Mine, in warfare, an explosive charge used as a weapon on land and at sea. It is a defensive weapon used to obstruct or delay enemy movements. On land, mines can complicate major troop and armor advances and inflict casualties on patrols and raiding parties. At sea, mines can be used to block the way to and from harbors and seas. They can also be used to harass shipping in any narrow body of water.
Rugged and simple, suitable for downing helicopters, disabling tanks or attacking buildings at close range -- in the hands of a skilled operator, the RPG is a lethal and versatile weapon.
Tugboat, or Tug, a boat with a powerful engine used to tow or push ships and barges.