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Glossary
Allision - Contact between a moving vessel and a stationary object. Examples involving a towboat are: a towboat and a dock, a towboat and a moored ship, a towboat and a bridge.
American Waterways Operators (AWO) - A national trade organization promoting tugboat, towboat, and barge industry.
Ballast - Heavy substances loaded on a vessel to improve stability and trimming of a vessel.
Barge - A box-shaped vessel propelled by a towboat used to transport goods on waterways.
Barge tow - One or more barges attached together and propelled by a towboat.
Bitt (Bollard) - A post on a vessel or wharf of which lines are tied to secure a vessel.
Bow - The front end of a vessel.
Boxed end - The end of a barge squared for maximum volume of the hull.
Centreboard - retractable device which can be lifted on a pivot point.
Channel - A portion of a waterway deepened (naturally or artificially) to permit safe navigation of a vessel within certain limits.
Collision - Contact between two moving vessels. Examples involving towboats are: two towboats, a towboat and a tank ship, and a towboat and a personal craft.
Crane Barge - A barge that is used for the transportation of general cargo and also used as a platform for workers that have a crane on the deck.
Daggerboard - A moveable keel that is lifted vertically.
Deck Barge - A barge which is designed to carry cargo and materials on its decks which also serves as a work platform for construction workers.
Detection threshold - The limit to which a sensor can sense or detect an object.
Draft - The depth of a vessel’s keel below the waterline. (Often known as light draft or loaded draft)
Electrode - An electronic conductor used to establish contact with a circuit.
Emission - A substance discharged into the air.
Fleet - A group of vessels operated as on unit.
Galvanize - To coat with rust-resistant zinc.
Inland waters - Canals, lakes, rivers, tributaries, bays, and sounds of a land mass which constitutes a country.
Integrated tow - A tow of box-ended barges raked at the bow, boxed at intermediate connections, and boxed or raked at the stern.
Jumbo (Hopper) barge - A barge which is 195 feet long and 35 feet wide.
Keel - A flat surface built to the bottom of vessel to prevent leeway caused by wind and to keep the boat in an upright position.
Keel line - A line describing the lowest portion of a vessel’s hull.
Kevel (caval) - A steel cleat used on barges for mooring and towing lines.
Lateral Slipping - Movement perpendicular to the intended direction of motion.
Lines - Ropes or cables used a vessel for towing, mooring, and lashing(securing).
Lock - A part of a waterway which lowers and raises the height of a vessel within an enclosed space.
Mixed tow - Various types of barges in one tow.
National Marine Electronic Association (NMEA) - An American regulatory organization which sets the standards to the interface of a marine electronic devices.
Navigable waters - Waterways on which commercial or private vessels are able to operate under their normal mode of navigation.
Pilot - The operator which controls the movement of towboat.
Ping - A single shot of sound waves emitted at an object to obtain its shape and location.
Push knee (tow knee) - A vertical structure installed on a towboat to facilitate the pushing of barges.
River system - A network of waterways, the highest element in the hierarchy of a waterway network.
Shale Barge - A barge used mostly for transporting non-hazardous oilfield waste services and contain a cargo bin within an open hopper type of barge.
Tack - The side of the of the boat where the sail is positioned.
Transducer - An antenna which converts electrical energy into a sound waves and vice versa.
Tow - On or more barges attached together and ready for moving.
Towboat - A vessel primarily used to push barges on waterways, also known as a “pushboat”.
Truss - A rigid framework consisting of horizontal, vertical, and diagonal structures designed to support loads and reinforce a vessel’s hull.
Vertical slice - A front view as if one is viewing an object directly in front the viewer.
Waterway - A body of water wide and deep enough to accommodate commercial vessels. Waterways are in unison a river system.
Wharf - A platform to which a vessel loads and unloads is cargo.
Yacht - A small motor-driven vessel and usually used for pleasure crusing or racing.
American Model Yachting Association
http://www.amya.org/sailmanual/part2.html
Corrosionsource
http://www.corrosionsource.com/handbook/glossary/e_glos.htm
McDonough Marine
http://www.mcdonoughmarine.com/terms.htm
Novatel
http://www.novatel.com/gps/important_gps_terms.html
Puna Ridge Nautical Glossary
http://www.punaridge.org/doc/misc/NauticalGlossary.htm
Doug Scheffler
email correspondence: February 23, 2006
The Transporation Institute Glossary
http://www.trans-inst.org/seawords.htm
US Army Corps of Engineers Navigation Vocabulary
http://www2.mvr.usace.army.mil/umr-iwwsns/index.cfm?fuseaction=home.glossary
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