Which of the following is a method to keep a vessel in place?

Setting an anchor is a method used to keep a vessel in place, and it is particularly effective in calm waters or when stationary. An anchor works by being deployed to the seabed, where it digs in and relies on the weight and design of the anchor to hold the vessel in position against wind, current, or wave activity. This allows boaters to remain in a specific spot, whether for fishing, swimming, or waiting for other boats.

In contrast, using a motor is more about propulsion and maneuverability, rather than maintaining a stationary position. Drifting with the current inherently involves moving along with the water flow, which does not keep the vessel in one place. Using a sail relies on wind to move the boat forward, which also does not provide the stability of remaining in a fixed location. Therefore, setting an anchor is the most reliable and widely used method among boaters for keeping a vessel stationary.