A watercraft includes a deck, a pontoon assembly, and a propulsion system. The pontoon assembly supports the deck, and includes a supporting structure connected to the deck, a center pontoon, a port pontoon and a starboard pontoon. The center pontoon is connected to the deck by the supporting structure. The port and starboard pontoons are connected to the deck, and are disposed to left and right of the center pontoon respectively. The propulsion system includes a battery, an electric motor and a propulsion unit. The battery is mounted on the supporting structure, and is disposed vertically between a lower surface of the deck and an upper surface of the center pontoon. The electric motor is electrically connected to and powered by the battery and is supported by at least one of the pontoon assembly or the deck. The propulsion unit is operatively connected to the electric motor.

A watercraft includes a deck, a pontoon assembly, and a propulsion system. The pontoon assembly supports the deck, and includes a supporting structure connected to the deck, a center pontoon, a port pontoon and a starboard pontoon. The center pontoon is connected to the deck by the supporting structure. The port and starboard pontoons are connected to the deck, and are disposed to left and right of the center pontoon respectively. The propulsion system includes a battery, an electric motor and a propulsion unit. The battery is mounted on the supporting structure, and is disposed vertically between a lower surface of the deck and an upper surface of the center pontoon. The electric motor is electrically connected to and powered by the battery and is supported by at least one of the pontoon assembly or the deck. The propulsion unit is operatively connected to the electric motor.