To provide a sectional boat which is suitable for a metal ship having a deck board, and which can be assembled and disassembled easily and rapidly.

The sectional boat includes a front hull 1 and a rear hull 2. The front hull 1 includes front coamings 7a, 7b projected on an upper surface of the deck board 5, and front skegs 5a, 5b projected on right and left parts of a ship bottom part 4b. The rear hull 2 includes rear coamings 18a, 18b projected on right and left parts of an upper surface of the deck board 15, and rear skegs 16a1, 16b1 projected on right and left parts of the ship bottom part 14b. In an assembled state, the front coamings 7a, 7b and the rear coamings 18a, 18b are coupled and the front skegs 5a, 5b and the rear skegs 16a1, 16b1 are coupled. In any of these couplings, components corresponding longitudinally on the respective right and left sides are coupled through coupling plates 27a, 27b, 29a, and a screw implement.