Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: To answer the question, consider the following: A PT boat (short for Patrol Torpedo boat) was a torpedo-armed fast attack craft used by the United States Navy in World War II.
 The question and answer:
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A PT boat (short for Patrol Torpedo boat) was a torpedo-armed fast attack craft used by the United States Navy in World War II. It was small, fast, and inexpensive to build, valued for its maneuverability and speed but hampered at the beginning of the war by ineffective torpedoes, limited armament, and comparatively fragile construction that limited some of the variants to coastal waters.

Based on this passage, what does the pt stand for in pt boat?
The answer is Patrol Torpedo
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