gunboat system

14 LETTERS · STARTS WITH G

gunboat system is a valid 14-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2U1N1B3O1A1T1S1Y4S1T1E1M3

2 + 1 + 1 + 3 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does gunboat system mean?