A keel-like device that is manually raised and lowered vertically without using a hinge.
A small crane used to hoist a boat or dinghy or other object.
To go sailing for a few hours on a small, open sailboat.
Small, open sailboat sometimes raced or short-distanced cruised, primarily used for recreational sailing.
Directly ahead of the bow.
Degrees of V-shape hull angle measured at the transom of planing powerboats.
Blunt-bowed power boat generally characterized by an open deck and generous passenger seating.
A hull shape characterized by a sharp deadrise, typically more than 20 degrees.
Electronic sonar device that displays water depth.
The amount of error from displaying magnetic north in a boat’s compass caused by the boat’s own magnetic interference.
differential GPS (DGPS)
A highly accurate global positioning system (GPS) that utilizes a differential radio beacon and receiver to compute and correct the error of all visible satellites sending data to a conventional GPS unit.
A small dining area usually consisting of a table and facing bench seats; it can often be converted into a berth.
A small sailboat often raced that can be sailed on and off a beach. Also a tender, either rowed or equipped with power, used to go to and from a larger vessel.
An engine configuration in which the drive shaft runs in a straight driveline through the bottom of the hull.
The weight of water displaced by a hull. Also, a type of hull that smoothly displaces water as opposed to riding on top of it.
A hull shape designed to run through water rather than on top of it in the manner of a planing hull.
A gunwale-mounted weighted line device used for deep-water trolling.
Vertical distance a boat penetrates the water.
A parachute-like sea anchor.
Weight of the boat without fuel and fresh water.
A type of boat with twin dashboards separated by a centerline walk-through deck leading to the bow.
Acronym for emergency positioning indicating radio beacon. When this electronic device is activated it transmits a radio signal with user registration data and positioning information to a network of satellites that assist the Coast Guard in conducting an emergency rescue.
A cruising boat without a deck-level salon. Sometimes called a sunbridge cruiser.
A cylindrical or round cushion used to protect the hull sides of a boat, typically used when tied up at dock.
To clear a buoy, point of land or object without having to make a tack.
Glass fibers either loose or woven, reinforced with resin and used in the construction of many boats.
A fix-mounted chair used to help land large gamefish on bluewater fishing boats equipped with a footrest, gimbal-mounted rod holder, safety harness and other fish-fighting gear.
A keel shaped like the fin of a fish that is shorter and deeper than a full-length keel.
Electronic device that uses sonar to locate and display fish on a monitor.
The position of a boat recorded in coordinates or bearings.
A pyrotechnic device used to indicate distress. Also, the outward curvature of the sides on the bow of a boat.
Type of boat or hull shape with very little or no deadrise.
Type of small, inshore saltwater fishing boat with moderate deadrise and draft, usually equipped with a raised platform aft used by a guide pushing a long pole to silently maneuver the boat through shallow tidal water.
Raised, second-story helm station, often located above the primary helm.
Wave pattern running in the same direction as the boat.
The bottom edge of a sail.
Located at the front of a boat.
Forward part of the main deck, ahead of the superstructure.
Jacket, pants and hat used during inclement weather.
A gasoline- or diesel-powered internal combustion engine that takes four cycles or strokes of the piston to complete its power phase. Also called four-stroke engine.
Hitch fastened to the frame of a tow vehicle.
Vertical distance between the waterline and the top of the hull side.
A sailboat designed primarily for speed and competition with a minimum of built-in creature comforts.
A fast sailboat designed with comfortable accommodations.
Electronic device using high frequency radio waves to detect objects and display their positions on a monitor.
Distance a boat can travel at cruising speed on a tank of fuel. Also, the distance to an object. Lastly, in intracoastal navigation, a set of two markers that, when lined up one behind the other, indicate the deepest part of the channel.
To sail across the wind.
Last warning given by a helmsman before tacking and turning the bow into the wind, notifying the crew that the boom and sail will cross the boat.
Part of a hitch that receives and holds the hitch bar or shank.
A hitch with a receiver from which a hitch bar or shank can be removed.
Liquid substance used in fiberglass composite construction that, when combined with a catalyst, bonds laminate materials together.
A chine that angles downward from the hull designed to direct spray out and awayfrom the boat.
RIB (rigid inflatable boat)
An inflatable boat fitted with a rigid bottom.
Wire cables, rods, lines, hardware and other equipment that support and control the mast and spars.
A device designed for a fishing boat that bolts to the cockpit floor or is incorporated into a bench seat, to hold mulitple fishing rods.
Device designed to safely and securely hold fishing rods either vertically or horizontally.
Line, chain, cable or any combination of these used to connect the anchor to the boat.
A fishing boat designed to run in coastal waters constructed of a simple, one-piece fiberglass hull without a top deck and characterized by rounded top edges without true gunwales.
A trailer outfitted with rollers instead of bunks.
Protective outer bumper that runs around the boat at the point where the top deck meets the hull.
Underwater fin mounted below the hull near the stern that controls boat steering.
A kind of small, lightweight, freshwater pleasurecraft intended for day use.
Required navigation lights that a vessel uses at night to indicate position and status.
Legally mandated chains that connect the trailer to the tow vehicle as a safety measure in case the coupler detaches.
A harness worn by a boater attached to the boat with a tether to reduce the chances of going overboard.
To slide or drift off course.
Arrangement of sails on a boat.
A boat that is at least partially propelled by capturing the force of wind in sails.
Full-sized, well-appointed cabin on the main deck level of a motoryacht, convertible or megayacht used for entertaining.
saltwater fishing boat
Any fishing boat used in the ocean or coastal waters that’s specially equipped to handle the harsh saltwater environment.
A large sailboat with two or more masts where the foremast is shorter than aft mainmast.
The ratio of anchor rode to vertical depth.
To run before the wind in bad weather.
Gravity fed drain in a boat to allow water to drain out and overboard.
To cut holes or open ports to purposely let water in to make a boat sink.
Gossip. So named after a water cask around which sailors used to gather and drink.
A canvas, cone-shaped device deployed to keep the bow headed into the wind to help safely ride out a storm. Also called a drogue.
Through-hull fitting with a valve between the interior and the exterior of the boat.
Ability to handle rough weather. Also called sea-kindly.
A type of large boat equipped with a salon and a raised helm or bridge.
Intentional degradation of GPS signal used for position fixing by the U.S. Department of Defense for purposes of national security. With selective availability turned on, positions can be fixed to about 300 meters. With selective availablity turned off, positions can be fixed to about 100 meters.
Drains water overboard automatically.
A hull shape with soft chines or a rounded bottom that enables the boat to achieve minimal planing characteristics.
Line of the deck or gunwale from bow to stern as viewed from outside the boat.
Line used to trim a sail.
Mast support rigging, usually a wire, that runs from the mast to the side of the boat.
A dash-panel unit affixed to the side of a boat. If only one, helm controls are affixed to it.
A fin or vertical projection below the hull that provides directional stability. Also, a fin-like projection at the bottom of an outboard.
A small, simple, shallow-draft boat.
Low profile, pleasure boats with minimal deadrise specifically designed for waterskiing and/or wakeboarding. These boats are usually characterized by an inboard engine and a towing pylon. Wakeboard boats are often equipped with a tower or extremely tall pylon to fasten the tow line in a manner to aid vertical jumping and water-ballast devices to increase the weight of the boat.
A boat berth between two piers or floats. Also, the slight loss of efficient power delivery as a propeller spins in the water.
A single-masted sailboat in which the mast is set forward of midships.
The deck floor.
A method to locate objects and determine distance by transmitting sound waves through water and measuring the time it takes the echo to bounce back. Used in depth finders and fishfinders.
Charted water depth.
Masts, booms, gaffs and poles used in sailboat rigging.
A type of bluewater fishing boat with at least two sleeping cabins and many dedicated fish-fighting features.
A docking line attached amidships to control fore and aft movement.
An order to crewmen to be ready, be prepared.
Maintain course and speed.
The shrouds and stays that support the mast but are not adjusted while working a boat.
The right side of the boat looking toward the bow.
A room with sleeping quarters, a cabin.
Distance of 5,280 feet, the standard measure of distance on land and most inland waterways.
Wire, rod or other rigging that runs fore and aft of the mast.
The most forward section of the hull.
Socket that holds the base of the mast.
A high-performance hull design with lateral notches, or steps, in the keel.
Aft portion of a boat.
Propulsion system composed of an inboard engine connected to a steerable drive unit extending through a cut-out in the transom.
To put an object away onboard a boat, to store.
Small linear protrusions that run longitudinally on both sides of the keel to give a planing hull lift and lateral stability.
Internal beams and braces that give a fiberglass hull structural support.
Hydraulic trailer brake system activated by the sudden inertia of a trailer pushing against the tow vehicle during a hard stop.
To fill a boat with water.
Side-to-side wandering of a trailer under tow.
A wide platform at the transom equipped with a ladder to help ease the effort of reboarding after going into the water.
Short, aluminum tower with overhead canvas to protect the helm.
The lower corner of a sail. Also, each leg of a zigzag course.
A fitting or object that goes all the way through a hull.
A bar connected to the rudder and used to steer the boat.
tiller handle outboard
A small, outboard motor that uses a handle fitted with engine controls to steer instead of a steering wheel.
Adjustable jack on the trailer tongue that raises and lowers the coupler.
The measurement of trailer weight when loaded with a boat on the hitch ball.
The hull above the waterline. Also, everything above deck as opposed to below deck.
Maximum weight a vehicle is rated to tow.
Forward portion of a trailer where the coupler is mounted.
Device that uses a crank and cable to assist in launching and retrieving a boat.
An electronic sensing device mounted in a boat’s bilge or at the bottom of the transom to provide data for a depth sounder.
The rear section of the hull connecting the two sides.
A plastic hose and shower head located near the transom that draws from a fresh water supply.
A pleasure boat more than 25 feet in length with a displacement hull.
The way a boat floats in relation to the horizon, bow up, bow down or even. Also, to adjust a boat’s horizontal running angle by directing the outboard or stern drive’s thrust up or down. Also, to set a sail in correct relation to the wind.
Hydraulically adjusted horizontal plates located on the bottom of the transom that control the trim angle of a boat at speed.
A type of boat with three side-by-side hulls, the center of which is usually larger with crew accommodations.
To fish by towing an array of baited lines or lures behind the boat.
Direction and velocity of wind as measured on land, distinct from apparent wind.
Tall aluminum tower used for spotting fish in the distance, often equipped with a second set of helm controls.
A gasoline- or diesel-powered internal combustion engine that takes two cycles or strokes of the piston to complete its power phase. Also called two-stroke engine.
Small pieces of zinc that attach to metal boat and engine components to help protect them from corrosion due to electrolysis, an effect caused when dissimilar metals are placed in a saltwater solution.