This question could be asking one of two things:
1) Traditional Arab Boats: If the question is asking about the name for the traditional boats used in the emirates along the Persian Gulf, like Kuwait, Qatar, Bahrain, and the United Arab Emirates, these are called dhow (داو) - pronounced "dao". Of course, like sailboats in the West, dhows are only used for recreational boating (especially tourism) or by local fisherman who cannot afford modern motorboats.
2) Arabic Word for Boat: The Arabic word that is used for a large ship (like a cruise ship, ferry, yacht, or commercial boat) is safina (سÙينة) and the word that is used for a private smaller boat (like a rowboat or a dhow) is a qaareb (قاربÙ).
they reached it by boat
Depending on where you are coming from: Walk Plane Boat Drive
The head of an Arab Tribe is called a Sheikh.
The Nomads who live in the Arab Deserts are called Bedouins.
There is no specific term for Muslims of Arab origin. They are usually just called "Arab Muslims".
The Arab Republic of Egypt
A harbour boat is of course called a harbour boat.
They were called the Bedouin.
the boat is called a waka
No, the back of a boat is called stern, bow is a front of a boat.
Back of a boat is called stern and Bow is the front of a boat.
They are from a so-called "Arab" man...the validity of this isn't high.