Sea Ledger, August 2001

2001-08-01 to 2001-08-31 · archive

issued: 377
warning-days in force: 7,326
in force at month end: 229
sea × type cells: 201

baseline: same month, previous 5 years (2000-08, 1999-08, 1998-08, 1997-08)

By type

type	issued	warning-days	in force at end
Cable ops	86	959.2	37
Incidents	68	1,396.6	39
Nav aids	54	2,409	76
Exercises	41	301.9	9
Quakes	31	107.1	2
Surveys	26	261.2	4
Derelicts	21	65.7	8
Other	20	691.4	21
Ordnance	8	35.7	1
Missiles	6	62	2
Spills	6	78	2
Containers	5	37.6	0
Debris	3	15.9	0
Wrecks	1	797.2	25
Towing	1	45.5	1
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	22	69.6	2	32	1.1× / 21
Incidents · North Pacific Oceansurge	13	369.5	9	65	2.2× / 6
Cable ops · South China Seasurge	11	278.4	9	213	44× / 0.25
Incidents · South Atlantic Oceansurge	10	94.7	3	40	2.7× / 3.75
Cable ops · Bristol Channelnew	10	22.3	1	22	new / 0
Quakes · South Pacific Ocean	9	31.8	1	32	0.9× / 9.5
Exercises · North Atlantic Oceansurge	8	33.4	0	—	4.0× / 2
Exercises · North Pacific Oceansurge	8	27.9	2	21	3.6× / 2.25
Surveys · Celtic Sea	7	8.8	0	—	1.5× / 4.75
Incidents · North Atlantic Oceansurge	6	127.6	4	71	2.4× / 2.5
Other · North Seasurgelong running	6	94.3	2	515	3.4× / 1.75
Incidents · Indian Oceansurge	6	74.2	2	52	3.0× / 2
Missiles · North Pacific Oceansurge	6	62	2	36	2.2× / 2.75
Exercises · Mediterranean Sea - Eastern Basinsurge	6	38	1	49	8.0× / 0.75
Cable ops · Eastern China Seasurge	6	37.2	3	24	4.0× / 1.5
Surveys · English Channelsurge	6	16.7	0	—	2.7× / 2.25
Nav aids · South Atlantic Oceanlong running	5	325.5	11	394	1.3× / 3.75
Nav aids · Tyrrhenian Seasurge	5	73.2	3	129	3.3× / 1.5
Nav aids · North Atlantic Oceanlong running	5	69	3	370	1.8× / 2.75
Nav aids · Celtic Seasurge	5	68.8	2	143	2.5× / 2
Incidents · South Pacific Oceansurge	5	55.9	3	66	2.9× / 1.75
Incidents · Philippine Seasurge	4	181	3	69	5.3× / 0.75
Nav aids · North Sealong running	4	158.8	5	529	1.2× / 3.25
Nav aids · English Channelsurge	4	113.2	4	319	2.0× / 2
Cable ops · Norwegian Seasurge	4	62	2	46	8.0× / 0.5
Cable ops · Caribbean Seanew	4	44.6	4	11	new / 0
Nav aids · Persian Gulfsurge	4	42.6	0	—	5.3× / 0.75
Cable ops · North Sea	4	31	1	33	1.1× / 3.75
Surveys · North Sea	4	29	0	—	0.8× / 4.75
Ordnance · North Atlantic Oceansurge	4	15.4	0	—	5.3× / 0.75
Quakes · North Pacific Ocean	4	14.5	0	—	0.7× / 5.75
Quakes · Coral Sea	4	12	0	—	1.8× / 2.25
Other · Celtic Seanew	4	11.8	0	—	new / 0
Derelicts · South Pacific Oceansurge	4	10.6	0	—	16× / 0.25
Exercises · Adriatic Sea	4	9.8	0	—	0.9× / 4.25
Exercises · Gulf of Mexiconew	4	4.2	0	—	new / 0
Nav aids · Irish Sea and St. George's Channelsurgelong running	3	78.6	2	485	2.0× / 1.5
Incidents · Tyrrhenian Seanew	3	71.8	3	25	new / 0
Cable ops · North Atlantic Ocean	3	68	2	67	0.5× / 5.75
Cable ops · Persian Gulfsurge	3	64.1	3	326	3.0× / 1
Cable ops · Black Seasurge	3	54.1	2	142	6.0× / 0.5
Spills · North Pacific Oceansurge	3	48	0	—	4.0× / 0.75
Surveys · North Atlantic Ocean	3	43	1	51	1.2× / 2.5
Incidents · Bay of Biscaynew	3	32.9	2	20	new / 0
Incidents · Coral Sea	3	27	0	—	1.0× / 3
Derelicts · North Atlantic Oceansurge	3	13.7	1	23	6.0× / 0.5
Nav aids · Tasman Seasurge	3	11.3	0	—	2.4× / 1.25
Quakes · Indian Ocean	3	10.5	1	31	1.5× / 2
Exercises · South Pacific Oceannew	3	10.4	0	—	new / 0
Quakes · Bismarck Seasurge	3	9	0	—	3.0× / 1
Derelicts · Indian Oceansurge	3	3.3	1	3	4.0× / 0.75
Nav aids · Coral Sealong running	2	176	4	688	1.6× / 1.25
Incidents · South China Sea	2	79.9	2	71	4.0× / 0.5
Nav aids · Gulf of Suez	2	71.8	1	63	4.0× / 0.5
Other · Japan Sea	2	69.2	2	35	4.0× / 0.5
Surveys · Philippine Sea	2	42.4	1	37	8.0× / 0.25
Exercises · Mediterranean Sea - Western Basin	2	24.2	1	32	1.3× / 1.5
Exercises · Bay of Bengal	2	17.1	2	16	8.0× / 0.25
Containers · English Channelnew	2	13	0	—	new / 0
Containers · North Pacific Oceannew	2	12.5	0	—	new / 0
Derelicts · North Pacific Ocean	2	9.5	2	33	4.0× / 0.5
Cable ops · Timor Seanew	2	9.1	0	—	new / 0
Quakes · Molukka Sea	2	8.6	0	—	2.7× / 0.75
Cable ops · Gulf of Guineanew	2	8.3	0	—	new / 0
Cable ops · Bay of Bengalnew	2	7.8	0	—	new / 0
Ordnance · Persian Gulf	2	7.3	0	—	8.0× / 0.25
Quakes · Andaman or Burma Sea	2	6	0	—	8.0× / 0.25
Cable ops · Tasman Sea	2	5.9	0	—	2.7× / 0.75
Derelicts · South Atlantic Ocean	2	4.5	2	34	2.7× / 0.75
Exercises · Ligurian Seanew	2	2.4	0	—	new / 0
Incidents · Tasman Sea	2	2.1	1	13	8.0× / 0.25
Incidents · Arafura Seanew	2	0.2	0	—	new / 0
Nav aids · South Pacific Ocean	1	93.2	3	324	0.4× / 2.25
Nav aids · Singapore Strait	1	71.8	2	171	4.0× / 0.25
Cable ops · Mediterranean Sea - Eastern Basin	1	49.4	2	37	4.0× / 0.25
Incidents · Solomon Sea	1	47.8	2	38	new / 0
Wrecks · Bay of Bengal	1	44.5	2	50	new / 0
Other · Yellow Sea	1	35	1	34	2.0× / 0.5
Nav aids · Timor Sealong running	1	32.6	1	584	new / 0
Nav aids · Arabian Sea	1	31.5	2	50	1.3× / 0.75
Nav aids · Bering Sea	1	29.9	1	29	2.0× / 0.5
Cable ops · North Pacific Ocean	1	29.4	1	29	new / 0
Other · Bering Sea	1	28.6	1	28	new / 0
Incidents · Sea of Okhotsk	1	26.7	1	54	4.0× / 0.25
Incidents · Gulf of Aden	1	24.6	1	24	4.0× / 0.25
Other · South Pacific Ocean	1	24	1	38	2.0× / 0.5
Surveys · Sea of Okhotsk	1	23.9	0	—	new / 0
Surveys · Bay of Bengal	1	23.3	1	23	new / 0
Nav aids · Mediterranean Sea - Eastern Basin	1	22.9	1	22	4.0× / 0.25
Other · North Atlantic Ocean	1	21.1	0	—	0.7× / 1.5
Other · Persian Gulf	1	19.2	1	19	new / 0
Incidents · Arabian Sea	1	19.1	0	—	4.0× / 0.25
Cable ops · Philippine Sea	1	18	1	118	new / 0
Other · North Pacific Ocean	1	16.9	1	16	2.0× / 0.5
Nav aids · Bass Strait	1	16.7	0	—	new / 0
Surveys · Irish Sea and St. George's Channel	1	16.4	0	—	0.3× / 3.25
Cable ops · Sea of Okhotsk	1	16.4	1	16	new / 0
Incidents · Laccadive Sea	1	15.5	1	15	new / 0
Other · Philippine Sea	1	14.7	1	14	new / 0
Cable ops · Java Sea	1	14.4	1	14	new / 0
Spills · Gulf of Alaska	1	14	0	—	new / 0
Spills · Gulf of Mexico	1	13	1	43	0.7× / 1.5
Nav aids · Mediterranean Sea - Western Basin	1	9.8	1	9	new / 0
Incidents · Japan Sea	1	9.2	1	9	new / 0
Nav aids · Alboran Sea	1	7.6	1	7	new / 0
Debris · Philippine Sea	1	6.5	0	—	new / 0
Derelicts · Bass Strait	1	6.4	0	—	new / 0
Debris · Mediterranean Sea - Western Basin	1	6.4	0	—	new / 0
Exercises · Japan Sea	1	6.3	0	—	4.0× / 0.25
Derelicts · Tyrrhenian Sea	1	6.3	0	—	4.0× / 0.25
Containers · North Sea	1	6.1	0	—	new / 0
Cable ops · Celtic Sea	1	6	0	—	0.8× / 1.25
Towing · North Atlantic Ocean	1	5.8	0	—	new / 0
Ordnance · Tyrrhenian Sea	1	5.5	1	5	2.0× / 0.5
Ordnance · Philippine Sea	1	5.4	0	—	new / 0
Derelicts · Arabian Sea	1	4.4	1	35	new / 0
Surveys · Tyrrhenian Sea	1	3.8	0	—	2.0× / 0.5
Quakes · Arabian Sea	1	3	0	—	4.0× / 0.25
Quakes · Banda Sea	1	3	0	—	0.4× / 2.5
Quakes · Bering Sea	1	3	0	—	new / 0
Quakes · Eastern China Sea	1	3	0	—	4.0× / 0.25
Nav aids · Indian Ocean	1	3	0	—	1.3× / 0.75
Debris · North Atlantic Ocean	1	3	0	—	2.0× / 0.5
Derelicts · Persian Gulf	1	3	0	—	new / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	3	1	3	4.0× / 0.25
Cable ops · Tyrrhenian Sea	1	2.3	1	2	new / 0
Nav aids · Ionian Sea	1	1.9	0	—	new / 0
Derelicts · English Channel	1	1.6	0	—	new / 0
Derelicts · Yellow Sea	1	1.4	1	1	new / 0
Derelicts · Bay of Biscay	1	1	0	—	new / 0
Exercises · Malacca Strait	1	1	0	—	new / 0
Cable ops · Singapore Strait	1	0.9	0	—	new / 0
Incidents · Java Sea	1	0.8	0	—	4.0× / 0.25
Incidents · Great Australian Bight	1	0.6	0	—	new / 0
Nav aids · Bay of Biscay	1	0.3	0	—	new / 0
Other · Inner Seas off the West Coast of Scotland	1	0.2	0	—	new / 0
Incidents · Timor Sea	1	0.1	0	—	4.0× / 0.25
Nav aids · Mozambique Channel	0	186	6	364	0.0× / 0.5
Nav aids · Solomon Sea	0	155	5	232	0.0× / 0.25
Other · Caribbean Sea	0	124	4	37	— / 0
Nav aids · North Pacific Ocean	0	124	4	303	0.0× / 0.5
Wrecks · North Sealong running	0	93	3	544	0.0× / 0.25
Exercises · Aegean Sea	0	92.5	2	241	0.0× / 1.5
Wrecks · Red Sealong running	0	87.5	2	479	0.0× / 0.25
Wrecks · Baltic Sea	0	62	2	245	— / 0
Wrecks · Coral Sea	0	62	2	207	— / 0
Wrecks · English Channellong running	0	62	2	793	— / 0
War risk · Persian Gulf	0	62	2	211	— / 0
Wrecks · Persian Gulf	0	62	2	71	— / 0
Nav aids · South China Sea	0	62	2	78	— / 0
Wrecks · Tyrrhenian Sealong running	0	62	2	1,044	— / 0
Cable ops · Gulf of Mexico	0	60	1	64	— / 0
Nav aids · Adriatic Sea	0	31	1	91	0.0× / 0.5
Other · Adriatic Sealong running	0	31	1	484	— / 0
Nav aids · Andaman or Burma Sea	0	31	1	213	— / 0
Wrecks · Arabian Sea	0	31	1	109	— / 0
Wrecks · Bay of Biscay	0	31	1	286	— / 0
Nav aids · Bismarck Sea	0	31	1	120	— / 0
Exercises · Black Sea	0	31	1	135	0.0× / 1.25
Nav aids · Caribbean Sea	0	31	1	92	— / 0
Nav aids · Eastern China Sea	0	31	1	312	— / 0
Other · English Channel	0	31	1	71	— / 0
Nav aids · Great Australian Bight	0	31	1	134	0.0× / 0.5
Other · Greenland Sealong running	0	31	1	373	0.0× / 0.25
Incidents · Gulf of Guinea	0	31	1	41	0.0× / 0.25
Other · Gulf of Mexico	0	31	1	46	— / 0
Nav aids · Inner Seas off the West Coast of Scotlandlong running	0	31	1	493	0.0× / 1.25
Wrecks · Irish Sea and St. George's Channellong running	0	31	1	424	— / 0
Wrecks · Kattegat	0	31	1	193	— / 0
Nav aids · Laccadive Sea	0	31	1	127	— / 0
Nav aids · Malacca Straitlong running	0	31	1	627	— / 0
Wrecks · Malacca Strait	0	31	1	66	— / 0
Nav aids · Philippine Sea	0	31	1	78	— / 0
Towing · Sea of Okhotsk	0	31	1	39	— / 0
Nav aids · Skagerrak	0	31	1	59	— / 0
Wrecks · Skagerrak	0	31	1	296	— / 0
Other · South Atlantic Ocean	0	31	1	178	0.0× / 0.5
Other · South China Sealong running	0	31	1	738	0.0× / 0.5
Surveys · South China Sea	0	31	1	34	— / 0
Wrecks · South China Sealong running	0	31	1	521	— / 0
Wrecks · South Pacific Ocean	0	31	1	59	— / 0
Nav aids · Sulu Sea	0	31	1	231	— / 0
Other · Tasman Sea	0	31	1	126	— / 0
Incidents · Mediterranean Sea - Eastern Basin	0	30.4	0	—	0.0× / 0.75
Incidents · Makassar Strait	0	25.5	0	—	— / 0
Incidents · Malacca Strait	0	25.5	0	—	— / 0
Incidents · Sulu Sea	0	17.6	0	—	— / 0
Wrecks · Tasman Sea	0	14.2	0	—	— / 0
Surveys · Ionian Sea	0	9.9	0	—	— / 0
Towing · Sea of Azov	0	8.7	0	—	— / 0
Surveys · Mediterranean Sea - Eastern Basin	0	8	0	—	0.0× / 1
Other · Ionian Sea	0	6	0	—	— / 0
Other · Labrador Sea	0	6	0	—	— / 0
Containers · Tasman Sea	0	6	0	—	— / 0
Incidents · Red Sea	0	5.4	0	—	— / 0
Surveys · North Pacific Ocean	0	5	0	—	0.0× / 0.5
Exercises · Ionian Sea	0	3.7	0	—	0.0× / 1.75
Other · Mozambique Channel	0	3.4	0	—	— / 0
Quakes · Sulu Sea	0	2.7	0	—	— / 0
Ordnance · Gulf of Oman	0	1.5	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2001-08, 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.