A carnivorous aquatic mammal inhabiting mostly in the shallower seas of the continental shelves, famed for its intelligence and occasional willingness to approach humans
A mass of iron or lead hung from the yardarm, in readiness to be dropped on the deck of an enemy's vessel
In old ordnance, one of the handles above the trunnions by which the gun was lifted
A mooring buoy or a block of wood with a ring bolt at each end for vessels to ride buy
A move in which the swimmer, from a horizontal position on the surface, submerges headfirst and swims down and under, re-emerging at the original location
A move starting on the back, with a Front Somersault, landing again on the back; more commonly known as a "Bounce-Roll", and less commonly as a "Porpoise"