In the East, Arab traders would stop at Melaka to exchange goods, replenish supplies, spread Islam, wait for the southwest monsoon winds to ferry their boums for 2,500km to China.
An Arab boum under full sail, showing the stern rudder and cargo hold beneath the deck. The small below deck was dreadful, because the ship's planks were scrubbed regularly with vegetable oil.
The side view of a typical Arab ship shows the triangular lateen sail, the jib supported by the bowsprit, and the sharp 'rake', or slant, of the mast.
The sharply angled posts at the bow and stern stand out in this 13th century of an Arab ship. Notice the efficient-looking four-pronged anchor hanging from the bow.