Navigational warnings on 2017-04-21

UTC day · today

issued
36
cancelled
56
in force at end
383
of these still in force
0

What this reporting period contains

36 messages have issue dates in this period, and 56 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 13 of 36 recorded messages (36%), the largest category group in this selection.

HYDROPAC accounts for 18 of 36 recorded messages (50%), 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

Exercises13
Other8
Surveys3
Missiles3
Incidents2
Icebergs2
Spills1
Derelicts1
Wrecks1
Nav aids1
Piracy1

Issued · by sea

North Pacific Ocean4
Arabian Sea4
Yellow Sea2
North Atlantic Ocean2
Black Sea1
Indian Ocean1
Gulf of Mexico1
South China Sea1

HYDROPAC 18 · HYDROLANT 10 · NAVAREA IV 3 · NAVAREA XII 2 · HYDROARC 2 · NOAA IncidentNews 1

Issued · 36

Cancelled · 56

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

Navigational warnings on 2017-04-21 · seahazards