Sub system
Crossword clue · 1 known answers · 2 appearances · Last seen in the Thomas Joseph crossword on August 29, 2026
Latest answer · Verified
SONAR
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About this clue
The clue “Sub system” has appeared 2 times in our database with 1 different answers, so count the squares in your grid and check the crossings before you commit. Most recently it ran in the Thomas Joseph crossword on August 29, 2026, where the answer was SONAR.
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Underwater detector
Navigation aid
Underwater detection device
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