The Submarine Rescue Chamber and Trusting the Law of Physics

"Trust the Law of Physics."  That's what Master Diver Scully used to say to the Submarine Rescue Chamber (SRC) operators during his dive pre-brief.  The operators would dog (close and secure) and double check the two hatches were shut before the SRC left the surface to the disabled submarine.  A cable attached to the hatch from the disabled sub to a spooling wench in the lower compartment of the SRC would pull the SRC through the water column toward the sub.  The more the SRC descended into the depths of the sea, the greater the law of physics assisted in keeping the hatches shut.  The operators reported the SRC landing on the submarine.  Then, the operators induced the law of physics through a sequence of valve operations to attach the SRC to the disabled submarine.  A pressure differential between the surface atmosphere and the depth of seawater created a seal between the sub and SRC.  After dewatering and equalizing the lower compartment, it was time to open the lower hatch.  "OK, law of physics, don't let me down now." That's what I always thought every time I climbed down to the lower compartment, applied the holding rods, and opened up the disabled sub hatch.