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
Pontoon (card game) the rules. The computer-generated Pontoon basic strategy and house edge tables below are reproduced from "The Pro's Guide to Spanish 21 and Australian Pontoon", with permission of the author, Katarina Walker. Pontoon strategy is far more difficult than Blackjack, however, casinos do not generally object to people using strategy charts at the table. Pontoon strategy is very similar to Spanish 21 strategy, but there are some crucial differences, mainly due to the no-hole-card rule, and the limitations on soft doubling. Pontoon does, on average, have a lower house edge than its American counterparts because of the no-hole-card rule, which means