Sea Ledger, September 2001

2001-09-01 to 2001-09-30 · archive

issued: 285
warning-days in force: 6,934
in force at month end: 235
sea × type cells: 187

baseline: same month, previous 5 years (2000-09, 1999-09, 1998-09, 1997-09)

By type

type	issued	warning-days	in force at end
Exercises	54	376.7	9
Incidents	54	1,180.5	40
Cable ops	39	1,031.8	34
Nav aids	37	2,236.2	78
Quakes	30	84.9	4
Surveys	17	223.6	8
Other	14	665.4	24
Derelicts	14	93.4	2
Ordnance	8	45.3	0
Missiles	5	60	2
Spills	5	67	3
Debris	3	15.3	1
Wrecks	2	746.7	25
Icebergs	1	1.8	1
Containers	1	6	0
Volcanic	1	9.8	1
War risk	0	60	2
Towing	0	30	1

By sea and type · 187 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	14	60.1	3	30	0.8× / 18.75
Quakes · South Pacific Ocean	13	38.1	1	31	1.3× / 9.75
Incidents · North Pacific Oceansurge	12	301.2	12	68	2.0× / 6
Exercises · North Pacific Ocean	9	45.8	1	36	1.7× / 5.25
Exercises · Aegean Seasurge	8	120.6	3	271	2.3× / 3.5
Nav aids · North Atlantic Oceansurgelong running	8	107.3	4	400	3.6× / 2.25
Exercises · Tyrrhenian Seasurge	8	52.3	1	27	6.4× / 1.25
Incidents · North Atlantic Oceansurge	7	150.1	6	70	4.0× / 1.75
Quakes · North Pacific Ocean	7	21	0	—	1.9× / 3.75
Exercises · North Atlantic Ocean	6	31.1	0	—	1.5× / 4
Incidents · South Pacific Oceansurge	5	129.5	4	62	2.5× / 2
Incidents · South China Seasurge	5	80	4	60	5.0× / 1
Missiles · North Pacific Ocean	5	60	2	34	1.7× / 3
Incidents · Indian Oceansurge	5	59.5	2	52	3.3× / 1.5
Incidents · Philippine Seasurge	5	54.6	1	66	2.9× / 1.75
Nav aids · South Atlantic Oceanlong running	4	303.5	10	424	1.0× / 4
Nav aids · Tyrrhenian Seasurge	4	106.9	7	159	4.0× / 1
Cable ops · North Atlantic Ocean	4	95.8	2	97	0.6× / 6.25
Ordnance · North Atlantic Ocean	4	29.6	0	—	1.8× / 2.25
Exercises · Ionian Seasurge	4	11.8	0	—	16× / 0.25
Surveys · North Atlantic Oceansurge	4	9.9	0	—	16× / 0.25
Incidents · Coral Seasurge	4	2.1	1	10	5.3× / 0.75
Cable ops · South China Seanew	3	233.9	7	243	new / 0
Other · Japan Seanew	3	86.8	3	35	new / 0
Cable ops · Philippine Seanew	3	62.2	2	33	new / 0
Cable ops · Mediterranean Sea - Eastern Basinsurge	3	60.2	3	67	12× / 0.25
Other · Persian Gulfnew	3	55.9	2	49	new / 0
Surveys · Tyrrhenian Seasurge	3	42.7	2	24	2.4× / 1.25
Quakes · Indian Ocean	3	9.9	0	—	1.3× / 2.25
Exercises · Adriatic Sea	3	6.7	0	—	0.6× / 5.5
Nav aids · English Channel	2	148.1	6	349	2.0× / 1
Nav aids · Coral Sealong running	2	126.8	5	528	1.6× / 1.25
Nav aids · South Pacific Ocean	2	92.9	1	354	0.7× / 3
Cable ops · Eastern China Sea	2	72.7	3	44	2.0× / 1
Exercises · Black Sea	2	40.3	1	165	2.7× / 0.75
Surveys · Adriatic Sea	2	36.5	1	29	2.7× / 0.75
Nav aids · Mediterranean Sea - Western Basin	2	33.2	1	39	2.7× / 0.75
Nav aids · Inner Seas off the West Coast of Scotlandlong running	2	32.2	1	523	1.6× / 1.25
Derelicts · South Atlantic Oceannew	2	30.5	0	—	new / 0
Spills · North Pacific Ocean	2	28	0	—	1.1× / 1.75
Spills · Gulf of Mexico	2	24	2	41	0.6× / 3.25
Nav aids · Bristol Channelnew	2	19.6	0	—	new / 0
Cable ops · Celtic Sea	2	16.1	1	28	0.6× / 3.25
Debris · Philippine Seanew	2	13.5	0	—	new / 0
Ordnance · Tyrrhenian Seanew	2	12.3	0	—	new / 0
Exercises · Mediterranean Sea - Western Basin	2	11.8	1	34	0.8× / 2.5
Surveys · South Atlantic Ocean	2	10.7	0	—	2.7× / 0.75
Other · North Atlantic Oceannew	2	10.6	2	6	new / 0
Derelicts · North Atlantic Ocean	2	8	0	—	1.6× / 1.25
Exercises · Indian Oceannew	2	6.4	0	—	new / 0
Derelicts · South China Sea	2	5.8	1	4	4.0× / 0.5
Exercises · South Pacific Ocean	2	5.4	0	—	8.0× / 0.25
Exercises · Ligurian Sea	2	4.1	0	—	1.1× / 1.75
Exercises · South Atlantic Ocean	2	3.8	1	25	8.0× / 0.25
Quakes · Coral Sea	2	2.1	2	1	1.1× / 1.75
Derelicts · Irish Sea and St. George's Channelnew	2	0.7	0	—	new / 0
Nav aids · North Sealong running	1	152.4	5	559	0.3× / 3.75
Cable ops · Caribbean Sea	1	129.5	5	41	4.0× / 0.25
Nav aids · Irish Sea and St. George's Channellong running	1	73.2	3	515	0.6× / 1.75
Nav aids · Singapore Strait	1	63.2	3	201	4.0× / 0.25
Wrecks · English Channellong running	1	62.9	2	823	new / 0
Cable ops · Persian Gulf	1	62.1	2	356	4.0× / 0.25
Nav aids · Celtic Sea	1	61.2	2	173	0.6× / 1.75
Cable ops · Black Sea	1	60	2	172	4.0× / 0.25
Incidents · Sea of Okhotsk	1	39.7	2	31	new / 0
Other · South Atlantic Ocean	1	39.5	1	208	1.3× / 0.75
Cable ops · Gulf of Mexico	1	36.7	2	85	4.0× / 0.25
Other · Philippine Sea	1	33.8	0	—	new / 0
Wrecks · South China Sealong running	1	33.4	2	551	4.0× / 0.25
Other · Yellow Sea	1	31	1	34	new / 0
Nav aids · Philippine Sea	1	30.9	1	108	new / 0
Incidents · Tasman Sea	1	30.9	1	31	4.0× / 0.25
Nav aids · Mediterranean Sea - Eastern Basin	1	30.6	2	52	new / 0
Incidents · Mozambique Channel	1	26.4	1	26	4.0× / 0.25
Surveys · Yellow Sea	1	23.5	1	23	new / 0
Surveys · Inner Seas off the West Coast of Scotland	1	22	0	—	2.0× / 0.5
Other · South Pacific Ocean	1	20.7	1	53	new / 0
Surveys · Philippine Sea	1	19.5	1	44	new / 0
Surveys · Ligurian Sea	1	16.3	1	16	4.0× / 0.25
Incidents · Persian Gulf	1	14.5	1	14	new / 0
Incidents · Ionian Sea	1	13.8	1	13	new / 0
Cable ops · Bay of Bengal	1	13.2	1	13	new / 0
Cable ops · Yellow Sea	1	13	0	—	new / 0
Other · Rio de La Plata	1	10.8	1	10	new / 0
Exercises · Mediterranean Sea - Eastern Basin	1	10	0	—	0.5× / 2
Volcanic · Philippine Sea	1	9.8	1	9	new / 0
Surveys · Ionian Sea	1	9.4	1	9	new / 0
Derelicts · Indian Ocean	1	9	0	—	2.0× / 0.5
Cable ops · Tasman Sea	1	8.8	0	—	new / 0
Derelicts · South Pacific Ocean	1	8	0	—	2.0× / 0.5
Incidents · Irish Sea and St. George's Channel	1	7	1	6	new / 0
Derelicts · Great Australian Bight	1	6.2	0	—	new / 0
Derelicts · Persian Gulf	1	6.2	0	—	new / 0
Containers · Tasman Sea	1	6	0	—	new / 0
Incidents · Red Sea	1	5.7	1	5	new / 0
Cable ops · Adriatic Sea	1	4.6	1	4	new / 0
Exercises · Sea of Okhotsk	1	4.1	0	—	4.0× / 0.25
Spills · North Atlantic Ocean	1	4	1	4	0.4× / 2.25
Exercises · Gulf of Mexico	1	3.1	0	—	new / 0
Quakes · Banda Sea	1	3	0	—	2.0× / 0.5
Quakes · Ionian Sea	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	0.3× / 3.75
Quakes · Sea of Okhotsk	1	3	0	—	4.0× / 0.25
Exercises · Arabian Sea	1	2.5	1	2	new / 0
Ordnance · Mediterranean Sea - Western Basin	1	2.5	0	—	new / 0
Nav aids · Ionian Sea	1	2.4	0	—	new / 0
Other · Mediterranean Sea - Eastern Basin	1	2.3	1	2	4.0× / 0.25
Incidents · Bristol Channel	1	1.8	0	—	new / 0
Quakes · Solomon Sea	1	1.8	1	1	0.7× / 1.5
Debris · South Atlantic Ocean	1	1.8	1	1	new / 0
Icebergs · South Atlantic Ocean	1	1.8	1	1	0.3× / 3.5
Derelicts · Celtic Sea	1	1.6	0	—	new / 0
Nav aids · Arafura Sea	1	1.3	0	—	new / 0
Nav aids · Ligurian Sea	1	1.1	0	—	4.0× / 0.25
Ordnance · Persian Gulf	1	0.9	0	—	2.0× / 0.5
Surveys · North Sea	1	0.6	0	—	0.3× / 3.75
Incidents · Timor Sea	1	0.5	0	—	new / 0
Derelicts · Timor Sea	1	0.4	1	0	new / 0
Incidents · Arafura Sea	1	0.2	0	—	1.3× / 0.75
Incidents · The Northwestern Passages	1	0.1	0	—	new / 0
Nav aids · Mozambique Channellong running	0	180	6	394	0.0× / 0.75
Other · Caribbean Sea	0	120	4	67	— / 0
Nav aids · North Pacific Ocean	0	120	4	333	0.0× / 0.25
Wrecks · North Sealong running	0	90	3	574	0.0× / 0.5
Incidents · Tyrrhenian Sea	0	68.2	0	—	— / 0
Wrecks · Baltic Sea	0	60	2	275	— / 0
Wrecks · Bay of Bengal	0	60	2	80	— / 0
Wrecks · Coral Sea	0	60	2	237	0.0× / 0.25
Other · North Sealong running	0	60	2	545	0.0× / 1
War risk · Persian Gulf	0	60	2	241	— / 0
Wrecks · Persian Gulf	0	60	2	101	— / 0
Wrecks · Red Sealong running	0	60	2	509	— / 0
Nav aids · South China Sea	0	60	2	108	— / 0
Wrecks · Tyrrhenian Sealong running	0	60	2	1,074	0.0× / 0.75
Incidents · Bay of Biscay	0	57.4	1	50	0.0× / 0.25
Cable ops · Norwegian Sea	0	50	0	—	— / 0
Nav aids · Solomon Sea	0	43.3	1	262	— / 0
Incidents · Solomon Sea	0	33.8	0	—	— / 0
Nav aids · Arabian Sea	0	32.5	1	80	— / 0
Nav aids · Adriatic Sea	0	30	1	121	— / 0
Other · Adriatic Sealong running	0	30	1	514	— / 0
Nav aids · Andaman or Burma Sea	0	30	1	243	0.0× / 0.25
Surveys · Bay of Bengal	0	30	1	53	— / 0
Wrecks · Bay of Biscay	0	30	1	316	— / 0
Nav aids · Bering Sea	0	30	1	59	— / 0
Other · Bering Sea	0	30	1	58	— / 0
Nav aids · Bismarck Sea	0	30	1	150	— / 0
Nav aids · Caribbean Sea	0	30	1	122	— / 0
Nav aids · Eastern China Sea	0	30	1	342	— / 0
Other · English Channel	0	30	1	101	— / 0
Nav aids · Great Australian Bight	0	30	1	164	0.0× / 0.25
Other · Greenland Sealong running	0	30	1	403	— / 0
Other · Gulf of Mexico	0	30	1	76	— / 0
Nav aids · Gulf of Suez	0	30	1	31	— / 0
Wrecks · Irish Sea and St. George's Channellong running	0	30	1	454	0.0× / 0.25
Incidents · Japan Sea	0	30	1	39	0.0× / 0.25
Wrecks · Kattegat	0	30	1	223	— / 0
Nav aids · Laccadive Sea	0	30	1	157	— / 0
Nav aids · Malacca Straitlong running	0	30	1	657	0.0× / 0.25
Wrecks · Malacca Strait	0	30	1	96	0.0× / 0.25
Towing · Sea of Okhotsk	0	30	1	69	— / 0
Nav aids · Skagerrak	0	30	1	89	— / 0
Wrecks · Skagerrak	0	30	1	326	— / 0
Other · South China Sealong running	0	30	1	768	— / 0
Wrecks · South Pacific Ocean	0	30	1	89	— / 0
Nav aids · Sulu Sea	0	30	1	261	— / 0
Nav aids · Timor Sealong running	0	30	1	614	— / 0
Incidents · Laccadive Sea	0	27.4	0	—	— / 0
Nav aids · Alboran Sea	0	23.6	0	—	— / 0
Wrecks · Arabian Sea	0	20.4	0	—	0.0× / 0.25
Incidents · Gulf of Aden	0	20.4	0	—	— / 0
Cable ops · Sea of Okhotsk	0	20	0	—	— / 0
Incidents · South Atlantic Ocean	0	19.3	0	—	0.0× / 1.5
Exercises · Bay of Bengal	0	16.9	0	—	— / 0
Cable ops · Java Sea	0	16	0	—	— / 0
Other · Tasman Sea	0	13.5	0	—	— / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	0	11	0	—	— / 0
Derelicts · North Pacific Ocean	0	8	0	—	— / 0
Cable ops · North Pacific Ocean	0	7	0	—	— / 0
Incidents · Gulf of Guinea	0	6.4	0	—	— / 0
Cable ops · Tyrrhenian Sea	0	5.7	0	—	— / 0
Derelicts · Yellow Sea	0	5	0	—	— / 0
Derelicts · Arabian Sea	0	4	0	—	0.0× / 0.25
Surveys · South China Sea	0	2.5	0	—	— / 0
Cable ops · North Sea	0	2.4	0	—	0.0× / 2.5
Cable ops · Bristol Channel	0	1.8	0	—	— / 0
Other · North Pacific Ocean	0	0.5	0	—	0.0× / 0.25

Cite: seahazards.com Sea Ledger, 2001-09, 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.