Navigational warnings on 2015-12-31

UTC day · today

issued: 33
cancelled: 42
in force at end: 354
of these still in force: 0

What this reporting period contains

33 messages have issue dates in this period, and 42 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Incidents accounts for 8 of 33 recorded messages (24%), the largest category group in this selection.

HYDROLANT accounts for 18 of 33 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

Incidents	8
Exercises	7
Other	7
Surveys	4
Debris	2
Nav aids	1
Quakes	1
Derelicts	1
Cable ops	1
Icebergs	1

Issued · by sea

Aegean Sea	3
South Atlantic Ocean	3
North Pacific Ocean	2
Celtic Sea	2
Tasman Sea	2
Arabian Sea	2
Philippine Sea	2
North Atlantic Ocean	2

HYDROLANT 18 · HYDROPAC 11 · NAVAREA IV 2 · HYDROARC 1 · USGS earthquakes 1

Issued · 33

Cancelled · 42

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