PROBLEM TO BE SOLVED: To provide an amphibian motor car excellent in work property in a fixed state on-water, without overturn in turning or mud dredging work, and excellent in handling ability in use on a land and in on-water travel time.;SOLUTION: An amphibian motor car comprises: a center float (11) having a center block hole (12H); side floats (13) each of which is attached to each of right and left parts of the center float (11); two spuds (31) each of which is inserted into each of left and right rear block holes (13H) of the side floats (13); a maneuvering platform (21) fixed to an upper part of the center block hole (12H); a travel device (25) fixed to a lower part of the center block hole (12H); a movable dredging operator (5) attached to a front part of the maneuvering platform (21); and a thrust generator (4) provided on an outside part of each side float 13. On front and rear parts of each side float 13, float extension parts (131, 132) extended to rearward or forward, are integrally formed.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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