Glossary of Marine Terms
E
eatscrap
biological army for eating poop. See EATScrap.
EHL
East of Harvey Lock; used with mileage designations on the Gulf Intracoastal Waterway, Harvey Lock being mile zero.
elastic limit
the greatest stress which a material is capable of developing without a permanent deformation remaining upon complete release of the stress.
electric furnace steel
steel made in any furnace where heat is generated almost always by are. because of relatively high cost, normally only tool steels and other high value steels are made by the electric furnace process.
elongation
the amount of permanent extension in the vicinity of the fracture in the tensile or tension test; usually expressed as a percentage of the original gauge length, such as 25% in 2” or 21% in 8”.
endurance limit
also known as fatigue limits a limiting stress, below which metal will withstand without fracture an indefinitely large number of cycles of stress. if the term is used without qualification, the cycles of stress are usually such as to produce complete reversal of flexural stress. above this limit failure occurs by the generation and growth of cracks until fracture results in the remaining section.
ETA
Estimated Time of Arrival.
ETD
Estimated Time of Departure.
evaporate systems
a device for evaporating the water portion of bilge water. See BilgeVAP.
exclusive economic zone
as defined in OPA section 1001, means the zone established by Presidential Proclamation Numbered 5030, dated March 10, 1983, including the ocean waters of the areas referred to as "eastern special areas" in Article 3(1) of the Agreement between the United States of America and the Union of Soviet Socialist Republics on the Maritime Boundary, signed June 1, 1990.
expansion trunk
a raised enclosure around an opening in the top of a liquid cargo tank which allows for heat expansion of the cargo.
