Abstract: An improved boat windshield mounting device which greatly reduces the time required to mount and install a windshield on a boat, skiff or the like in which the windshield sill frame members, both front and wing, are interlocked to a mounting strip which is fastened by screws to the deck of the vessel. The mounting strip includes an elongated, aluminum strip substantially L-shaped in which the smaller leg has a bulbous shaped flange disposed thereto with the smaller leg of the mounting strip being interlocked and received into a chamber in the windshield sill frame members, the chamber having a restricted opening which firmly couples and interlocks the sill frame members to the mounting strip. The mounting strip and the sill frame members are interlocked before the mounting strip is fastened by screws to the deck.