use emarking in a sentence it means to go aboard a vessel, as at the start of a journey
There is no word "emarking." Please check the spelling. Then, look it up in a dictionary, like Dictionary.com. You'll see a couple of examples of how the word is used.
We'll be glad to check your sentence.
its embarking
That's correct. But I'm sure your teacher wants a longer sentence than two words. Remember, too, that a sentence begins with a capital letter and ends with a period.
oh i know that i was just correcting my spelling
What is your sentence?
Sure! Here's a sentence using the word "embarking":
"After bidding farewell to their loved ones, the passengers lined up at the dock, eagerly waiting to embark on their long-awaited cruise."
If you're looking to use the term "embarking" in the context of starting a journey on a vessel, such as a ship or boat, this example sentence illustrates that use.