Semi-menstrual Inequality. Tidal inequality that goes through all its variations in half a lunar month.
Sennit. Plaited yarns, strands, or ropes.
Senhouse Slip.Strong slip, secured to framing of ship in chain locker, to hold inboard end of cable. Tumbler is shaped to pass through open link of cable and form a snug fitting for link. Gives maximum strength when cable is veered to a clinch. Allows instant release when required. Connection between ship and slip is by chain of such length that cable can be slipped from deck immediately above chain locker.