This is my take at a simple naval moored mine. Just add it to your creations and lay some mines!
This is how it works:
First you enter the desired depth in the small keypad.
By either launching the mine using the provided fixture or by activating the "Arm" keyswitch the bottom magalls on the anchor are activated.
The mine will now sink to the bottom of the sea, where the magalls will connect to the floor.
Shortly after the mine will now be freed and start to rise.
The winch will extend it to the depth which was put in to the keypad.
Simultaniously the mine itself will be armed 10 seconds after being released.
The mine is equipped with an impact sensor and will detonate once the threshold of 1m/s is surpassed.
According to the hague conventions of 1899 and 1907 the mine will not detonate if it's detached from its anchor.
Maximum depth is 40m because the winch can only extend that much.
