This invention relates to certain cyclic amine derivatives of Formula . These scan chains have input terminals for receiving test patterns, and outputs provided to compression logic such as a distributed XOR tree multiple input shift register to provide an output which is a compressed signal derived from the output test patterns. A flow guide part, the impeller, an exhaust part, and the pump rear cover mounted on the opening of the outer cylinder are coaxially arranged upwards in turn from the opening of the inner cylinder. The lift sections are raised upwardly to carry the boat from the water and to another location over a land surface.