Pontoon bridge in 638. The army of the Umayyad Caliphate built a pontoon bridge over the Bosporus in 717 during the Siege of Constantinople (717–718). The Carolingian army of Charlemagne constructed a portable pontoon bridge of anchored boats bound together and used it to cross the Danube during campaigns against the Avar Khaganate in the 790s. Charlemagne's army built two fortified pontoon bridges across the Elbe in 789 during a campaign against the Slavic Veleti. The German army of Otto the Great employed three pontoon bridges, made from pre-fabricated materials, to rapidly cross the Recknitz river at the Battle on the Raxa
Junk (ship) After their successful journey this junk was anchored as a tourist attraction at one end of Barcelona harbor, close to where La Rambla meets the sea. Permanently moored along with it was a reproduction of Columbus' caravel "Santa Maria" during the 1960s and part of the 1970s. In 1981, Christoph Swoboda had a 65 feet (LoA) "Bedar" built by the boatyard of Che Ali bin Ngah on Duyong island in the estuary of the Terengganu river on the East coast of Malaysia. The Bedar is one of the two types of Malay junk schooners traditionally built there. He sailed this