Trimaran sailplan. They contribute to drag when heavily immersed, and their level of immersion indicates when to reef. Two types of trimaran exist: the regular trimaran and the open trimaran, which features a trampoline between the hulls instead of plating. Trimarans have a number of advantages over comparable monohulls (conventional, single-hulled sailboats). Given two boats of the same length, the trimaran has a shallower draft, a wider beam, less wetted area, and is able to fly more sail area. In addition, because of the righting moment provided by the wide beam, trimarans do not need the weighted keel that is required
Luzzu while at sea. On 30 October 1948, a luzzu that was being used as a Gozo ferry capsized and sunk off Ħondoq ir-Rummien, Gozo. 23 people were killed. The town of Marsaxlokk is especially famous for the large numbers of luzzu and similar craft operating in its harbour. The luzzu is often considered as a symbol of Malta. Some luzzi have been converted to passenger carriers for tourists although the vast majority continue to be used as fishing vessels. A "kajjik" is similar in appearance and function to the luzzu, but has a square transom instead of a double-ended hull.