Pontoon effect Pontoon effect The pontoon effect refers to the tendency of a vessel whose flotation depends on lateral pontoons to capsize without warning when a lateral force is applied. The effect can be sudden and dramatic because pontoon boats usually cannot rely on the righting effect of a keel (which contains ballast). The vessel is stable and self-righting up to the point that the centre of gravity shifts past the centre of buoyancy of the ship and the vessel rapidly capsizes. The pontoon effect is theoretically possible whenever the vessel's entire weight exceeds the buoyancy of the pontoon(s) on either side.
Junk rig Chinese Junk hull. Among the ships used on the coast of China: Each of the traditional sailing rigs can be achieved using the modern junk sail. The junk sail is a low tech approach to sailing and requires only inexpensive components. Spars are typically of wood. Lines for running rigging are typically 3-strand cordage rather than dual core braid. The sailcloth materials are typically light canvas or tarpaulin, used Dacron from discarded sails, or even PVC sheeting. The junk sail is composed of the following components: The junk sail has essentially the same sides and corner names as the traditional