sewage/sewer, solid and liquid waste, shackle, device to restrain movement, signal flare, bright light used in distress, sinus, air space within the skull connected to the nasal passage, slack, a portion of line that hangs loosely, snorkel, a tube used for breathing under water, sonar, system using transmitted and reflected underwater sound waves, squeeze, pain or discomfort in an enclosed space, stage, platform to put divers in and take them out of the water, standby diver, backup in case of emergency, submerge/submersible, cause to be underwater/able to be underwater.

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