Next to the sign that says Lifeboat Station No. 14, there is a passageway and during the course of the film, the sign attached to the entrance to the passageway changes, sometimes saying Ship's Doctor, and sometimes Beauty Parlor.
At the start of the film when Sandy (Jayne Mansfield) is in the bubble-bath, she breaks the 4th Wall by glancing several times towards the camera when she is supposed to act as if she is alone.