The invention discloses a combined type roll-on roll-off
lightering ferry. The ferry comprises more than one beach climbing springboard, three rows of
buoyancy tank units, more than one pair of
mooring systems, more than one springboard lifting device, a pair of power propulsion systems and more than one
lightering springboard; the three rows of
buoyancy tank units include a ship bow section
buoyancy tank unit, an amidship section buoyancy tank unit and a
stern section buoyancy tank unit respectively; the bow section buoyancy tank unit, the amidship section buoyancy tank unit and the
stern section buoyancy tank unit are detachably connected in sequence in the longitudinal direction to form a ferry body; and the more than one
lightering springboards are hinged to the longitudinal middle position of the
stern section buoyancy tank unit; the more than one beach climbing springboards are hinged to the middle position of the longitudinal head end of the ship bow section buoyancy tank unit;the more than one pair of
mooring systems are arranged on each of the two transverse sides of the ferry body; the more than one springboard lifting devices are installed on the ferry body and are usedfor controlling the angles of the bottom of the beach climbing springboards and the lightering springboards relative to a
deck face of the ferry body; and the power propulsion systems are installed in the two transverse sides of the stern section buoyancy tank unit respectively and are used for self-propulsion.