Answer: The phrase "burly warships" typically refers to large and heavily built military vessels that are designed for combat or other military operations. The word "burly" suggests that these warships are robust, sturdy, and strong, with a significant physical presence. These types of ships are often used by naval forces to project military power, protect trade routes, and support operations on land. Examples of burly warships include battleships, aircraft carriers, and destroyers.
Explanation: In the context of this passage, "burly warships" refers to large and powerful military vessels that can be used to demonstrate a country's strength and determination in the Pacific. The passage suggests that the United States did not have many of these types of ships to show, as they had recently departed the area. Instead, the US attempted to partially replace the ships with twenty-one B-17 bombers. The passage also mentions that the US had imposed restrictions on exports to Japan, including machinery and vegetable fibers, but had not yet implemented an oil embargo due to concerns about the potential risks involved.