 0.25
Surveys · Mediterranean Sea - Eastern Basin	1	15.5	0	—	0.7× / 1.5
Incidents · Mozambique Channel	1	15.3	1	15	4.0× / 0.25
Nav aids · Bering Sea	1	13.9	0	—	new / 0
Exercises · Laccadive Sea	1	13.3	0	—	new / 0
Exercises · Arabian Sea	1	9.6	0	—	new / 0
Other · South Pacific Ocean	1	9.2	1	35	1.0× / 1
Other · Celtic Sea	1	9.1	0	—	new / 0
Exercises · Ligurian Sea	1	7.6	0	—	0.7× / 1.5
Incidents · Tyrrhenian Sea	1	7.5	1	7	new / 0
Incidents · Makassar Strait	1	7.4	1	7	new / 0
Derelicts · South Pacific Ocean	1	7	1	6	4.0× / 0.25
Containers · Inner Seas off the West Coast of Scotland	1	6.9	1	6	new / 0
Debris · South Atlantic Ocean	1	6.8	0	—	4.0× / 0.25
Icebergs · South Atlantic Ocean	1	6.8	0	—	2.0× / 0.5
Derelicts · Tasman Sea	1	6.8	0	—	new / 0
Debris · Coral Sea	1	6.7	0	—	new / 0
Debris · North Pacific Ocean	1	6.7	0	—	4.0× / 0.25
Derelicts · South China Sea	1	6.5	0	—	new / 0
Other · Rio de La Plata	1	6.4	0	—	new / 0
Debris · North Atlantic Ocean	1	6.1	1	6	1.3× / 0.75
Derelicts · South Atlantic Ocean	1	6.1	0	—	1.0× / 1
Incidents · Arabian Sea	1	5.2	0	—	4.0× / 0.25
Surveys · Tyrrhenian Sea	1	5.2	0	—	0.5× / 2
Cable ops · Yellow Sea	1	4.6	1	4	new / 0
Cable ops · Mediterranean Sea - Eastern Basin	1	4	0	—	2.0× / 0.5
Quakes · Arafura Sea	1	3	0	—	new / 0
Quakes · Bismarck Sea	1	3	0	—	0.6× / 1.75
Quakes · Molukka Sea	1	3	0	—	2.0× / 0.5
Derelicts · Coral Sea	1	2.7	0	—	new / 0
Cable ops · Aegean Sea	1	1.7	1	1	new / 0
Incidents · Bass Strait	1	1.6	0	—	new / 0
Surveys · Norwegian Sea	1	1.1	0	—	new / 0
Exercises · Gulf of Mexico	1	0.9	0	—	0.8× / 1.25
Other · Persian Gulf	1	0.9	0	—	new / 0
Other · Philippine Sea	1	0.9	0	—	new / 0
Debris · Great Australian Bight	1	0.6	0	—	new / 0
Incidents · Solomon Sea	1	0.4	0	—	new / 0
Debris · English Channel	1	0.3	1	0	new / 0
Other · Great Australian Bight	1	0.3	0	—	new / 0
Incidents · Great Australian Bight	1	0.2	0	—	4.0× / 0.25
Other · Irish Sea and St. George's Channel	1	0.2	0	—	4.0× / 0.25
Exercises · Ionian Sea	1	0.1	0	—	1.3× / 0.75
Debris · Mediterranean Sea - Western Basin	1	0.1	1	0	new / 0
Incidents · Celtic Sea	1	0	0	—	new / 0
Wrecks · South China Sealong running	0	93	3	499	— / 0
Wrecks · Tyrrhenian Sealong running	0	93	3	952	— / 0
Wrecks · English Channellong running	0	62	2	701	— / 0
Wrecks · North Sealong running	0	62	2	452	— / 0
War risk · Persian Gulf	0	62	2	119	— / 0
Wrecks · South Pacific Oceanlong running	0	62	2	391	0.0× / 0.5
Nav aids · Laccadive Sea	0	55.6	1	41	0.0× / 0.25
Incidents · Eastern China Sea	0	38.2	0	—	0.0× / 0.5
Nav aids · Adriatic Sealong running	0	31	1	800	— / 0
Other · Adriatic Sealong running	0	31	1	392	0.0× / 1
Wrecks · Adriatic Sealong running	0	31	1	472	— / 0
Incidents · Arafura Sea	0	31	1	44	0.0× / 0.25
Wrecks · Baltic Sea	0	31	1	153	— / 0
Nav aids · Bay of Bengallong running	0	31	1	604	— / 0
Wrecks · Bay of Biscay	0	31	1	194	— / 0
Cable ops · Black Sea	0	31	1	50	— / 0
Nav aids · Eastern China Sea	0	31	1	220	— / 0
Other · Greenland Sea	0	31	1	281	— / 0
Nav aids · Gulf of Mexicolong running	0	31	1	372	0.0× / 0.25
Wrecks · Irish Sea and St. George's Channel	0	31	1	332	— / 0
Wrecks · Kattegat	0	31	1	101	— / 0
Nav aids · Malacca Straitlong running	0	31	1	535	— / 0
Surveys · Mediterranean Sea - Western Basin	0	31	1	143	0.0× / 1.75
Wrecks · Mediterranean Sea - Western Basin	0	31	1	34	— / 0
Wrecks · North Atlantic Oceanlong running	0	31	1	723	— / 0
Incidents · North Sea	0	31	1	34	— / 0
Surveys · Persian Gulf	0	31	1	43	— / 0
Wrecks · Persian Gulf	0	31	1	122	— / 0
Nav aids · Red Sea	0	31	1	199	— / 0
Wrecks · Skagerrak	0	31	1	204	— / 0
Other · South Atlantic Ocean	0	31	1	86	0.0× / 0.25
Other · South China Sealong running	0	31	1	646	— / 0
Surveys · South China Sea	0	31	1	33	— / 0
Volcanic · South Pacific Ocean	0	31	1	128	— / 0
Nav aids · Sulu Sea	0	31	1	139	— / 0
Cable ops · Tasman Sea	0	31	1	33	0.0× / 0.25
Other · Tasman Sea	0	31	1	34	0.0× / 0.5
Wrecks · Tasman Sea	0	31	1	41	— / 0
Nav aids · Timor Sealong running	0	31	1	492	— / 0
Other · Mediterranean Sea - Western Basin	0	20.5	0	—	0.0× / 0.25
Cable ops · Inner Seas off the West Coast of Scotland	0	18.7	0	—	0.0× / 0.25
Cable ops · Caribbean Sea	0	14.5	0	—	— / 0
Cable ops · North Pacific Ocean	0	10	0	—	0.0× / 0.25
Derelicts · Tyrrhenian Sea	0	4	0	—	— / 0
Wrecks · Malacca Strait	0	3.4	0	—	— / 0
Surveys · Bristol Channel	0	2.3	0	—	— / 0
Other · Arabian Sea	0	2	0	—	0.0× / 0.25
Surveys · Eastern China Sea	0	2	0	—	— / 0
Other · Inner Seas off the West Coast of Scotland	0	2	0	—	— / 0
Spills · North Pacific Ocean	0	2	0	—	0.0× / 1
Other · Indian Ocean	0	0	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2001-05, 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.