Navigational warnings on 2017-04-30

UTC day · today

issued
28
cancelled
21
in force at end
400
of these still in force
0

What this reporting period contains

28 messages have issue dates in this period, and 21 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 8 of 28 recorded messages (29%), the largest category group in this selection.

HYDROLANT, HYDROPAC tie for the largest recorded count, with 11 messages each.

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

Issued · by type

Exercises8
Incidents5
Surveys4
Missiles3
Icebergs2
Wrecks2
Other2
Derelicts1
Volcanic1

Issued · by sea

Black Sea4
North Pacific Ocean3
North Atlantic Ocean3
Norwegian Sea2
South China Sea2
South Atlantic Ocean2
Philippine Sea2
South Pacific Ocean2

HYDROLANT 11 · HYDROPAC 11 · NAVAREA IV 4 · NAVAREA XII 1 · HYDROARC 1

Issued · 28

Cancelled · 21

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 2017-04-30 · seahazards