In formal writing, the current convention is to italicize the name of a ship rather than underline it. Italicizing helps to differentiate the name of the ship from the surrounding text and gives it emphasis. This practice is consistent with the general rule of italicizing titles of larger works, such as books, newspapers, and films.
No.
No, unless you need to emphasize it.
No, it is no necessary to underline proper nouns in a regular or formative essay, unless used to exaggerate.
yes you do underline it because titles are called pronouns which so you do underline.
If you are writing it in an essay, than you would most likely italicize it: The Iliad, however, you can underline it, if you are writing by hand: The Iliad. That would be perfectly fine.
No.
No.
yes - or use italics
No, unless you need to emphasize it.
No, it is no necessary to underline proper nouns in a regular or formative essay, unless used to exaggerate.
No, it is not necessary to underline a scientific name even if it is completely written in capital letters. The proper format for writing a scientific name is to italicize it or underline it to indicate that it is a Latinized binomial name.
When you are writing about a tv show you do not underline TV show. You underline the official name for the tv show. You have to know the exact name for the show. TV show does not have to be underlined because its not proper like the real name. If I was writing about Jerry Springer i wouldn't underline "The TV show I am watching" I would undreline the show I am watching is called Jerry Springer.
yes you do underline it because titles are called pronouns which so you do underline.
No you don't, you can put the song title in quotations thought as a substitute.
No, you would italicize the name "Netflix" when writing it in a formal document or publication.
If you are writing by hand, then yes you underline it, but if you are typing, you need to italicize it.
That would not be the normal usage. The name is capitalized.