WATERLINE: A line painted on a hull which shows the point to which a boat sinks when it is properly trimmed (see BOOT TOP).
WAY: Movement of a vessel through the water such as headway, sternway or leeway.
waterline length - The length of the boat at the waterline.
waterline - The line where the water comes to on the hull of a boat.
waterline
The intersection of the hull and the surface of the water.
waypoint
The coordinates of a specific location.
Waterline is an imaginary line circumscribing the hull that matches the surface of the water when the hull is not moving.
Waterline - how high up the water reaches when the ship is in the water
Waterline - any of several lines that are marked upon the outside of a ship and correspond with the surface of the water when it is afloat on an even keel ...
Waterline
The imaginary line drawn on the hull by the water's surface where a boat settles when loaded normally.
Way ...
Load Waterline: LWL; the planned waterline of a boat, to which it is expected to float when fully loaded and equipped.
Locker: A storage place, a closet.
load waterline - The vessel's expected waterline when it is fully equipped and loaded with gear. See also "waterline."
locker - A closet; A storage place or container.
lob sided - Larger or heavier on one side than on the other.
Deep Waterline:
The line to which a vessel is submerged with a full cargo on board.
Deliver a broadside:
A broadside was the simultaneous firing of the guns and /or canons on one side of a war ship.
design waterline (DWL)
Also length waterline or load waterline (LWL) - The length of the boat where it meets the water when loaded to its designed capacity.
deviation ...
W
top
Waterline- The theoretical line on the hull where the boat meets the water.
Weather helm- A tendency to head into the wind.
waterline
The boat at the water's surface. Also the horizontal line between the points at the bow and stern where the water surface touches the hull. Compare with boottop. Waterline length (LWL), see length.
waterlogged ...
WATERLINE-The line painted on a boat's side indicating the proper trim.
WEATHER HELM-A sailboat in which the tiller must be pulled (usually only slightly) toward the wind to keep it on course.
WEATHER SIDE-Windward side of a sailboat.
Load waterline -- The line of flotation when a vessel is properly ballasted or laden.
Luff -- To come closer to the wind.
Make fast -- To belay a rope.
WATERLINE LENGTH-Significance: One of the factors used to determine the speed potential of a displacement boat. The longer, the greater the speed potential.
Motor too close to waterline; vessel will nose dive.
Motor too far from waterline; vessel will tend to tap surface.
Motor is at a right angle to the water surface; operation should be smooth if the vessel was properly loaded.
BOOT TOP: A painted line that indicates the designed waterline.
BOW: The forward part of a boat.
BOW LINE: A docking line leading from the bow.
BOWLINE: A knot used to form a temporary loop in the end of a line.
It is a cast fitting or a built-up structure located below the waterline of the vessel and having means for attachment of the piping. Suction sea chests are fitted with strainers or gratings.
34 times the length of a boat at its waterline. Since most monohull sailboats cannot exceed their hull speed, longer boats are faster. Displacement The weight of a boat measured as a the weight of the amount of water it displaces.
Boot top A stripe near the waterline.
Bowsprit A short spar extending forward from the bow. Normally used to anchor the forestay.
Bridge deck The transverse partition between the cockpit and the cabin.
Bilge- The lowest part of the interior hull below the waterline
Bilge Pump-A mechanical, electrical, or manually operated pump used to remove water from the bilge.
FREEBOARD - Vertical distance from the lowest part of the deck (or flow-through point in transom) to waterline.
GAFF - Spar which supports the upper side of a fore-and-aft four-sided sail. Also, long-handed hook to bring fish aboard.
seacock: a shutoff valve attached to through-hull pipes a shutoff valve attached to through-hull fittings near or below the waterline. seat locker: a storage locker located under a cockpit seat.
Displacement Volume (V): The volume of the underwater hull at any given waterline.
Displacement (W): The weight of water of the displaced volume of the ship, which equals the weight of the ship and cargo.
EVEN KEEL: When a boat is floating on its designed waterline, it is said to be floating on an even keel.
EYE OF THE WIND: The direction from which the wind is blowing.
EYE SPLICE: A permanent loop spliced in the end of a line.
F ...
boot stripe -- a different color strip of paint at the waterline
Boot top A stripe near the waterline.
bow -- forward end of a boat
Bowsprit A short spar extending forward from the bow. Normally used to anchor the forestay.
The ends are short to take advantage of waterline length and beam is carried well aft. The D/L is 165, and that is on the light side for a fully found cruiser of this size. The L/B is 3.45, which puts it right at textbook 'medium' beam.
The forward portion of a boat's hull below the waterline foremast Forward mast of a sailing vessel having two or more masts forepeak The compartment farthest forward in the bow of the boat, often used to store anchor line and chains, ...
topsidesThe hull above the waterline. Also, everything above deck as opposed to below deck. tow ratingMaximum weight a vehicle is rated to tow. trailer tongueForward portion of a trailer where the coupler is mounted.
Removal of the floorboards showed a high rising waterline. The waterline was immediately marked to determine if it was rising.
With regard to the surface of flotation it has been shown that in order that the displacement shall remain constant, consecutive waterlines must intersect on a line passing through the centre of gravity of the waterline or the centre of flotation.
Boot Top - A painted stripe that indicates the waterline.
Bow - The forward part of a boat.
Bowline - Knot used to form a temporary loop in a line
Bow Line - A docking line leading from the bow.
Bowsprit - A short spar extending forward from the bow.
The bottom tip of the transom can be approximately on the waterline, in which case the stern of the vessel is referred to as a "transom stern", ...
Scuppers - Drain holes above the waterline (found in the cockpit area)
Sea Anchor - A long line from the bow to a heavy fabric cone that is slightly submerged. Holds the bow into the wind and reduces drift up to 90%.
Other lengths commonly referred to, though not in these Rules, include waterline length (measure between points where stem and stern enter the water) and length between perpendiculars (measured from the point the stem intersects the design waterline ...
Monohull yachts are typically fitted with a fixed keel or a centerboard (adjustable keel) below the waterline to counterbalance the overturning force of wind on the vessel's sails.
A painted line on the side of a boat at the waterline. The color usually changes above and below the waterline as the boat is painted with special antifouling paint below the waterline.
painter ...
On a calm morning I dived with the end of a fabric tape measure and held it at the lowest point of the keel, while Magali recorded the measurement at the waterline.
A painted stripe that indicates the waterline.
bosun
Also boatswain, bos'n, bo's'n, and bo'sun, all of which are pronounced bosun. A crew member responsible for keeping the hull, rigging and sails in repair.
Draft - The vertical distance from the waterline to the lowest point of the hull or attachments, such as the tip of a propeller, which determines the minimum depth of water in which a vessel will float.
E ...
The draft of a vessel is the vertical distance between the waterline and the underside of the keel of the vessel.
Draft - how deep a boat settles in the water, the depth from the waterline to the bottom of her hull. "She's shallow on the draft" = a ship that can safely sail shallow water. A ship's draft will change if she takes on or lets off heavy cargo.
Boot top A band of paint at the waterline between 'wind and water' .
Bower anchor Main anchor carried forward in a vessel.
Bow Forward part of vessel.
With or without a bowsprit, if the mast is set well aft, abaft 40 percent of the waterline length, and the boat carries two or more headsails, she is a cutter. Confusion arises when a boat has her mast located forward but sets several headsails.
bridge clearance
Distance from waterline to a boat's highest point.
bulkhead
Transverse wall in a boat that usually bears weight and supplies hull support.
A blade attached vertically to the hull that extends below the waterline to keep the boat from skidding during a turn.
Slat
An aerodynamic device mounted on or just forward of the ram wing to create a slot effect.
Draft
1) The depth of a boat, measured from the deepest point to the waterline. The water must be at least this depth, or the boat will run aground. 2) A term describing the amount of curvature designed into a sail.
Boot Top: A painted line that indicates the designed waterline.
Bow: Front end of the boat.
Broad Reach: Sailing so that the wind is behind the beam. (See Point of Sail ) ...
DRAFT (DFT) The depth of a ship in the water. The vertical distance between the waterline and the keel, in the U.S. expressed in feet, elsewhere in meters.
DRY CARGO SHIP Vessel which carriers all merchandise, excluding liquid in bulk ...
Cutter. One mast, stepped at a point about two-fifths of the waterline length from the bow.
Yawl. Two masts, a tall mainmast and a short mizzenmast stepped behind the rudder post.
When a boat is floating on its designed waterline, it is said to be floating on an even keel.
F
top ...
The sides of a vessel between the waterline and the deck. See Freeboard.
Track
Prospective course for boat to follow.
Monohull yachts are typically fitted with a fixed or adjustable keel below the waterline to counterbalance the overturning force of wind on the vessel's sails.
The devil seam was the most difficult to pay because it was curved and intersected with the straight deck planking. Some sources define the "devil" as the below-the-waterline-seam between the keel and the the adjoining planking.
In sail measurements, the base of the foretriangle. It is measured from the forestay at the stem to the forward side of the mast, horizontally to the waterline.
jack line, jack stay ...
Elena and Westward are about 96 feet on the waterline. The Westward, 338 tons, was designed by Herreshoff to the International Rule, and she was classed 100A1 at Lloyd's, and in 1910, when she appeared in European waters, ...
But because of their design, displacement hulls are restricted in their speed to the square root of their waterline length times 1.34. Therefore, a 64 foot boat can realistically only expect a top end speed of a little over 10 knots.
Boot top: Mark to indicate the waterline
Bottlescrew: A fitting to control the tension on the forestay
Bow: Front edge of a boat
Bow fitting: Fitting to which the jib is attached
Bower anchor: Main anchor of a boat ...
Displacement hull boats have a maximum hull speed based on characteristics such as waterline length, draft, smoothness, etc. To overcome this limitation, planing hulls (speedboats) and hydrofoils rise out of the water at higher speeds.
FREEBOARD - The distance between the statutory deck line and the waterline.
FREIGHT FORWARDER - A person or persons who represents the cargo owner and who arranges shipments for that owner.
 See also: Boat, Hull, Deck, Forward, Sail
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