Sea Ledger, March 2015

2015-03-01 to 2015-03-31 · archive

issued: 568
warning-days in force: 12,477
in force at month end: 422
sea × type cells: 242

baseline: same month, previous 5 years (2014-03, 2013-03, 2012-03, 2011-03, 2010-03)

By type

type	issued	warning-days	in force at end
Incidents	150	2,485.4	81
Exercises	111	1,094.2	35
Nav aids	61	2,794.8	94
Derelicts	45	348.8	13
Icebergs	39	54.7	4
Missiles	37	273.1	9
Quakes	31	79.3	11
Cable ops	22	1,131.6	38
Surveys	20	1,294.2	40
Other	12	742.9	22
Wrecks	12	1,207.5	43
Spills	12	143	6
Debris	6	14.3	1
Ordnance	4	153.4	4
Restricted	2	184	7
Piracy	2	19.3	1
Volcanic	1	134.1	3
Containers	1	3	0
Structures	0	257.4	8
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
Incidents · North Pacific Ocean	34	380.1	7	82	1.8× / 19.4
Icebergs · Labrador Seasurge	31	34	2	32	3.3× / 9.4
Exercises · North Pacific Ocean	27	142.1	5	61	2.0× / 13.8
Incidents · North Atlantic Oceansurge	21	396.5	14	71	2.2× / 9.6
Incidents · South China Sea	16	347.7	13	80	1.7× / 9.4
Nav aids · South Atlantic Oceansurge	16	338.4	15	143	2.4× / 6.8
Exercises · Yellow Sea	13	114.6	3	32	1.9× / 7
Incidents · Mediterranean Sea - Eastern Basinsurge	12	265.4	9	54	3.3× / 3.6
Incidents · South Pacific Oceansurge	11	109.6	3	111	2.3× / 4.8
Derelicts · North Atlantic Oceansurge	11	80.7	3	223	4.6× / 2.4
Exercises · Arabian Sea	10	86.5	3	32	1.4× / 7.4
Quakes · South Pacific Ocean	10	24.2	4	29	0.7× / 14.8
Exercises · Bay of Bengal	9	105.5	2	33	1.0× / 9.2
Missiles · North Atlantic Ocean	9	71.4	4	32	1.7× / 5.2
Exercises · Black Sea	8	74.6	3	36	1.9× / 4.2
Surveys · South Atlantic Ocean	7	264.9	7	244	1.3× / 5.6
Incidents · Arabian Seasurge	7	197.9	6	101	8.8× / 0.8
Nav aids · Coral Sea	7	184.4	7	347	1.3× / 5.4
Incidents · South Atlantic Ocean	7	148.1	6	49	1.2× / 5.8
Incidents · Indian Ocean	7	79.7	3	71	0.9× / 7.6
Missiles · North Pacific Ocean	7	37.6	0	—	1.4× / 5
Derelicts · North Pacific Oceansurge	7	21.4	1	57	4.4× / 1.6
Exercises · Mediterranean Sea - Eastern Basin	7	12.5	1	31	1.6× / 4.4
Incidents · Gulf of Mexicosurge	6	116.7	5	55	6.0× / 1
Nav aids · North Sealong running	5	369.2	11	850	0.5× / 10.8
Exercises · Aegean Seasurge	5	190.4	7	88	4.2× / 1.2
Nav aids · Irish Sea and St. George's Channelsurge	5	79.1	2	242	2.5× / 2
Spills · North Atlantic Oceansurge	5	69	2	42	6.3× / 0.8
Exercises · South Pacific Ocean	5	16.2	2	34	1.4× / 3.6
Quakes · North Pacific Ocean	5	15	0	—	0.1× / 46.4
Icebergs · South Atlantic Oceansurge	5	14	1	33	2.1× / 2.4
Missiles · South Pacific Oceansurge	5	12.2	0	—	8.3× / 0.6
Cable ops · South Atlantic Ocean	4	223.3	5	173	0.1× / 33.8
Surveys · North Atlantic Oceansurge	4	163.9	5	301	20× / 0.2
Nav aids · Inner Seas off the West Coast of Scotlandlong running	4	126.6	5	635	1.1× / 3.8
Exercises · South China Sea	4	81.6	1	34	1.8× / 2.2
Cable ops · North Seasurge	4	77.6	4	47	3.3× / 1.2
Derelicts · South Pacific Oceansurgelong running	4	61.7	2	1,007	6.7× / 0.6
Exercises · Philippine Sea	4	44.4	3	34	1.2× / 3.4
Wrecks · Solomon Seasurge	4	34.9	3	21	20× / 0.2
Spills · Gulf of Mexico	4	31	3	23	1.4× / 2.8
Ordnance · North Pacific Oceannew	4	29.4	0	—	new / 0
Exercises · Baltic Sea	4	16.1	1	32	1.2× / 3.4
Derelicts · Mozambique Channelnew	4	12.3	1	9	new / 0
Incidents · Coral Sea	4	9.4	0	—	1.0× / 4
Derelicts · Yellow Seanew	4	9	0	—	new / 0
Quakes · Solomon Sea	4	6	3	24	1.5× / 2.6
Nav aids · Indian Oceansurgelong running	3	100.6	4	405	2.5× / 1.2
Nav aids · Great Australian Bightsurge	3	60.2	2	117	7.5× / 0.4
Wrecks · Persian Gulfnew	3	56.3	3	30	new / 0
Missiles · Norwegian Seanew	3	55.6	0	—	new / 0
Missiles · Barentsz Seasurge	3	12.6	1	32	2.1× / 1.4
Exercises · Gulf of Mexicosurge	3	10.8	0	—	15× / 0.2
Quakes · Molukka Seanew	3	8.7	1	30	new / 0
Exercises · Caribbean Seasurge	3	8.2	0	—	7.5× / 0.4
Quakes · Indian Oceansurge	3	7.6	1	28	2.5× / 1.2
Nav aids · Gulf of Alaska	3	7.5	0	—	1.3× / 2.4
Derelicts · Caribbean Seasurge	3	5.4	1	25	3.8× / 0.8
Incidents · Solomon Seasurge	3	4.9	0	—	3.0× / 1
Nav aids · Arabian Sealong running	2	123.6	4	1,005	5.0× / 0.4
Incidents · Mozambique Channel	2	92.2	2	76	1.1× / 1.8
Other · South China Sealong running	2	90.7	3	587	10× / 0.2
Wrecks · South Atlantic Oceannew	2	76.6	3	157	new / 0
Derelicts · Gulf of Mexico	2	70.3	3	64	3.3× / 0.6
Nav aids · English Channellong running	2	69.4	3	1,090	0.6× / 3.6
Incidents · Bay of Bengal	2	50.3	2	99	1.7× / 1.2
Surveys · Bay of Bengalnew	2	42.8	2	21	new / 0
Exercises · South Atlantic Ocean	2	38.9	0	—	0.2× / 8.8
Exercises · Laccadive Sea	2	33.1	1	33	1.1× / 1.8
Surveys · North Sea	2	28.4	1	24	2.0× / 1
Incidents · Philippine Sea	2	28.2	2	60	1.1× / 1.8
Spills · North Pacific Ocean	2	20	1	19	2.5× / 0.8
Exercises · Alboran Sea	2	17.5	1	17	10× / 0.2
Other · Gulf of Mexico	2	17.1	0	—	10× / 0.2
Missiles · Arabian Sea	2	16.6	0	—	3.3× / 0.6
Cable ops · North Atlantic Ocean	2	13.1	2	9	0.4× / 5.2
Incidents · Java Sea	2	12.6	1	29	10× / 0.2
Missiles · Bay of Bengal	2	9.3	2	6	1.1× / 1.8
Incidents · Tyrrhenian Seanew	2	7.6	0	—	new / 0
Other · Coral Seanew	2	6.4	0	—	new / 0
Quakes · Gulf of Tomininew	2	6	0	—	new / 0
Debris · North Pacific Ocean	2	6	0	—	5.0× / 0.4
Quakes · Bismarck Sea	2	5	1	15	3.3× / 0.6
Missiles · Indian Ocean	2	3.5	0	—	1.7× / 1.2
Incidents · Red Seanew	2	2.5	1	2	new / 0
Nav aids · Bristol Channelnew	2	2	0	—	new / 0
Nav aids · North Atlantic Oceanlong running	1	232.5	7	726	0.3× / 4
Other · North Sealong running	1	155	5	930	0.7× / 1.4
Restricted · North Sealong running	1	146.6	5	1,317	2.5× / 0.4
Cable ops · Gulf of Mexicolong running	1	124	4	424	0.8× / 1.2
Cable ops · Arabian Sea	1	116.5	4	78	0.8× / 1.2
Nav aids · Gulf of Mexicolong running	1	114.5	3	409	0.8× / 1.2
Cable ops · South China Sea	1	112.1	3	174	0.4× / 2.4
Wrecks · North Atlantic Oceanlong running	1	100	4	1,270	new / 0
Other · North Pacific Oceanlong running	1	90.2	2	1,079	0.8× / 1.2
Surveys · Indian Ocean	1	74.6	3	80	2.5× / 0.4
Surveys · Mediterranean Sea - Eastern Basin	1	73	1	91	0.7× / 1.4
Volcanic · South Pacific Ocean	1	72.1	1	82	new / 0
Nav aids · Celtic Sealong running	1	63.1	2	887	1.0× / 1
Cable ops · Persian Gulf	1	62	2	89	1.7× / 0.6
Cable ops · Philippine Sea	1	62	2	33	5.0× / 0.2
Other · North Atlantic Oceanlong running	1	56.6	2	505	1.0× / 1
Cable ops · Gulf of Guinea	1	47.8	2	44	1.7× / 0.6
Cable ops · Indian Ocean	1	43.6	2	71	1.3× / 0.8
Wrecks · South China Sea	1	39.4	2	323	5.0× / 0.2
Incidents · Laccadive Sea	1	39.1	0	—	1.7× / 0.6
Nav aids · Andaman or Burma Sea	1	33.4	1	166	5.0× / 0.2
Nav aids · Bay of Bengallong running	1	33.2	1	389	5.0× / 0.2
Incidents · Caribbean Sea	1	32.2	0	—	0.4× / 2.8
Exercises · North Atlantic Ocean	1	31.8	0	—	0.2× / 5.2
Nav aids · Bass Straitlong running	1	31.1	1	729	0.8× / 1.2
Other · English Channel	1	31	1	57	new / 0
Incidents · Eastern China Sea	1	29.7	1	76	5.0× / 0.2
Cable ops · Bay of Bengal	1	25.6	1	61	0.4× / 2.4
Incidents · Tasman Sea	1	23.2	1	68	0.8× / 1.2
Other · Irish Sea and St. George's Channel	1	22.5	1	22	2.5× / 0.4
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	22	0	—	1.7× / 0.6
Nav aids · Gulf of Suez	1	21.6	1	21	new / 0
Cable ops · Andaman or Burma Sea	1	18.5	1	18	5.0× / 0.2
Wrecks · Laccadive Sea	1	15.8	0	—	new / 0
Other · Indian Ocean	1	14.7	0	—	1.7× / 0.6
Surveys · Andaman or Burma Sea	1	14.5	0	—	2.5× / 0.4
Incidents · Davis Strait	1	11.7	1	51	1.3× / 0.8
Incidents · Singapore Strait	1	11.7	0	—	new / 0
Incidents · Ligurian Sea	1	9	1	9	new / 0
Cable ops · Ceram Sea	1	8.6	0	—	new / 0
Missiles · Arctic Ocean	1	8	1	32	2.5× / 0.4
Missiles · Laccadive Sea	1	7.8	0	—	2.5× / 0.4
Surveys · Laccadive Sea	1	7.6	1	7	5.0× / 0.2
Incidents · Mediterranean Sea - Western Basin	1	7.5	1	7	1.7× / 0.6
Piracy · Malacca Strait	1	6.6	0	—	new / 0
Restricted · South China Sea	1	6.4	1	6	new / 0
Exercises · Coral Sea	1	5.3	0	—	0.6× / 1.6
Cable ops · North Pacific Ocean	1	5.1	1	62	new / 0
Cable ops · Celtic Sea	1	4.8	0	—	1.0× / 1
Derelicts · Mediterranean Sea - Western Basin	1	4.8	0	—	5.0× / 0.2
Quakes · Philippine Sea	1	4.7	0	—	0.4× / 2.6
Incidents · Japan Sea	1	4.6	1	4	new / 0
Missiles · Philippine Sea	1	4.2	0	—	new / 0
Missiles · South Atlantic Ocean	1	3.3	0	—	0.8× / 1.2
Incidents · Bismarck Sea	1	3.2	0	—	1.7× / 0.6
Derelicts · Arafura Sea	1	3	0	—	5.0× / 0.2
Debris · Coral Sea	1	3	0	—	1.3× / 0.8
Derelicts · Coral Sea	1	3	0	—	2.5× / 0.4
Debris · Gulf of Mexico	1	3	0	—	1.7× / 0.6
Containers · Mediterranean Sea - Eastern Basin	1	3	0	—	new / 0
Derelicts · Mediterranean Sea - Eastern Basin	1	3	0	—	0.8× / 1.2
Icebergs · North Atlantic Ocean	1	3	0	—	0.2× / 5.4
Derelicts · Persian Gulf	1	3	0	—	1.7× / 0.6
Derelicts · South China Sea	1	3	0	—	5.0× / 0.2
Icebergs · South Pacific Ocean	1	3	0	—	2.5× / 0.4
Exercises · Gulf of Alaska	1	2.1	0	—	new / 0
Derelicts · Bay of Bengal	1	2	0	—	new / 0
Derelicts · Indian Ocean	1	1.9	0	—	0.2× / 4.2
Nav aids · Tasman Sea	1	1.8	0	—	1.3× / 0.8
Derelicts · Philippine Sea	1	1.4	0	—	new / 0
Debris · North Atlantic Ocean	1	1.3	1	1	1.3× / 0.8
Piracy · Bay of Bengal	1	1	1	0	new / 0
Debris · South Pacific Ocean	1	1	0	—	1.7× / 0.6
Derelicts · Bering Sea	1	0.9	0	—	new / 0
Nav aids · Strait of Gibraltar	1	0.7	0	—	new / 0
Surveys · Celtic Sea	1	0.5	0	—	new / 0
Quakes · Coral Sea	1	0.5	1	0	0.7× / 1.4
Icebergs · Indian Ocean	1	0.4	1	0	1.0× / 1
Wrecks · Arabian Sealong running	0	217	7	712	0.0× / 0.4
Surveys · Arctic Oceanlong running	0	186	6	1,618	— / 0
Surveys · Beaufort Sealong running	0	155	5	1,693	— / 0
Nav aids · Caribbean Sealong running	0	155	5	533	0.0× / 1.6
Nav aids · North Pacific Ocean	0	124	4	263	0.0× / 3
Structures · North Sealong running	0	124	4	1,324	— / 0
Wrecks · North Sealong running	0	124	4	750	0.0× / 0.2
Nav aids · South China Sealong running	0	96.5	3	1,324	— / 0
Other · Caribbean Sea	0	93	3	81	0.0× / 0.4
Ordnance · North Sealong running	0	93	3	1,224	0.0× / 0.2
Nav aids · Persian Gulflong running	0	73.7	2	629	— / 0
Surveys · Caribbean Sea	0	62	2	193	— / 0
Wrecks · Caribbean Sea	0	62	2	168	— / 0
Exercises · Ionian Sea	0	62	2	84	0.0× / 0.2
Nav aids · Kara Sealong running	0	62	2	1,301	— / 0
Nav aids · Mediterranean Sea - Eastern Basin	0	62	2	153	— / 0
War risk · Mediterranean Sea - Eastern Basinlong running	0	62	2	1,406	— / 0
Nav aids · Mediterranean Sea - Western Basin	0	62	2	166	0.0× / 1.8
Volcanic · Philippine Sealong running	0	62	2	1,066	— / 0
Nav aids · Sea of Okhotsklong running	0	62	2	1,197	0.0× / 0.2
Structures · South Atlantic Ocean	0	62	2	59	0.0× / 0.2
Wrecks · English Channel	0	47.5	1	251	0.0× / 0.2
Nav aids · Adriatic Sea	0	31	1	67	— / 0
Missiles · Aegean Sea	0	31	1	88	— / 0
Derelicts · Arabian Sea	0	31	1	32	0.0× / 1
Other · Arabian Sea	0	31	1	39	— / 0
Structures · Arabian Sea	0	31	1	251	— / 0
Wrecks · Arctic Oceanlong running	0	31	1	585	— / 0
Cable ops · Barentsz Sea	0	31	1	192	0.0× / 0.2
Wrecks · Barentsz Sea	0	31	1	342	— / 0
Other · Bay of Bengal	0	31	1	36	— / 0
Wrecks · Bay of Bengal	0	31	1	231	— / 0
Surveys · Bering Sea	0	31	1	270	— / 0
Cable ops · Black Sea	0	31	1	180	0.0× / 0.2
Restricted · Black Sealong running	0	31	1	664	— / 0
Surveys · Black Sea	0	31	1	71	0.0× / 0.8

Cite: seahazards.com Sea Ledger, 2015-03, 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.