Give more context please kinda confused on what your looking for
Read this excerpt from Beowulf, in which Unferth, one of Hrothgar's warriors, addresses Beowulf. Art thou that Beowulf with Breca did struggle, On the wide sea-currents at swimming contended, Where to humor your pride the ocean ye tried, 'Twas mere folly that actuated you both to risk your lives on the ocean.
A good topic sentence is very clear, focused on the topic, directly relates the thesis, summarizes the main points of that paragraph, and strongly supports a claim.
Answer:
The author uses the comparison that Dr. Fermi was like a ship captain because He moved through dangerous territory taking readings of the progress.
Explanation:
Fermi worked on the creation of the first nuclear reactor and his experiment was the beginning of a nuclear age, then all the messages including information about the advances of his experiments and investigation where sent coded, and he was called in this messages, the Italian Navigator which is to say that he was the leader of the project or as it would be called the ship