Abstract : The present report attempts to avoid all wishful thinking that tends to blind us to the true status of our war against the U-boats. Some measure of success is attained through the application of a simple relation between the percent of U-boats that are attacked, the percent of the attacks that result in kills and the percent of U-boats that must be destroyed to assure victory. The conclusion is reached that we are losing the present anti-submarine war by such a large margin that measures should be immediately taken to outline, codify, and put into action a more effective anti-submarine program. The report then presents a new anti-submarine procedure, based on this same relation between percents, for consideration as a part of the new program.