Complex sentence: The mine is waterproof and can be laid in water up to 1.2 meters deep, additionally the mine is shock resistant and can be laid as close as two meters apart without causing sympathetic detonation.
Split into simpler sentences: The mine is waterproof and can be laid in water up to 1.2 meters deep. It is shock-resistant and can be laid as close as two meters apart without causing sympathetic detonation.