Abeam

The position or direction at right angles to the centreline or keel of a vessel, typically on either side of the boat.

Abeam describes something located directly to the side of a vessel at a 90-degree angle from the centreline or keel. This position is neither forward nor aft but on the boat’s port (left) or starboard (right) side. When something is said to be “abeam,” it is aligned with the widest part of the vessel, which is the beam. For example, if a buoy or another vessel is “abeam,” it means it is directly to the side of your boat, not ahead or behind.

Understanding the term “abeam” is crucial for navigation and communication on the water. It helps mariners give precise information about the location of objects or hazards relative to their vessel. For instance, if a crew member spots another boat “abeam to port,” the captain knows to look directly to the vessel’s left side. Similarly, in situations where wind or current direction is important, knowing something is “abeam” can help decide course adjustments or sail trimming.