Abeam: Off the boat at right angles to the center line.
A drift: Unattached to shore or bottom, floating out of control.
Aft: Near or toward the stern.
A ground: Touching or stuck on the bottom.
Ahead: 1. The direction towards the bow of the boat relative to the observer. 2. In front of the boat. 3. Moving in a forward direction.
Aids to navigation: Charted objects used to assist in determining position, safe course, or to warn of dangers (e.g., buoys, beacons).
All around light: A light showing an uninterrupted arc of 360° on the horizon.
Mid shift: In or near the middle of the boat.
Anchor: Device used to secure a boat to the bottom of a body of water.
Anchorage: Suitable or designated place where boats anchor.
Astern: 1. Direction toward the stern relative to the observer. 2. Behind a boat. 3. Moving in reverse.
Automatic Information System (AIS): An automatic tracking system used for collision avoidance on vessels.
Bail to remove water by scooping it out with a bucket
Beacon Anything that serves as a signal or indication for guidance or warning. A fixed non-floating aid to navigation
Beam 1 Maximum width of the boat 2.A horizontal athwartship support of the deck
Bearing 1 horizontal direction of an object from an observer, expressed as an angle from a reference direction, (example, compass bearing, true bearing, relative bearing) 2. a device for supporting a rotating shaft with minimum friction. May take the form of a metal sleeve (a bushing)a set of balls (ball bearing), or a set of pins around a shaft (a roller or needle bearing)
Berths, a bed or a place for mowing your boat in a harbor or port
Below Beneath the deck
Bend to make faster sale to a spa or stay or A not to secure a line to another line or object
Bilge lowest part of a boat
Boulder fatigue, exposure to noise, vibration, sun, glare, wind, and other motion on the water produces voters fatigue. Your action time is affected, almost as much as if you were legally drunk.
Boom, a horizontal spa used to hold the bottom of a
Bow forward, end of a boat
Bow line align used at the bow of a vessel
Bowline not used to form an eye or loop in the end of a line (pronounced “bo-lin”)
Braided rope rope fibers are interwoven and clockwise and counterclockwise directions along the length of the line braided rope generally has two parts, a hard, strong core and one or more braided layers
Bridge clearance, vertical clearance under a bridge at mean high water
Bridge communications used for lane shipped to ship navigation communication between large commercial vessels and do not normally involve recreational voters
Bridal a length of line or wire rope with both end secured or a secure loop to the middle of which another line is attached
Broach turn a boat broadside to wind, or wave subjecting it to possible capsizing
Buoy anchored floating device used as an aid to navigation. May carry a light, horn, whistle, bell, gong, or combination for identification. Also may be used to mark a Maureen.
Buoyancy the upward force exerted by a fluid on a body or object in that fluid the upward force that keeps a boat floating