The large mainsails differ from western style gaff rigs though, as they often do not have a boom and the sail is not lowered with the gaff. Instead it is reefed towards the mast, much like a curtain, thus allowing the gaff to be used as deck crane in the harbor. The lower part of the mast itself may resemble a tripod or is made of two poles. Pinisi may be 20 to 35 meters long and can weigh up to 350 tons. The masts may be as high as 30 meters above the deck.