Sea Ledger, July 2001

2001-07-01 to 2001-07-31 · archive

issued: 452
warning-days in force: 7,164
in force at month end: 229
sea × type cells: 208

baseline: same month, previous 5 years (2000-07, 1999-07, 1998-07, 1997-07)

By type

type	issued	warning-days	in force at end
Incidents	84	1,205.5	44
Cable ops	70	810.5	23
Surveys	60	345	11
Nav aids	55	2,426.5	73
Exercises	42	359.1	8
Quakes	33	85.4	7
Other	32	599	23
Ordnance	20	95	2
Derelicts	17	83.7	3
Icebergs	11	62.3	0
Containers	7	35.8	1
Missiles	5	62	2
Wrecks	5	832.4	26
Spills	5	62	2
Towing	3	26.5	2
Debris	3	11	0
War risk	0	62	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	30	73.7	4	35	1.3× / 23
Surveys · North Seasurge	25	93	1	157	25× / 1
Incidents · Philippine Seasurge	15	102.7	9	38	6.7× / 2.25
Incidents · North Pacific Oceansurge	13	371.8	13	65	4.0× / 3.25
Surveys · English Channelsurge	12	51	1	32	9.6× / 1.25
Exercises · North Atlantic Oceansurge	11	57.2	1	35	2.8× / 4
Exercises · North Pacific Oceansurge	11	53.3	0	—	2.6× / 4.25
Quakes · South Pacific Ocean	11	26.9	3	30	1.2× / 9.25
Nav aids · North Seasurgelong running	9	186.1	5	498	3.0× / 3
Incidents · North Atlantic Oceansurge	9	129.8	4	69	4.5× / 2
Incidents · South Pacific Oceansurge	8	95.3	2	50	3.6× / 2.25
Other · Labrador Seanew	8	56.8	2	31	new / 0
Incidents · Coral Seasurge	8	45.8	1	57	4.6× / 1.75
Nav aids · South Atlantic Oceansurge	7	330.2	10	363	2.5× / 2.75
Cable ops · South China Seasurge	7	225.2	7	182	28× / 0.25
Ordnance · North Atlantic Oceansurge	7	40.1	0	—	4.7× / 1.5
Incidents · South Atlantic Oceansurge	7	27.2	3	32	2.0× / 3.5
Nav aids · North Atlantic Oceansurge	6	91.6	2	339	2.0× / 3
Icebergs · Labrador Seanew	6	47.4	0	—	new / 0
Cable ops · North Sea	6	19.5	1	35	1.3× / 4.75
Quakes · Philippine Sea	6	18	0	—	1.3× / 4.5
Missiles · North Pacific Ocean	5	62	2	35	1.8× / 2.75
Other · Caribbean Seanew	5	24.9	4	24	new / 0
Nav aids · Caribbean Seasurge	4	83.4	1	61	5.3× / 0.75
Nav aids · Celtic Seasurge	4	63.6	3	112	2.3× / 1.75
Spills · Gulf of Mexicosurge	4	54	1	23	2.3× / 1.75
Cable ops · Norwegian Seanew	4	52.3	2	26	new / 0
Other · North Atlantic Ocean	4	48.7	1	107	1.1× / 3.5
Nav aids · Inner Seas off the West Coast of Scotlandlong running	4	35.8	1	462	1.8× / 2.25
Ordnance · Eastern China Seanew	4	17.6	1	21	new / 0
Surveys · South Atlantic Oceannew	4	15.1	0	—	new / 0
Exercises · Mediterranean Sea - Western Basinsurge	4	14.8	1	19	2.0× / 2
Exercises · Ionian Seasurge	4	10.8	1	8	5.3× / 0.75
Icebergs · North Atlantic Ocean	4	6.6	0	—	1.3× / 3
Nav aids · Coral Seasurgelong running	3	189.6	6	657	2.0× / 1.5
Nav aids · South Pacific Oceansurge	3	71.7	3	293	6.0× / 0.5
Other · North Seasurgelong running	3	63.2	2	484	2.4× / 1.25
Incidents · South China Seasurge	3	61	3	40	3.0× / 1
Exercises · Mediterranean Sea - Eastern Basinsurge	3	49.5	1	34	4.0× / 0.75
Surveys · Mediterranean Sea - Eastern Basinsurge	3	39.3	1	26	12× / 0.25
Cable ops · Eastern China Seasurge	3	38.7	0	—	4.0× / 0.75
Surveys · North Atlantic Oceansurge	3	36.2	2	28	3.0× / 1
Exercises · Bay of Bengalnew	3	18.3	0	—	new / 0
Debris · North Atlantic Oceansurge	3	11	0	—	4.0× / 0.75
Exercises · Adriatic Sea	3	10.4	0	—	1.2× / 2.5
Cable ops · Celtic Sea	3	10.2	0	—	0.9× / 3.25
Cable ops · Irish Sea and St. George's Channelsurge	3	4.5	0	—	12× / 0.25
Incidents · Timor Seanew	3	2.1	0	—	new / 0
Derelicts · Celtic Seanew	3	0.3	0	—	new / 0
Nav aids · English Channel	2	93.4	3	288	0.7× / 2.75
Cable ops · Persian Gulf	2	85.4	2	295	8.0× / 0.25
Incidents · Indian Ocean	2	71.8	1	55	0.8× / 2.5
Other · Japan Seanew	2	68.3	2	35	new / 0
Cable ops · Gulf of Mexico	2	57.4	2	33	8.0× / 0.25
Cable ops · North Atlantic Ocean	2	56.7	2	180	0.2× / 10.5
Nav aids · Singapore Strait	2	53.2	2	140	8.0× / 0.25
Cable ops · Mediterranean Sea - Eastern Basinnew	2	40.7	1	41	new / 0
Other · South China Seanewlong running	2	32	1	707	new / 0
Cable ops · Bay of Bengalnew	2	31.5	0	—	new / 0
Incidents · Sea of Okhotsknew	2	24	1	23	new / 0
Towing · Sea of Azovnew	2	17.9	1	17	new / 0
Derelicts · North Atlantic Ocean	2	12.7	0	—	2.7× / 0.75
Containers · North Seanew	2	12.7	0	—	new / 0
Surveys · Celtic Sea	2	10.6	0	—	0.3× / 7
Derelicts · South Atlantic Oceannew	2	9.4	1	26	new / 0
Quakes · Solomon Sea	2	8.7	0	—	1.6× / 1.25
Nav aids · Tasman Sea	2	8.5	0	—	8.0× / 0.25
Surveys · South Pacific Oceannew	2	7.9	0	—	new / 0
Derelicts · Ionian Seanew	2	7	0	—	new / 0
Surveys · Irish Sea and St. George's Channel	2	7	1	43	1.1× / 1.75
Containers · Tasman Seanew	2	6.5	1	7	new / 0
Quakes · Banda Sea	2	6	0	—	4.0× / 0.5
Derelicts · North Pacific Ocean	2	3.9	1	3	4.0× / 0.5
Quakes · North Pacific Ocean	2	3.5	1	25	0.4× / 5
Ordnance · Mediterranean Sea - Western Basinnew	2	3.4	0	—	new / 0
Other · Irish Sea and St. George's Channelnew	2	2	0	—	new / 0
Incidents · Tasman Sea	2	1	0	—	2.7× / 0.75
Nav aids · Mozambique Channel	1	180.4	6	333	4.0× / 0.25
Nav aids · North Pacific Ocean	1	129.5	4	272	2.0× / 0.5
Exercises · Aegean Sea	1	98.5	3	210	2.0× / 0.5
Nav aids · Persian Gulf	1	65.3	2	62	2.0× / 0.5
Wrecks · Persian Gulf	1	60.1	2	183	4.0× / 0.25
Wrecks · Baltic Sea	1	43.9	2	214	new / 0
Other · South Pacific Ocean	1	38.2	1	52	4.0× / 0.25
Nav aids · Tyrrhenian Sea	1	35.1	1	98	0.7× / 1.5
Other · Yellow Sea	1	34	1	33	new / 0
Derelicts · South Pacific Ocean	1	31.4	0	—	2.0× / 0.5
Wrecks · South Pacific Ocean	1	28.5	1	28	new / 0
Nav aids · Skagerrak	1	28.3	1	28	new / 0
Incidents · Arabian Sea	1	28	0	—	2.0× / 0.5
Cable ops · Tasman Sea	1	26.2	0	—	1.0× / 1
Incidents · Makassar Strait	1	22.5	1	68	new / 0
Incidents · Sulu Sea	1	20.8	1	20	new / 0
Nav aids · Arabian Sea	1	19.4	1	19	4.0× / 0.25
Wrecks · Bay of Bengal	1	19.4	1	19	4.0× / 0.25
Incidents · Laccadive Sea	1	19.2	0	—	new / 0
Surveys · Tyrrhenian Sea	1	17.2	0	—	2.0× / 0.5
Incidents · Malacca Strait	1	16.8	1	16	new / 0
Other · Gulf of Mexico	1	15.7	1	15	new / 0
Other · Ionian Sea	1	15.6	1	15	4.0× / 0.25
Incidents · Mediterranean Sea - Eastern Basin	1	15.4	1	15	2.0× / 0.5
Incidents · Bay of Biscay	1	11.7	0	—	new / 0
Incidents · Gulf of Guinea	1	10.4	1	10	4.0× / 0.25
Incidents · Solomon Sea	1	10.2	1	37	4.0× / 0.25
Ordnance · Philippine Sea	1	9.6	0	—	new / 0
Towing · Sea of Okhotsk	1	8.6	1	8	new / 0
Icebergs · South Atlantic Ocean	1	8.3	0	—	2.0× / 0.5
Cable ops · English Channel	1	8.2	0	—	1.3× / 0.75
Spills · North Pacific Ocean	1	8	1	8	1.0× / 1
Ordnance · Persian Gulf	1	7.2	0	—	new / 0
Derelicts · Gulf of Mexico	1	7	0	—	new / 0
Incidents · Caribbean Sea	1	6.6	0	—	new / 0
Surveys · Philippine Sea	1	6.6	1	6	new / 0
Containers · South Pacific Ocean	1	6.5	0	—	0.8× / 1.25
Derelicts · Great Australian Bight	1	6.4	0	—	new / 0
Containers · Indian Ocean	1	6.1	0	—	new / 0
Other · Mozambique Channel	1	6.1	1	6	new / 0
Ordnance · Greenland Sea	1	6	0	—	4.0× / 0.25
Incidents · Red Sea	1	6	1	6	new / 0
Ordnance · Tyrrhenian Sea	1	5.4	0	—	4.0× / 0.25
Exercises · South Pacific Ocean	1	5.3	0	—	4.0× / 0.25
Cable ops · Arabian Sea	1	5.1	0	—	new / 0
Surveys · Ionian Sea	1	5	1	4	new / 0
Surveys · Sea of Okhotsk	1	4.6	1	4	4.0× / 0.25
Surveys · Mediterranean Sea - Western Basin	1	4.4	0	—	2.0× / 0.5
Derelicts · Arabian Sea	1	4.3	1	4	new / 0
Surveys · South China Sea	1	3.9	1	3	new / 0
Ordnance · Japan Sea	1	3.6	0	—	4.0× / 0.25
Cable ops · Mediterranean Sea - Western Basin	1	3.2	0	—	2.0× / 0.5
Exercises · Japan Sea	1	3.1	0	—	1.3× / 0.75
Quakes · Aegean Sea	1	3	0	—	new / 0
Quakes · Arabian Sea	1	3	0	—	new / 0
Quakes · Coral Sea	1	3	0	—	0.4× / 2.25
Quakes · Gulf of Alaska	1	3	0	—	1.3× / 0.75
Quakes · Gulf of Tomini	1	3	0	—	new / 0
Quakes · North Atlantic Ocean	1	3	0	—	1.3× / 0.75
Quakes · South Atlantic Ocean	1	3	0	—	1.0× / 1
Surveys · North Pacific Ocean	1	2.7	1	2	new / 0
Nav aids · Bass Strait	1	2.6	1	2	4.0× / 0.25
Nav aids · Arafura Sea	1	1.9	0	—	new / 0
Nav aids · Indian Ocean	1	1.9	0	—	4.0× / 0.25
Ordnance · Gulf of Oman	1	1.3	1	1	new / 0
Wrecks · North Atlantic Ocean	1	1.3	0	—	4.0× / 0.25
Derelicts · South China Sea	1	1.3	0	—	new / 0
Ordnance · Arabian Sea	1	0.8	0	—	new / 0
Other · Inner Seas off the West Coast of Scotland	1	0.8	0	—	new / 0
Quakes · Indian Ocean	1	0.6	1	0	0.5× / 2
Incidents · Great Australian Bight	1	0.4	0	—	new / 0
Quakes · Molukka Sea	1	0.4	1	0	new / 0
Quakes · Sulu Sea	1	0.3	1	0	new / 0
Containers · North Atlantic Ocean	1	0	0	—	new / 0
Derelicts · Tasman Sea	1	0	0	—	new / 0
Nav aids · Solomon Sea	0	155	5	201	— / 0
Wrecks · North Sealong running	0	93	3	513	0.0× / 0.25
Wrecks · Red Sealong running	0	93	3	448	— / 0
Wrecks · Coral Sea	0	62	2	176	— / 0
Wrecks · English Channellong running	0	62	2	762	0.0× / 0.25
Nav aids · Gulf of Suez	0	62	2	32	— / 0
Nav aids · Irish Sea and St. George's Channellong running	0	62	2	454	0.0× / 0.5
War risk · Persian Gulf	0	62	2	180	— / 0
Nav aids · South China Sea	0	62	2	47	— / 0
Wrecks · Tyrrhenian Sealong running	0	62	2	1,013	0.0× / 0.25
Wrecks · South China Sealong running	0	61.4	1	536	0.0× / 0.75
Nav aids · Andaman or Burma Sea	0	50.4	1	182	— / 0
Wrecks · Tasman Sea	0	50.4	1	102	— / 0
Incidents · Celtic Sea	0	49.8	0	—	— / 0
Nav aids · Adriatic Sea	0	31	1	60	— / 0
Other · Adriatic Sealong running	0	31	1	453	0.0× / 0.25
Wrecks · Arabian Sea	0	31	1	78	0.0× / 0.5
Wrecks · Bay of Biscay	0	31	1	255	— / 0
Nav aids · Bismarck Sea	0	31	1	89	— / 0
Cable ops · Black Sea	0	31	1	111	— / 0
Exercises · Black Sea	0	31	1	104	0.0× / 0.5
Other · Celtic Sea	0	31	1	33	0.0× / 0.25
Nav aids · Eastern China Sea	0	31	1	281	— / 0
Other · English Channel	0	31	1	40	0.0× / 0.25
Nav aids · Great Australian Bight	0	31	1	103	0.0× / 0.5
Other · Greenland Sea	0	31	1	342	— / 0
Wrecks · Irish Sea and St. George's Channellong running	0	31	1	393	0.0× / 0.5
Wrecks · Kattegat	0	31	1	162	— / 0
Nav aids · Laccadive Sea	0	31	1	96	— / 0
Nav aids · Malacca Straitlong running	0	31	1	596	0.0× / 0.25
Wrecks · Malacca Strait	0	31	1	35	— / 0
Cable ops · Philippine Sea	0	31	1	87	— / 0
Nav aids · Philippine Sea	0	31	1	47	0.0× / 0.25
Wrecks · Skagerrak	0	31	1	265	— / 0
Other · South Atlantic Ocean	0	31	1	147	— / 0
Nav aids · Sulu Sea	0	31	1	200	— / 0
Other · Tasman Sea	0	31	1	95	0.0× / 0.25
Nav aids · Timor Sealong running	0	31	1	553	— / 0
Nav aids · Mediterranean Sea - Western Basin	0	30.4	0	—	0.0× / 0.5
Incidents · Yellow Sea	0	30.4	0	—	— / 0
Surveys · Inner Seas off the West Coast of Scotland	0	23.4	0	—	0.0× / 0.25
Nav aids · Japan Sea	0	22.4	0	—	— / 0
Incidents · Bismarck Sea	0	19.4	0	—	— / 0
Nav aids · Gulf of Mexico	0	19.4	0	—	— / 0
Nav aids · Red Sea	0	12.4	0	—	— / 0
Cable ops · Yellow Sea	0	10	0	—	0.0× / 0.25
Surveys · Coral Sea	0	9	0	—	— / 0
Surveys · Persian Gulf	0	7.3	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2001-07, 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.