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Stemming the Tide Controlling Introductions of Nonindigenous Species by Ships' Ballast Water (1996) / Chapter Skim
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GLOSSARY AND CONVERSIONS
Pages 127-136

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From page 127...
... Appropriate conversion factors are listed below. These assume a freshwater specific gravity of 1.000 and a salt water specific gravity of 1.025.
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From page 128...
... For the purposes of this study, the term ballast includes sediment, which is the debris that comes out of suspension in ballast water and accumulates on horizontal surfaces in ballast tanks. Ballast tank.
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From page 129...
... Ballast carried in cargo tanks after a crude oil wash, as contrasted to segregated ballast, which is carried in dedicated tanks. Clingage.
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From page 130...
... Estuary. A partially enclosed coastal embayment where fresh water and sea water meet and mix.
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From page 131...
... that eats wood and can destroy wooden structures underwater. Hatch, hatchway.
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From page 132...
... Loading manual. A shipboard document that defines acceptable ways of loading cargo, stores, and ballast considering drafts, trim, and bending moment.
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From page 133...
... Heavy impact resulting from a vessel's bottom near the bow making sudden contact with the sea surface after having risen above the surface due
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From page 134...
... Storm ballast tank. A compartment, usually a cargo hold, used only occasionally when a vessel needs to achieve a deep ballast condition for safety in heavy weather.
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From page 135...
... Diurnal vertical movement of pelagic organisms in the water column toward the surface at night and down to greater depth during the day.
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Key Terms

  • fresh water
  • cubic meters
  • bending moment
  • vertical plane
  • crude oil

  • sea water
  • shell plating
  • specific gravity
  • waterline measured
  • cubic foot

  • planktonic organisms
  • carry cargo
  • deadweight tonnes
  • ship below
  • looking forward

  • water displaced
  • remain upright
  • mean draft
  • ballast tanks
  • ballast water

  • rotation motion
  • oil carrier
  • loading cargo
  • plane rotation
  • forward draft

  • liquid cargo
  • water ballast
  • upper surface
  • ton equals
  • cargo hold


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