Look at that boat wallow in the trough.

Jupiter! There she goes over--nearly!" All four young people on the float held their breath for an instant.

The motor launch, after almost having turned turtle, righted itself.
"I wish I were at the wheel of the boat for about three minutes," muttered Darrin hoarsely.
At that moment Laura and Belle both screamed, while Dan Dalzell shouted: "There she goes--for sure, this time!" A bigger wave than usual had half filled the launch and caused it to careen.

Before the little craft could right itself a second and a third wave, rolling along, had completed the work.

The launch had sunk!.