US Army Research Laboratory Aberdeen Proving Ground, United States
Three experiments were conducted to determine the ballistic effectiveness of water against a shaped charge jet. Water depths of 500, 1000 and 1500 mm were evaluated. The data suggest that water cannot be assigned one value to describe its ballistic efficiency against a shaped charge jet. Calculations show that 500 mm of water had an elemental mass efficiency em 3.9, 1000 mm of water had an em 2.6, and 1500 mm of water had an em 1.8.