Atlantic Sentinels is a solitaire, tactical level game placing you as the Senior Officer of the Escort, shepherding a convoy in the North Atlantic from the attacks of U-boats, both singly and in wolfpacks. You are in command of a convoy escort group, composed typically of 4-10 escort vessels guarding a convoy on its way across the Atlantic. Your mission is to protect as much Allied shipping as possible while simultaneously destroying as many U-boats as possible during the height of the U-boat threat -- 1942 to early 1943.