For a while the boat glided forward on its own momentum.

The boat glided until it rested dead in the water.

Perhaps they had stopped and the boat was only gliding forward under their previous impulse.

The white boat woke, and glided forward like a bird.

The boat glided forward again through sheets of light coming off the water.

A boat under sail was gliding past on the wind.

As they set off, their boat glided on the water, skimming the surface.

As the boat glided through the opening, the door closed behind them.

The boat glided to a stop in the water.

Now the boat was out at sea, but gliding smoothly on.