Of a boat, to move through water while supported by hydroplanes (3) (see hydroplane 3, above).
2.
To move through a body of water supported by the hydrodynamic forces on a surface, similar in principle to a hydroplane 3; said, e..g, of automobiles skidding on a shallow patch of water on a road when moving at high speed, thus causing the tires to lose contact with the road surface.
... Z99. You know the first submarines, abroad at least, were sometimes called Al, A2, A3, and so on. They were of the diving, plunging type, that is, they submerged on an inclined keel, nose down, like the Hollands. Then came the B type, in which the hydroplane appeared; the C type, in which it was more prominent, and a D type, where submergence is on a perfectly even keel, somewhat like our Lakes. Well, this boat of mine is a last word— the Z99. Call it the ... — The Dream Doctor • Arthur B. Reeve
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