A buoy is a marine navigational aid that floats atop the water. They can come in a broad range of shapes and sizes, such as cones, short cans, tall cylindrical spars, pillars, and more. Despite this, in North America, cones and cans are the most common types. Beacons function identically to buoys, but rather than floating on the water, are fixed to the sea floor. Unlike buoys, beacons do not typically vary in shape. Though the long poles that keep the beacon upright do not allow for much variation, they make it easier to add lights or signage to the structure. For example, depth and speed limit signs are commonly attached to beacons. In this blog, we will cover the main types of buoys, beacons, and lights.