it was explained what the vulnerability of the metal ship is and why the plastic one isn't vulnerable, but there was no explanation as to why the minesweeper ship is more dangerous to mines.,(reply>), Because when a minesweeper gets near enough to a mine to discover it, the mine can be removed, disarmed or detonated safely. The mines are "taken out" by the ship, instead of the ship being "taken out" by the mine as the mine layer intended.