Dhow has a crew of 5 to 10 and oceangoing can be more than 30 meters long with lateen or triangular sail.
Dromond a sailed galley with two masts with triangular sail. Two steering oars and a platform for archers. Can hold several catapults. 50 rowers, 10 rigging sailors, 6 catapult operators, 20 crossbowmen or marines, 7 officers. Men of the Sea pg 34.
Knorr - flat bottomed, single mast with a square sail plus oars. half decks bore and aft. Crew 5 to 12.
Warsail deep keels and special rigging that allows 50% more speed when traveling upwind. Crew 10 to 15 sailors, 12 to 20 marines, 6 arbalest operators
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