Which design pattern is appropriate for “Sea Battle” game objects?

问题

The problems of my design are:

• I have to copy too many attributes from the interface
• Static field "count" doesn't work for each of successor.

The field should count for example how many mines are on the game field (approximate diagram).

I am sorry about mistakes. I am a novice and it is my first question here. Thank you for corrections and advices.

来源：https://stackoverflow.com/questions/25154849/which-design-pattern-is-appropriate-for-sea-battle-game-objects