so some days later i lose a match because i was out of ammo i just run and trow some mines trought the map( at the end i finish the match with only 10 mines), and i forget DD's can sweep mines... but in real life DD's can sunk because mines ._.) okay its a game but mines need to hit them :V SDE put something like it: 
1- DD's cant sweep mines at speed over 15 knts or at 1/3 speed
2- Great speed = Great damage
3- #MakeMinesGreatAgain