ship-towed long-range acoustic detection system

NOUN
47 LETTERS · STARTS WITH S

ship-towed long-range acoustic detection system is a valid 47-letter word worth 64 points in Scrabble and 74 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1H4I1P3-0T1O1W4E1D2L1O1N1G2-0R1A1N1G2E1A1C3O1U1S1T1I1C3D2E1T1E1C3T1I1O1N1S1Y4S1T1E1M3
1 + 4 + 1 + 3 + 0 + 1 + 1 + 4 + 1 + 2 + 0 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 2 + 1 + 0 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 3 + 0 + 2 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =64 PTS
DOUBLE WORD → 128TRIPLE WORD → 192
MEANING

What does ship-towed long-range acoustic detection system mean?

NOUN · 1 SENSE
1

A shipboard system consisting of an acoustic detection system that is towed behind the ship.