I look down on where the old Clydebank shipyard used to be, and can't really believe that the classic Queen liners were launched from such a restricted site into such a narow river, and then sailed along it out to sea.
The slipways at John Brown's where the Queens were built were angled so that they pointed up the mouth of the River Cart on the opposite side of the Clyde. You can see them on Google Earth if you go back to the 1945 imagery.