Line 4: “Keel” has multiple meanings. The first is the part of the ship that goes along the underside that gives the ship stability in the water. This usage really doesn’t make much sense, though, because one can’t see a “steady keel” unless the boat has fallen over. The other use of keel here is as a synecdoche. The keel, a part of a boat, is used to represent the whole boat. More importantly, "the steady keel" lets us know that, despite its rough trip, the ship (like the nation) remains steadfast and true.
https://www.shmoop.com/o-captain-my-captain/ship-symbol.html
Explanation:
The narrator speaks to the reader, saying, "as you I will apprise." Then, two lines later, this context clue appears: "Before yet farther in this tale I place." This clue suggests that "apprise" is a verb that gives some information to the reader before too much time passes.
Answer:
Read below. This is based on personal experiences.
Explanation:
If someone insults another enough in their native language, it may eventually grow on the person and indirectly help the person further understand said foreign language.
It's effective to us because this happens many times in real life, for me as a Californian resident, I've experienced many times where people would curse at me or belittle me in Spanish, and I have a greater understanding of the language because of that. Since this is legitimate, that technically means it captivated the reader utilizing Ethos.