Abstract
This is a report on the results of detailed experiments conducted to clarify: (1) the effect on ice floe control by the Sink-and Float-type Ice Boom (SFIB) and (2) the optimal sectional form of SFIB which may pervent SFIB from burying in sand when it is sunk.
SFIB has a structure with a number of floats connected to a steel wire which is tied to piers at both ends. When water is injected into the floats, the boom sinks. On the other hand, when air is injected into the floats, the boom floats to the water surface and prevents invasion of ice floes into the harbor.
