Deck 2014: General Navigation

1. A The warning was issued in 1986, the 87th sequentially numbered warning and broadcast 11 times.
2. B This is warning number 1986 issued in 1987, and it affects sub-region 11.
3. C This warning is valid in 1986 and 1987 and is the eleventh  two-year warning.
4. D The subject of this warning first appeared in 1986; this warning is in 1987 and is the eleventh on this topic.

Tip: press A-D to answer