Watermine

Overview
The Watermine is a defensive Building that is used to deal massive damage to enemy Naval units upon contact.

Usage
A Watermine is a Building that costs $20. When an enemy Naval unit sails over the Watermine it explodes on contact, dealing a massive amount of damage to the enemy ship. The Watermine is a small flat circle facing down to the water (A sphere when viewed under water). It does not count as a Building and instead is considered its own type of unit. Each player can only have a maximum of 18 of either Water or Landmines at any one time in the Conquest gamemodes. Watermines can be used near Oil Rigs to protect them, if the enemy decides to attack the Oil Rig they may be in for an explosive surprise. Be careful about mine placement as they cannot be sold, making them unusable if placed in spots where no enemy Naval units travel through.

Strategies

 * Use Watermines when playing from a defensive position and lead enemy Ships into them to deal massive damage to their fleets. Following up a mine hit with a swift attack from an allied vessel can prevent the enemy ship from escaping and repairing.
 * Use fast vessels such as the Gunboat, Oil Ship or even the Hovercraft to manoeuvre around enemy ships and quickly place mines in their path if they are heading in a predictable direction.
 * Place Watermines in tight corridors and passageways where enemy ships are more likely to hit them.

Trivia

 * Players are allowed to place 40 mines in Free For All, 20 mines in Survival, but only 18 Water or Landmines in Conquest.
 * It takes 1 Watermine to destroy an Oil ship, 2 for Submarines, 3 for Destroyers, Transport ships and Gunboats, 4 for Battleships and 5 for Aircraft Carriers.
 * Watermines can be even be placed when allied air and space units are nearby, but not when enemy Units are within about the range of a Battleship