Sea Ledger, February 2016

2016-02-01 to 2016-02-29 · archive

issued: 479
warning-days in force: 9,550
in force at month end: 312
sea × type cells: 223

baseline: same month, previous 5 years (2015-02, 2014-02, 2013-02, 2012-02, 2011-02)

By type

type	issued	warning-days	in force at end
Incidents	138	773.9	31
Exercises	84	1,085.8	33
Nav aids	46	2,699.6	89
Missiles	35	237.8	6
Icebergs	35	50.8	2
Cable ops	32	900.1	31
Derelicts	27	160.9	5
Quakes	24	76	2
Surveys	23	1,424.3	44
Other	11	434.1	11
Spills	11	164.1	7
Restricted	2	315.4	11
Wrecks	2	858.9	29
Piracy	2	25.5	0
Ordnance	2	51	2
Debris	2	7	0
Volcanic	1	99.6	4
Structures	1	98.9	3
Containers	1	4.7	0
War risk	0	58	2
Towing	0	23.8	0

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Incidents · South China Seasurge	27	112.5	9	28	2.1× / 13
Incidents · North Pacific Ocean	25	91.6	3	60	1.2× / 20.8
Icebergs · Labrador Sea	24	28	0	—	1.3× / 19
Exercises · North Pacific Ocean	23	139.2	3	45	1.8× / 13
Incidents · North Atlantic Ocean	18	63.7	5	59	1.5× / 12.2
Exercises · Yellow Sea	14	114.6	4	33	1.7× / 8.4
Nav aids · North Sea	13	146.8	6	195	1.0× / 13.2
Incidents · Mediterranean Sea - Eastern Basinsurge	12	97.3	1	32	2.9× / 4.2
Incidents · South Atlantic Oceansurge	10	74.6	3	29	2.2× / 4.6
Missiles · North Atlantic Oceansurge	10	34	2	33	2.1× / 4.8
Quakes · South Pacific Ocean	10	30	0	—	1.1× / 9.4
Exercises · Arabian Sea	9	90.4	3	33	1.5× / 6
Missiles · Black Seasurge	7	78.2	3	31	35× / 0.2
Cable ops · Mediterranean Sea - Eastern Basinsurge	7	71.7	4	72	3.2× / 2.2
Exercises · Black Sea	7	61.8	1	46	1.3× / 5.6
Missiles · North Pacific Ocean	6	37.2	0	—	1.1× / 5.2
Incidents · Coral Seasurge	6	24.8	1	53	2.0× / 3
Incidents · Philippine Seasurge	6	10.5	0	—	2.7× / 2.2
Derelicts · North Atlantic Oceanlong running	5	46.6	1	558	1.3× / 4
Incidents · South Pacific Ocean	5	24	2	57	0.8× / 6
Exercises · Mediterranean Sea - Eastern Basin	5	13.3	1	24	1.3× / 4
Icebergs · South Atlantic Oceansurge	5	12.4	1	27	2.1× / 2.4
Nav aids · South Atlantic Ocean	4	424.9	15	171	0.7× / 5.4
Cable ops · Bay of Bengalsurge	4	155.2	6	98	2.5× / 1.6
Surveys · Arabian Seasurge	4	95.1	2	60	5.0× / 0.8
Incidents · Caribbean Sea	4	79.4	2	60	1.7× / 2.4
Spills · Gulf of Mexico	4	57	3	41	1.1× / 3.6
Exercises · Philippine Sea	4	37.8	2	18	1.2× / 3.4
Exercises · Bay of Bengal	4	30.1	1	31	0.7× / 6.2
Incidents · Gulf of Mexico	4	25.6	0	—	1.7× / 2.4
Exercises · South Atlantic Ocean	4	24.8	1	17	1.5× / 2.6
Derelicts · Caribbean Seasurge	4	13.8	0	—	10× / 0.4
Missiles · Eastern China Seanew	4	4.7	0	—	new / 0
Icebergs · North Atlantic Oceansurge	4	4.4	1	4	20× / 0.2
Exercises · Aegean Sea	3	321.6	10	63	1.4× / 2.2
Surveys · North Atlantic Oceansurgelong running	3	196.8	5	636	2.5× / 1.2
Surveys · South Atlantic Ocean	3	125.8	5	179	0.5× / 5.6
Nav aids · Celtic Seasurgelong running	3	92.7	4	1,222	2.5× / 1.2
Cable ops · Arabian Sea	3	88	3	138	1.7× / 1.8
Cable ops · Caribbean Seasurge	3	48.1	2	44	15× / 0.2
Spills · North Atlantic Oceansurge	3	48	2	39	2.5× / 1.2
Cable ops · Andaman or Burma Seasurge	3	43.5	2	119	7.5× / 0.4
Cable ops · Indian Oceansurge	3	41.9	2	66	7.5× / 0.4
Nav aids · Gulf of Sueznew	3	40.8	1	27	new / 0
Incidents · Arabian Sea	3	31.4	0	—	1.3× / 2.4
Surveys · Mediterranean Sea - Eastern Basinsurge	3	23.6	1	19	7.5× / 0.4
Surveys · Bay of Bengalsurge	3	19.9	0	—	15× / 0.2
Missiles · Barentsz Seasurge	3	15.5	0	—	3.8× / 0.8
Incidents · Mozambique Channel	3	5.8	1	5	1.5× / 2
Nav aids · North Atlantic Oceanlong running	2	205.7	6	1,013	0.4× / 4.8
Nav aids · Gulf of Mexicolong running	2	171	5	744	1.3× / 1.6
Other · North Sealong running	2	97.8	2	885	2.0× / 1
Restricted · Sea of Azovnew	2	83.4	3	62	new / 0
Nav aids · Inner Seas off the West Coast of Scotland	2	66.5	2	236	0.6× / 3.4
Nav aids · North Pacific Oceanlong running	2	65.2	3	396	0.8× / 2.4
Exercises · South China Sea	2	58.2	2	30	0.8× / 2.6
Surveys · Laccadive Seanew	2	56.4	2	53	new / 0
Incidents · Mediterranean Sea - Western Basinnew	2	50.9	1	44	new / 0
Other · North Atlantic Oceanlong running	2	37.7	1	840	3.3× / 0.6
Derelicts · South Atlantic Ocean	2	35	1	60	1.0× / 2
Incidents · Laccadive Sea	2	34.7	1	27	0.9× / 2.2
Surveys · Mozambique Channel	2	29.3	2	54	10× / 0.2
Missiles · South Pacific Ocean	2	27.5	0	—	1.3× / 1.6
Exercises · Gulf of Mexico	2	26.8	0	—	0.8× / 2.4
Piracy · Gulf of Guinea	2	25.5	0	—	1.1× / 1.8
Cable ops · Strait of Gibraltarnew	2	21.2	1	21	new / 0
Nav aids · Tasman Sea	2	17.8	1	20	1.0× / 2
Incidents · Indian Ocean	2	17.5	1	26	0.3× / 5.8
Surveys · Aegean Seanew	2	16.5	0	—	new / 0
Quakes · Southern Ocean	2	8.7	0	—	2.0× / 1
Exercises · Baltic Sea	2	8.5	0	—	1.7× / 1.2
Nav aids · South Pacific Ocean	2	6.8	0	—	2.5× / 0.8
Cable ops · Irish Sea and St. George's Channel	2	6.7	1	26	2.5× / 0.8
Incidents · Davis Strait	2	6.2	0	—	5.0× / 0.4
Derelicts · Laccadive Seanew	2	6	0	—	new / 0
Derelicts · Philippine Sea	2	6	0	—	2.5× / 0.8
Icebergs · Southern Ocean	2	6	0	—	1.1× / 1.8
Incidents · Southern Ocean	2	6	0	—	10× / 0.2
Derelicts · Gulf of Mexico	2	5.1	2	4	10× / 0.2
Quakes · Indian Ocean	2	5.1	1	17	1.7× / 1.2
Exercises · South Pacific Ocean	2	5	0	—	0.4× / 4.8
Other · Mediterranean Sea - Eastern Basin	2	4.7	0	—	2.0× / 1
Exercises · Caribbean Sea	2	4.4	0	—	10× / 0.2
Derelicts · Indian Ocean	2	3.7	0	—	0.5× / 3.8
Derelicts · North Pacific Ocean	2	2	0	—	3.3× / 0.6
Nav aids · Caribbean Sealong running	1	321.5	10	749	1.3× / 0.8
Wrecks · Arabian Sealong running	1	145.3	6	882	0.7× / 1.4
Nav aids · Bay of Bengal	1	118.6	4	147	1.0× / 1
Nav aids · Coral Sealong running	1	115.6	3	682	0.2× / 4.2
Cable ops · Gulf of Mexico	1	103.2	4	234	0.7× / 1.4
Cable ops · South Atlantic Ocean	1	76.4	1	54	0.0× / 32.4
Nav aids · Bass Straitlong running	1	58.1	2	1,064	0.2× / 4.4
Nav aids · English Channel	1	58	2	48	0.3× / 3
Other · Caribbean Sealong running	1	48.4	2	405	new / 0
Wrecks · Celtic Sea	1	46.6	2	182	new / 0
Nav aids · Laccadive Sea	1	43.5	2	76	2.5× / 0.4
Volcanic · Philippine Sealong running	1	41.6	2	1,401	5.0× / 0.2
Structures · Persian Gulf	1	40.9	1	217	new / 0
Other · South China Sealong running	1	29.3	1	460	5.0× / 0.2
Cable ops · Sea of Azov	1	29	1	123	new / 0
Exercises · Laccadive Sea	1	28.9	1	31	0.6× / 1.8
Ordnance · Sea of Azov	1	21	1	21	new / 0
Spills · Caribbean Sea	1	17.1	1	17	5.0× / 0.2
Spills · Gulf of Alaska	1	14	1	14	2.5× / 0.4
Spills · North Pacific Ocean	1	14	0	—	1.3× / 0.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	1.3× / 0.8
Incidents · Solomon Sea	1	9.1	0	—	2.5× / 0.4
Nav aids · Mediterranean Sea - Western Basin	1	5.4	0	—	1.0× / 1
Missiles · Southern Ocean	1	5.1	0	—	1.7× / 0.6
Incidents · Japan Sea	1	5	1	5	2.5× / 0.4
Cable ops · South Pacific Ocean	1	4.9	0	—	0.8× / 1.2
Missiles · Laccadive Sea	1	4.6	0	—	1.0× / 1
Debris · North Atlantic Ocean	1	4	0	—	2.5× / 0.4
Cable ops · Celtic Sea	1	3.8	0	—	2.5× / 0.4
Nav aids · Strait of Gibraltar	1	3.3	0	—	new / 0
Derelicts · Bass Strait	1	3	0	—	5.0× / 0.2
Derelicts · Bay of Bengal	1	3	0	—	new / 0
Incidents · Bismarck Sea	1	3	0	—	1.0× / 1
Derelicts · Coral Sea	1	3	0	—	1.7× / 0.6
Quakes · Eastern China Sea	1	3	0	—	new / 0
Debris · English Channel	1	3	0	—	5.0× / 0.2
Quakes · Halmahera Sea	1	3	0	—	new / 0
Derelicts · Mediterranean Sea - Eastern Basin	1	3	0	—	5.0× / 0.2
Quakes · North Atlantic Ocean	1	3	0	—	1.3× / 0.8
Quakes · North Pacific Ocean	1	3	0	—	0.2× / 5.8
Containers · Persian Gulf	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	0.5× / 2
Quakes · Solomon Sea	1	3	0	—	0.7× / 1.4
Quakes · South Atlantic Ocean	1	3	0	—	0.8× / 1.2
Quakes · South China Sea	1	3	0	—	5.0× / 0.2
Quakes · Tasman Sea	1	3	0	—	new / 0
Missiles · Baffin Bay	1	2	0	—	new / 0
Other · Persian Gulf	1	2	0	—	5.0× / 0.2
Quakes · Celebes Sea	1	1.6	1	1	2.5× / 0.4
Derelicts · Bay of Biscay	1	1.4	0	—	new / 0
Nav aids · Gulf of Alaska	1	1.4	0	—	0.7× / 1.4
Ordnance · North Atlantic Ocean	1	1	0	—	new / 0
Other · South Pacific Ocean	1	0.7	0	—	new / 0
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	1	0.4	0	—	2.5× / 0.4
Nav aids · Bristol Channel	1	0.3	0	—	0.7× / 1.4
Derelicts · Tasman Sea	1	0.3	0	—	1.3× / 0.8
Incidents · Singapore Strait	1	0.2	0	—	new / 0
Incidents · Great Australian Bight	1	0.1	0	—	5.0× / 0.2
Other · Philippine Sea	1	0	0	—	new / 0
Surveys · Strait of Gibraltar	1	0	0	—	new / 0
Surveys · Beaufort Sealong running	0	232	8	2,028	— / 0
Surveys · Arctic Oceanlong running	0	174	6	1,953	0.0× / 0.2
Restricted · North Sealong running	0	174	6	1,439	0.0× / 0.2
Nav aids · Indian Oceanlong running	0	129.4	4	740	0.0× / 2.2
Surveys · Davis Strait	0	116	4	155	— / 0
Nav aids · Arabian Sea	0	87	3	308	— / 0
Exercises · Ionian Sea	0	87	3	58	0.0× / 0.2
Nav aids · Kara Sealong running	0	87	3	1,636	— / 0
Nav aids · Malacca Strait	0	87	3	291	— / 0
Wrecks · Solomon Sea	0	87	3	356	— / 0
Wrecks · South China Sealong running	0	87	3	658	0.0× / 0.4
Surveys · Indian Ocean	0	85.4	2	164	0.0× / 0.4
Surveys · Caribbean Sea	0	58	2	122	0.0× / 0.2
Wrecks · English Channel	0	58	2	181	0.0× / 0.2
Nav aids · Great Australian Bight	0	58	2	362	0.0× / 2.6
Wrecks · Irish Sea and St. George's Channel	0	58	2	255	0.0× / 0.2
War risk · Mediterranean Sea - Eastern Basinlong running	0	58	2	1,741	— / 0
Nav aids · Sea of Okhotsklong running	0	58	2	1,532	— / 0
Nav aids · Singapore Strait	0	58	2	291	— / 0
Surveys · The Northwestern Passageslong running	0	58	2	1,302	— / 0
Nav aids · South China Sea	0	54.9	0	—	— / 0
Surveys · Gulf of Mexico	0	51	1	161	0.0× / 0.2
Wrecks · Andaman or Burma Sea	0	50.8	1	151	— / 0
Other · Arabian Sea	0	45.4	0	—	0.0× / 0.4
Missiles · Aegean Sea	0	29	1	59	— / 0
Cable ops · Arafura Sea	0	29	1	64	0.0× / 0.2
Surveys · Bering Sea	0	29	1	238	— / 0
Other · Black Sea	0	29	1	57	— / 0
Restricted · Black Sealong running	0	29	1	999	— / 0
Volcanic · Caribbean Sea	0	29	1	221	— / 0
Wrecks · Caribbean Sealong running	0	29	1	503	— / 0
Other · Chukchi Sea	0	29	1	138	— / 0
Other · Coral Sea	0	29	1	320	0.0× / 0.6
Wrecks · East Siberian Sealong running	0	29	1	496	— / 0
Cable ops · Eastern China Sea	0	29	1	31	0.0× / 0.6
Volcanic · Eastern China Sea	0	29	1	276	— / 0
Wrecks · Gulf of California	0	29	1	124	— / 0
Wrecks · Gulf of Guinea	0	29	1	284	— / 0
Wrecks · Gulf of Mexico	0	29	1	329	— / 0
Other · Gulf of Suez	0	29	1	252	— / 0
Wrecks · Kara Sealong running	0	29	1	480	— / 0
Structures · Makassar Strait	0	29	1	139	— / 0
Wrecks · Makassar Straitlong running	0	29	1	589	— / 0
Wrecks · Malacca Strait	0	29	1	326	— / 0
Nav aids · Mediterranean Sea - Eastern Basinlong running	0	29	1	423	— / 0
Nav aids · Mozambique Channel	0	29	1	293	— / 0
Exercises · North Atlantic Ocean	0	29	1	32	0.0× / 3.2
Structures · North Atlantic Oceanlong running	0	29	1	923	0.0× / 0.2
Wrecks · North Atlantic Oceanlong running	0	29	1	558	— / 0
Ordnance · North Sea	0	29	1	174	0.0× / 0.2
Restricted · Norwegian Sea	0	29	1	273	— / 0
Cable ops · Persian Gulflong running	0	29	1	398	0.0× / 0.6
Surveys · Persian Gulf	0	29	1	45	0.0× / 0.2
Other · South Atlantic Oceanlong running	0	29	1	847	0.0× / 0.6
Derelicts · South Pacific Oceanlong running	0	29	1	1,342	0.0× / 1.4

Cite: seahazards.com Sea Ledger, 2016-02, 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.