Concerning Ukibashi (Floating Bridge)

This is a device for a time when you need to cross the moat surrounding a castle, or a water obstacle in haste. Attach [two] ropes in a parallel manner and float them on the water surface. Since it has to be an easy task, use big bamboos to connect the ropes. The ropes to which the bamboos are connected should be thick. Refer to the drawing for details.
(The interval is one or one and half ken)