Navigational warnings, week 2012-W50

2012-12-10 to 2012-12-16 UTC

issued: 164
cancelled: 185
in force at end: 297
of these still in force: 0

What this reporting period contains

164 messages have issue dates in this period, and 185 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Exercises accounts for 27 of 164 recorded messages (16%), the largest category group in this selection.

HYDROPAC accounts for 91 of 164 recorded messages (55%), the largest source series group in this selection.

Separate updates to the same activity count as separate messages. The original records below show what was reported and when.

Issued · by type

Exercises	27
Incidents	26
Other	22
Cable ops	20
Nav aids	17
Missiles	14
Icebergs	10
Quakes	7
Surveys	4
Containers	3
Derelicts	3
Piracy	3
Wrecks	2
Ordnance	2
Debris	2
Towing	1
Storms	1

Issued · by sea

South Atlantic Ocean	17
North Pacific Ocean	14
North Sea	9
North Atlantic Ocean	8
Indian Ocean	7
Labrador Sea	7
South Pacific Ocean	6
Bay of Bengal	5

HYDROPAC 91 · HYDROLANT 53 · NAVAREA IV 11 · USGS earthquakes 7 · NAVAREA XII 1 · HYDROARC 1

Issued · 164

Cancelled · 185

Not for navigation. Counts include only warnings we display; ongoing search-and-rescue traffic is excluded until 30 days after it closes.