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
Junk raft 28 August 2008. On the way, they gave valuable water to record-holding ocean rower Roz Savage, also on an environmental awareness voyage, when her supplies dwindled. The construction of the JUNK Raft began in April 2008 and was finished the following month. The huge undertaking of constructing a seaworthy raft from "junk" was aided by volunteers from the environmental education programs of: Bell Elementary, Green Ambassadors, Muse Elementary, Santa Monica High School, and Westbridge School for Girls. The volunteers lent a hand by cleaning bottles, fastening bottle caps, and stuffing them into the recycled fisherman's net pontoon forms.<ref name="junkraft.blogspot.com/2008/04"></ref> Junk