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| Distance maintained between a vessel and the shore, another vessel, or any object |
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| Angle between the flanges of a frame or other member. (Greater than a right angle=open bevel; less than a right angle=closed. |
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| Curved section between the bottom ends of a ship; recess into which all water drains. |
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| A longitudinal member fitted to the outside of the shell on the bilge strake of plating to prevent excessive rolling of the ship. |
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| Course of plates at the bilge. |
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| A short iron column on the deck to which lines are attached. |
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Definition
| A watertight covering on deck of a ship for a stairway or ladder. |
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| A drawing which shows frame lines in elevation. |
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| A steel arm fastened to a mast or king post to support loads that are being moved. |
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| The curved swelling portion of the ship's hull around the propeller shaft. |
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| The forward end of the ship (usually, the pointed end). |
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| A triangular plate used to connect rigidly two are more parts such as a deck beam to a frame, a frame to a margin plate, etc. |
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| A thick piece of steel in the form of a knee placed across the stem of a ship to strengthen the fore part and unite the bows on each side. |
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| Area from which the ship is controlled by the captain or the officer of the deck. |
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| A steel angle iron enlarged to a bulbous thickening at one end. |
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| Structural steel stiffener consisting of a steel flat bar enlarged to a bulbous thickening at one end. |
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Definition
| Interior walls of a ship which subdivide the interior of a ship into compartments or rooms. |
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| Plating extending above the top deck. |
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Definition
| The joint formed when two parts are placed edge to edge. |
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| A distance from center line; an intersection of moulded surface with a vertical longitudinal plane. |
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Definition
| Vertical planes parallel to the center line of the ship. |
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| Vertical planes parallel to the center line of the ship. |
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Definition
| A plate which overlaps and fastens two pieces butted together. |
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Definition
| A plate which overlaps and fastens two pieces butted together. |
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| Rise of crown of a deck from side to side (athwartship). |
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Definition
| Any of several frames bracketed aft of the transom of a ship and inclined slightly to the fore-and-aft direction. Or, any transverse frame not perpendicular to the fore-and-aft midship line. |
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| A device used by hand or machinery for winding in ropes, cables, etc. |
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| The large opening in a deck which permits the loading of cargo into holds. |
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| The exact center between the two lines. |
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| A bent plate used in minimizing chafing of ropes. |
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Definition
| A compartment in the forward portion of a ship in which anchor chain is stowed. |
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| A pipe for passage of anchor chain from deck to chain locker. |
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Definition
| To cut the sharp edge of a 90 degree corner. To trim to an acute angle. |
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Definition
| A wedge or block of wood, metal, or the like for filling in a space holding an object steady. |
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Definition
| A fitting having two arms or horns around which ropes may be made fast. A clip on the frames of a ship used to hold cargo battens in place. |
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Definition
| A plate or stack extending above the deck at the edges of a hatch or skylight. |
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Definition
| A narrow vacant space between two bulkheads. A double watertight bulkhead. |
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| A flanged band or ring. A welded plate used to close a frame or beam penetration through plating. |
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Definition
| The watertight bulkhead nearest the bow of a ship; forepeak bulkhead. |
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| A part of space marked or partitioned off into a separate section or room such as a baggage compartment. |
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Definition
| Having a series of wrinkles or grooves arranged so as to produce stiffness. |
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| Bulkheads with corrugated plating eliminating the need for many welded stiffeners. |
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Definition
| To taper a hole for a flush rivet or bolt. |
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Definition
| A shaped support for a boat, cast, etc., chock. |
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| A crane used in handling small boats, stores, lifeboats, gear, etc. |
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Definition
| Straight portion of a ship’s side. |
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Definition
| Slant up athwartship of the bottom of a ship from keel to bilge. |
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| The part of a ship that corresponds with the floor of a house. |
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Definition
| The part of a ship that corresponds with the floor of a house. |
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Definition
| Any deck stiffeners running transversely or longitudinally also called stringers (longitudinal), girders, longitudinal frames, etc. |
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Definition
| Any enclosed structure projecting above the weather vessel and, usually, surrounded by exposed deck area on all sides. |
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Definition
| The slope of shipways to provide for launching. |
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Definition
| Holding devices which engage a moveable arm as in fastening doors, etc., aboard ship. |
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Definition
| Provides access through a bulkhead. It may be watertight (WT) to weather decks and structural bulkheads or non-watertight (NWT) to spaces within a watertight area. |
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Definition
| Space or compartments of ship between inner and outer bottoms used for ballast tanks, water, fuel oil, etc. Also known as inner bottom. |
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Definition
| A plate fitted outside or inside of another to give extra strength or stiffness. |
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Definition
| A designed increase of draft toward the stern of a vessel or resistance to the movement of a hull through the water. |
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Definition
| Depth of the lowest point of the ship below surface of water when she is afloat. |
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Definition
| To build or construct; raise. |
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| Balanced, as a ship is floating on its designated waterline and the keel is horizontal. |
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Definition
| A bolt having a ring-shaped head. |
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Definition
| Necessary operations performed on plates or shapes to make them into useable pieces such as to punch out, shear, drill, bend, flange or weld. |
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Definition
| A narrow stiffening plate welded along the edge of any web frame or stiffener. |
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Definition
| Correcting or fairing up a ship’s lines or structural members; assembling the parts of ship so that they will be fair, that is, without kinks, bumps or waves; bringing the rivet holes into alignment. |
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Definition
| A pulley, thimble, etc., used to guide a rope forming part of the rigging of a ship, crane, etc., in such a way as to prevent chafing. |
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| A part of a plate or shape at, or nearly at, right angles to the main part. The turned up edge of a shape that resists bending action. |
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| Vertical transverse plates between inner bottom plating and bottom shell plating. |
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| In line with the length of the ship longitudinally. |
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Definition
| The part of the keel which curves and rises to meet the stem. |
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Definition
| The large compartment or tank at the bow in the lower part of the ship. |
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Definition
| Collision bulkhead; bulkhead nearest bow. |
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Definition
| To form by heating or hammering; beat into shape. |
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Definition
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Definition
| A line perpendicular to the baseline, intersecting at the molded draft and forward end of the vessel. |
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Definition
| Supports for equipment of all types such as engines, boilers, machinery, etc. Usually built out of plate and angle iron. |
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Definition
| The members of the ship’s hull. (See Athwartships Frames and Longitudinal Frames) |
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Definition
| Designates one of the transverse ribs that make up the skeleton of a ship. |
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| The fore and aft distance between adjacent frames. |
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Definition
| A heavy side or continuous frame, made with web plate for extra stiffness. |
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Definition
| The vertical distance from the waterline to the top of the weather deck at the side. |
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Definition
| A light spar suspended from the upper part of the main mast, used to fly the national ensign when the ship is underway. |
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| The area of food preparation on a ship. |
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Definition
| The process of coating metals (especially iron or steel) with zinc. |
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Definition
| An opening in the railing or bulwark of a ship as that into which a gangplank fits or an area of the weather deck of a ship between the side and a deckhouse. |
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Definition
| Caulk or rubber used to seal watertight doors or manholes. |
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Definition
| A fore and aft stiffening member for the deck or bottom shell. |
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Definition
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Definition
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Definition
| Light platform or walkway built up of metal bars used for access to machinery. |
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Definition
| The upper edge of the sides of the ship; the point at which the sides of the ship meet the main deck. |
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Definition
| Provides access through a deck. |
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Definition
| Casting or castings through deck and side of ship at bow for passage of anchor chain. |
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Definition
| The inside of a hull; cargo space. |
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Definition
| The body of the ship including shell plating, framing, decks, bulkheads, keel, and floors. |
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Definition
| A structural shape with cross section resembling the letter I. |
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Definition
| Towards the center line of the ship. |
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Definition
| Plating forming the upper surface of the double bottom. Also called tank top. |
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Definition
| A plated surface of “shell” inside the outer shell plating used as additional protection in case of collision or other accidents. The space between the inner and outer shells is often used as a storage space for liquid ballast or cargo. |
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Definition
| Made in separate parts; between frames, beams, etc. The opposite of continuous. |
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| A small flag usually symbolizing the nationality of the vessel. |
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Definition
| A flagstaff at the bow of a vessel on which a jack is flown. |
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Definition
| The main fore and aft member of a ship’s frame. The keel runs along the bottom connecting the stem and stern and to it are attached the frames of the ship. |
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Definition
| The bottom shell strake on center line of ship. |
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Definition
| Vertical plate used as reinforcement for keel, often called center-keelson. |
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Definition
| A stub mast outward from center line used to carry cargo booms; king posts often serve as ventilators. |
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Definition
| A sharp bend in a plate or shape. |
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Definition
| A plate bent to form a knuckle. |
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Definition
| A fitting aid used to fairing up materials normally in the shape of the letter “L”. |
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Definition
| Lead from one deck level to another. Similar to a stairway in a building. May be vertical or angled. |
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Definition
| To float a newly constructed boat or ship by allowing it to slide down inclined ways into the water, using launch pontoons or graving docks (flooded area). |
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| To place on, along, or under a surface. |
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