Thank you very much for your corrections. Here are some more sentences I'd like you to check.

1)Bassanio is in love with Portia, a girl famous for her beauty and her wealth, and is determined to marry her. He needs money to go to Belmont and court her. For this reason, he decides to borrow some money.
2)He asks his close friend Antonio, one of the wealthiest merchants in Venice, for three thousand ducats.
3)Unfortunately, all of Antonio’s money is invested in his ships, all currently out at sea.
4) Instead, Antonio tells Bassanio to get a loan and use his name as a guarantee.
5)He promises to sign the loan for him and repay it as soon as his ships come in. Bassanio approaches Shylock, a Jewish moneylender notorious for charging very high interest rates.

I see nothing wrong with any of the sentences, with the exception of #5. Try not to end sentences with a preposition, "...as his ships arrive."