Enter a clue or pattern or both:
The Clue
Signals at sea (7 letter answer)
The Answer
WIGWAGS
Tags
Notes
The answer WIGWAGS is so rare that it appears less than once every 2500 puzzles.
Definition
WIGWAG as a verb:
1. send a signal by waving a flag or a light according to a certain code
2. signal by or as if by a flag or light waved according to a code