Lord Jim is a bit tedious, but I had to read it in college.
Years later, I reread it and found out how good a book it is. Conrad was so prolific, like Faulkner, that you should try some others, then come back to Lord Jim. Also, a very good movie was made of Lord Jim with James Mason and Peter O'toole. It might help if you watched it. Nostromo and The Secret Sharer are two good Conrad novels.
The Sea-Wolf is classic London, I've read it twice. Fenimore Cooper also wrote some sea stories set in our Revoltionary war. Try the Pilot, a tale about John Paul Jones.