When wood or composite makes sense for a minesweeper

Are wooden-hulled minesweepers more effective than traditional steel ships?

It depends on the task: close-in sweeping and standing off as a mothership place different demands on the hull material.

Minesweepers have used wood, plastic, and steel hulls. The appropriate material depends on how close the vessel itself must go to the mines. A ship that stands off while other systems work close in has less reason to avoid steel. The design choice therefore depends on the balance between operating as the sweeper and serving as a mothership.