Junk rig to" in the junk rigged yacht is simple. Simply luff the boat into the wind with the sails close hauled and then put the helm down when the forward speed is spent. The battens will tame the luffing sails. Heaving to in severe weather is done by dropping the forward junk sails into their cradle and reefing the aft junk rigged sails—both tasks that are simplified by the junk rig. Heaving to in light winds can be difficult due to the lack of sail drive up wind. Annie Hill sailed a junk rigged dory and wrote of its virtues in
Pontoon bridge remain in place much longer. Hobart Bridge, a long pontoon bridge built 1943 in Hobart, was only replaced after 21 years. The fourth Galata Bridge that spans the Golden Horn in Istanbul, Turkey was built in 1912 and operated for 80 years. Provisional and lightweight pontoon bridge are easily damaged. The bridge can be dislodged or inundated when the load limit of the bridge is exceeded. The bridge can be induced to sway or oscillate in a hazardous manner from the swell, from a storm, a flood or a fast moving load. Ice or floating objects (flotsam) can accumulate on