Question 2: For non-displacement craft such as hovercraft and ________, the vessel is suspended over the water by a cushion of high-pressure air it projects downwards against the surface of the water.
Question 4: The English modified their vessels to maximize their firepower and demonstrated the effectiveness of their doctrine, in 1588, by defeating the ________.
Question 5: With the development of the homing torpedo, better ________ systems, and nuclear propulsion, submarines also became able to effectively hunt each other.