1.   The caulk will cushion the glass against the sash and provide a watertight barrier against outside moisture.

2.   The caulk will create a watertight barrier that will keep rain out.

3.   It also said the vehicle ramp, which folded up inside the hull to make a watertight barrier, apparently was out of alignment.

4.   It also said the vehicle ramp, which folded up inside the hull to make a theoretically watertight barrier, apparently was out of alignment.