Wiktionary
minehunter
n. A naval vessel that actively detects and destroys individual mines.
Wikipedia
Minehunter
A minehunter is a naval vessel that actively detects and destroys individual naval mines. Minesweepers, on the other hand, clear mined areas as a whole, without prior detection of mines. A vessel that combines both of these roles is known as a mine countermeasures vessel (MCMV).