Make a Comment • Email Link • Send Letter to Editor IPFS News Link • Science, Medicine and Technology Ocean Engineering 10-27-2009 • arclein The engineering problem reduces to building stackable rings, each individually able to have neutral to positive buoyancy. This can be achieved by the expedient of oil filled bladders held in U shaped Watch Streaming Broadcast Live: LRN.fm Watch live shows and archives TV Live Chat Telegram Share this page with your friends on your favorite social network: