PURPOSE: To obtain a connecting structure having a quite simple constitution including a projection-recess fitting, the attached conditions of the connecting structure being excellently stabilized.

CONSTITUTION: In a partion wall of a hull are provided holes in each of which is fitted a resilient member having a flange and a boss 82, and the resilient member is forced in place by attaching surface plate 85 to the partition wall 6 using bolts 88. The resilient member and the surface plate 85 have holes passing both of them and a recess 83. On the other hand, to a worktop 3 of a table are provided projections 7. With the worktop 3 slightly slanted as shown in phantom the projections 7 will be inserted from the holes of the surface plates 85 through the recessed 83 of the resilient members, and then the worktop 3 is positioned horizontally as shown in solid line to obtain the stabilized attached conditions.